Answer: The infectious diseases that are caused by protozoa include Chagas diseases, Human African Tripanosomiasis, and Leishmaniasis, among others. Chagas disease is a tropical parasitic disease caused by the Protist, Trypanosoma cruzi which spreads through insects like “kissing bugs”
Explanation:
15. How can molecular clock data help us in the battle against infectious disease?
Meus
Answer:
Molecular clock can be described as a technique which scientists use for determining when two life forms might have diverged based on the mutation rate which occurs in biomolecules.
Molecular clocks can be used against infectious diseases because the infection causing agents such as bacteria or viruses contain DNA and RNA. Mutations constantly arise in these infectious agents at the time of their replication. Molecular clocks can help us to sequence different infections and check how similar and different they are to each other. Based on the similarities and differences we can determine the time of the disease and its treatment.
What product produced by yeast cells during fermentation causes bread to rise?
lactic acid
carbon dioxide
glucose
ethyl alcohol
Answer:
answer is carbon dioxide its correct
Answer:
carbon dioxide
Explanation:
In areas where kelp is abundant, sea urchins can be found. If sea otters live in the same ecosystem as the sea urchins, the equilibrium of the kelp forest can be maintained. Based on the food chain, how is the kelp equilibrium MOST likely maintained?
Answer:
There needs to be enough sea urchins for otters to come and there needs to be enough otters to eat the urchins.
Explanation:
Which aspect of this source should make the reader question its credibility?
A. It is not written by an authority.
B. It is not published in a major city.
C. It was not written recently.
D. It is a peer-reviewed journal.
Answer:
The correct option is A) It is not written by an authority
Explanation:
In the English language, credibility can be described as the quality of an object to be reliable or trusted.
A piece of written work which does not mention the name of the writer may be considered to be not reliable and trustworthy. Hence, the correct option is A.
Other options, like option D, is not correct because a peer- reviewed journal carries authentic information as the work has been rechecked by different people who have expertise on the subject.
Why must meiosis and not mitosis be used to produce gametes?
Final answer:
Meiosis is essential for producing gametes because it halves the number of chromosomes and facilitates genetic diversity, making it distinct from mitosis that produces identical diploid cells for growth and repair.
Explanation:
Meiosis must be used instead of mitosis to produce gametes because meiosis reduces the number of chromosomes by half, creating haploid cells, and introduces genetic variation. During meiosis, homologous chromosomes separate and segregate randomly, producing gametes with unique combinations of chromosomes.
This is essential for sexual reproduction, where two gametes unite to form a new organism with a complete set of chromosomes. Genetic variation is increased through processes such as crossing over during meiosis, contributing to the evolutionary success of sexually reproducing organisms.
Meiosis involves two cell divisions resulting in four unique haploid cells, each with half the DNA content of the parent cell, which is important for preventing the doubling of chromosome number during fertilization.
Contrastingly, mitosis is designed to produce two genetically identical diploid cells for growth and repair, and it retains the full set of chromosomes found in the original cell, which is not suitable for the production of gametes.
Meiosis must be used to produce gametes instead of mitosis because meiosis reduces the chromosome number by half, which is essential for maintaining the consistent chromosome number across generations through sexual reproduction.
In sexually reproducing organisms, diploid organisms produce haploid gametes (sperm and egg cells) that combine during fertilization to form a diploid zygote. If mitosis, which is a process of cell division that results in two genetically identical diploid daughter cells, were used to produce gametes, the chromosome number would double with each generation, leading to an exponential increase in chromosome number, which is not sustainable.
Meiosis, on the other hand, involves two rounds of cell division following a single round of DNA replication, resulting in four haploid cells. This process ensures that each gamete contains half the number of chromosomes of the parent organism. When two gametes fuse during fertilization, the resulting zygote has the correct diploid number of chromosomes, which is characteristic of the species.
Furthermore, meiosis introduces genetic diversity through the processes of crossing over during prophase I and independent assortment of chromosomes during metaphase I. This genetic variation is crucial for the evolution and adaptation of species.
In summary, meiosis is necessary for the production of gametes because it:
1. Reduces the chromosome number by half to maintain a stable chromosome number across generations.
2. Ensures that the zygote formed after fertilization has the correct diploid number of chromosomes.
3. Introduces genetic diversity through crossing over and independent assortment.
Cross a bay stallion with a cream mare. List all offspring phenotypes as a percentage
Answer:
buckskin(The horse has a tan or gold colored coat with black points (mane, tail, and lower legs))palomino(gold coat and white mane and tail, the degree of whiteness can vary from bright white to yellow)smoky black(coat is either black or a few shades lighter than true black)Explanation:
A bay horse is a black-based animal with the agouti gene, which is the modifier that limits the horse’s black color to its points (legs, mane, tail, eartips). The black-based horse can be either homozygous for the extension allele (two copies black – EE) or heterozygous (one copy black, one copy red – Ee). Because black is dominant, an Ee horse will appear black-based.
A horse can carry the agouti gene whether it is black or red (this is why a black horse bred to a chestnut or sorrel horse may produce a bay). It is impossible to tell phenotypically (from looking at the horse) if it is homozygous or heterozygous.
This means that when you cross a cremello (a sorrel/chestnut with two copies of the cream gene) on a bay (black with agouti), you can get buckskin, palomino or smoky black, depending on the horses’ exact gene combination.
references:
wikipedia.comAnswer:
buckskin(The horse has a tan or gold colored coat with black points (mane, tail, and lower legs))
palomino(gold coat and white mane and tail, the degree of whiteness can vary from bright white to yellow)
smoky black(coat is either black or a few shades lighter than true black)
Explanation:
Hermione's possible genotypes are MMss or MM'ss. What are possible genotypes of Hermione's parents who are muggles?
MM'Ss or MMSs are the possible genotype of Hermione's parents.
Explanation:
Muggles have a gene for magic but not expressed in them, S represents silencing, s is no silencing).
If Hermione's genotype is MMss or MM'ss
then Hermione's parents would have Ss (but did not express S in Hermione and parents were heterozygous)
Hermione's parents could have M' M alleles but M' could or could not have appear in this case
so parents genotype are
MM'Ss or MMSs
It can be checked by crossing the possible genotype of parents
M M' s S
M MM MM' s ss Ss thus Hermione has this possible combination
M MM MM' S Ss SS as MMss , MM'ss
What is the name of the process where DNA is
duplicated to create two strands of DNA?
This process is called DNA Replication. Replication is essential/needed with DNA and when the cell divides into two parts, the two daughter cells have to have the same genetic information. Replication is needed for this genetic information to be copied.
- CloutAnswers
The duplication of DNA to produce two identical DNA strands is known as semiconservative DNA replication, where each new molecule contains one parental strand and one new strand.
Explanation:The process where DNA is duplicated to create two strands of DNA is known as DNA replication. This is a semiconservative process, which means one strand from the original DNA molecule is conserved, or kept the same, in each of the two new DNA molecules. During semiconservative replication, an enzyme called DNA helicase breaks the hydrogen bonds between complementary bases, unfolding the double helix. Then, DNA polymerase reads the existing strands and adds new nucleotides to form complementary strands. The resulting two daughter DNA molecules, therefore, consist of one old parental strand and one new strand, preserving half of the original DNA molecule in each.
This complex process occurs during the synthesis phase of the eukaryotic cell cycle, ensuring that each new cell receives an exact copy of the DNA. DNA replication is also considered an anabolic process because it involves the synthesis of new molecules.
Language: English Español
MEIOSIS
Meiotic
Division 1
DNA
Replication
and Recombination
Cell
Division 1
Meiotic
Division 2
00:00:43
Cell
Division 2
OD ODS
ÓÓÓÓ
At the end of meiosis II, how does the DNA in each of the four new cells compare to the DNA from the original cell?
Answer:
Meiosis is known as the reduction division. It produces four haploid (n) gametes containing only one chromatid from each chromosome. Therefore, at the end of meiosis 2, the number of chromosomes is half that of the original cell.
Explanation:
Following is a summary of the events of meiosis:
Interphase:
Prepares the cell for division. Duplication of DNA, duplication of centrioles occurs and the cell grows in size. At this stage the cell is diploid (2n).
Prophase 1:
First stage of Meiosis 1.The centrioles move to the poles of the cell, the nuclear membrane disintegrates, homologous chromosomes pair up (in the form of tetrad), form a chiasmata and then exchange segments of chromosomes with each other. This process is called crossing over.
Metaphase 1:
Involves the arrangement of the crossed over, homologous chromosomes on the metaphase plate which is sort of like a web of spindle fibers that originates from the centrioles.
Anaphase 1:
The tetrads arranged on the metaphase plate are pulled apart by the spindle fibers. This is the result of tension that build up in the spindle fibers as they grow towards opposite poles.
Telophase 1:
The last stage of meiosis 1. Involves the arrival of the chromosomes at the poles, the nuclear membrane starts to form and the chromosomes start decondensing. Telophase 1 yields 2 daughter cells with half the number of chromosomes as that in the parent cell.
Meiosis 2:
Meiosis 2 is exactly similar to mitosis. The only difference is that the haploid cells entering meiosis 2 do not duplicate their DNA. Meiosis 2 just involves the separation of the sister chromatids of homologous chromosomes.
As mentioned above, interphase does not occur before meiosis 2.
Prophase 2 involves the disintegration of nuclear envelope, centrosomes start moving to the poles.
Metaphase 2 arranges the chromosomes on metaphase plate.
Anaphase 2 separates the sister chromatids from the chromosomes.
Telophase 2 develops the nuclear envelope and separates the nuclei of the daughter cells into 2. Nuclear division id followed by cytokinesis (division of cytoplasm). Telophase 2 result sin 4 haploid daughter cells with one chromatid from each chromosome.
4 While surveying his apple trees, a farmer discovers a particular tree that produces apples with perfect size, color, and flavor. To reproduce this plant, he removes a twig from the tree and attaches it to the stem and root system of a growing apple tree in a process called grafting. The tree will continue to grow and will later produce apples. Why does he use this method instead of planting an apple seed from the tree with ideal apples? A.
The twig contains the genetic material of the parent tree and will eventually produce identical apples.
B.
The apple seed will grow into a tree that is not identical to the parent tree.
C.
The apple seed contains a mixture of genetic material from two trees.
D.
all of these This is on study island
Answer:
I think it is C
Explanation:
Hope it helps
Which of the following is NOT true regarding organisms in the three domains of life?
Group of answer choices:
A: Organisms of all domains pass on genetic information.
B: Organisms of all domains have a nucleus.
C: Organisms in all domains are made up of cells.
D: Organisms of all domains have cells walls
Answer:
b is false
Explanation:
not all living things have a nucleus
The incorrect statement is that 'Organisms of all domains have a nucleus.' Only eukaryotes, one of the three domains of life, have a nucleus. Bacteria and archaea, the other two domains, do not have a nucleus. However, all organisms pass on genetic information, are made of cells, and have cell walls.
Explanation:The statement which is not true regarding the organisms in the three domains of life is B: 'Organisms of all domains have a nucleus.' This is incorrect because only eukaryotes, one of the three domains of life, have a nucleus in their cells. Both bacteria and archaea, the other two domains, lack a nucleus. Their genetic information is instead contained within an area of the cell called the nucleoid.
Regarding statements A, C, and D, they are all true. All organisms in every domain do indeed pass on genetic information. For example, they do this through processes like cell division and reproduction. All organisms are also made up of one or more cells, and organisms from all domains have cells walls, though the composition of these cell walls can vary greatly between the domains.
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In humans, dimples are dominant to no dimples and long eyelashes are dominant to short. A man with no dimples and short eyelashes mates with a woman who is heterozygous for both traits. Determine the phenotypic ratio of the offspring. Also determine what percentage of their offspring will have the same genotype as their mother.
The phenotype ratio of the offspring is 1:1:1:1
25% progeny will have the genotype similar to their mother. DdLl
Explanation:
Dimples are dominant = D long eyelashes are dominant = L
no dimples are recessive = d short eyelashes are recessive = l
The genotype of the man with no dimples and short eyelashes
ddll
The genotype of the woman who is heterozygous for both the traits
DdLl
From the Punnet square:
dl dl dl dl
Dl Ddll Ddll Ddll Ddll
DL DdLl DdLl DdLl DdLl
dL ddLl ddLl ddLl ddLl
dl ddll ddll ddll ddll
The genotype ratio is= 1:1:1:1
Phenotype ratio= 1:1:1:1
( from the results 4 progenies of each genotype combination and phenotype traits as ( Ddll dimple-short eyelashes, DdLl Dimples and long eyelashes, ddLl no dimples- long eyelashes, ddll no dimples short eyelashes.)
The mother is heterozygous for both the characters so 25% of the progeny will have the same genotype as their mother.
33.33% of their offspring will have the same genotype as their mother (DdLl).
Step 1
To solve this, let's use Punnett squares to determine the phenotypic ratio and then calculate the percentage of offspring with the same genotype as the mother.
The man's genotype: no dimples (dd) and short eyelashes (ll).
The woman's genotype: heterozygous for both traits (DdLl).
Step 2
First, let's create a Punnett square:
Dd Dd
----------------
Ll | DDLl | DdLl
Ll | DDLl | DdLl
Step 3
Now, let's determine the phenotypic ratio:
- Dimples (D) and long eyelashes (L): 2 (DDLL)
- Dimples (D) and short eyelashes (l): 4 (DDLl)
- No dimples (d) and long eyelashes (L): 2 (DdLL)
- No dimples (d) and short eyelashes (l): 4 (DdLl)
So, the phenotypic ratio is 2:4:2:4, which simplifies to 1:2:1:2.
Step 4
Now, let's calculate the percentage of offspring with the same genotype as the mother (DdLl):
The total number of offspring is 2 + 4 + 2 + 4 = 12.
The number of offspring with the genotype DdLl is 4.
Percentage = (Number of offspring with DdLl genotype / Total number of offspring) * 100
Percentage = (4 / 12) * 100
Percentage = 33.33%
So, 33.33% of their offspring will have the same genotype as their mother (DdLl).
Which measures the amount of kinetic energy of the particles that make up
a substance?
OA) mass
OB) volume
OC) distance
OD) temperature
Answer
Tempature
Explanation:
Answer: D) temperature
Explanation: Kinetic energy is the energy of a moving particle or body. When the temperature of a substance is increased, the particles of the substances gain kinetic energy, and when the temperature decreases the kinetic energy decreases. When the temperature of a substance is zero, the kinetic energy of the particles is zero. For example, when heat is applied to water, its temperature increases, and the kinetic energy of the particles begin to increase. If the heat persists, the temperature continues to increase and kinetic energy of the water particles continues to increase and the particles begin to move in a random manner, colliding with one another and the walls of their container until a point where the water begins to boil. When the heat is removed, the temperature decreases and the kinetic energy of the water particles decreases until the water cools.
Explain why a rock pocket mouse color influence its overall fitness. Remember that "fitness" is defined by an organisms ability to survive and produce offspring in its environment
Answer:
The rock pocket mice rely on their fur color for camouflage. So, on the tan sand more light colored mice will survive because they blend in and on the dark lava rock more dark colored mice will survive and the allele for dark fur will be passed on to their offspring
Owing to the definition of fitness as being an organism's ability to survive in an environment, the fact that the color of pocket mouse aligns or blends with the color of their niche protects them from predation.
Rock pocket mouse lives in environments which conceals their presence. This is achieved by staying in areas where their fur color blends with the habitat. Hence, concealing their existence or presence. Light colored pocket mouse lives on light colored rocks while dark colored species lives on dark lavas. This keeps them safe from predators.Therefore, pocket mouse select their living area based on their color in other to conceal their presence and keep them safe, hence, increasing their fitness level.
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the diagram above shows a process that can occur during meiosis
the moat likely result of this process is...
A.) a new combination of inherited traits that can appear in The Offspring
B.) A increase in the chromosome number of the organism in which this process occurs
c.) an inability to pass either of these chromosomes onto The Offspring
d.)A loss of genetic information that will produce a genetic disorder in The Offspring.
Answer:
The correct option is A) a new combination of inherited traits that can appear in the offspring
Explanation:
Meiosis can be described as a type of cell division which occurs in the sex cells only. This kind of division causes the chromosome number to be reduced to half of that of the parent cell. This happens so that the chromosome number can be maintained in a fertilized zygote.
The phenomenon shown in the picture is of crossing over. Crossing over is the process by which homologous chromosomes exchange DNA segments so that genetic variation can occur among the parents and offspring.
The correct option is A) a new combination of inherited traits that can appear in the offspring
The following information should be considered:
Meiosis could be represent the cell division type that arise in the sex cells only. It caused the chromosome number for decreasing to half of the parent cell. The chromosome number could be maintained in the fertilized zygote.
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what type of commensal relationship is remora fish and shark ?
Answer:
A Remora fish would attach itself to a shark and use the shark for transportation and eat all the food that is left over from the shark. The symbiosis relationship between them is a commensalism relationship because the remora is getting its food and the shark gets no benefit.
Final answer:
The remora fish and the shark have a commensal relationship where the remora benefits from food and protection while the shark is unaffected. This is an example of commensalism, a type of symbiotic relationship.
Explanation:
The relationship between the remora fish and the shark is an example of commensalism. In this symbiotic relationship, the remora, often known as a pilot fish, benefits by attaching itself to the shark, feeding on the leftovers from the shark's meals and gaining protection while traveling through the ocean. On the other hand, the shark neither benefits from nor is harmed by the presence of the remora fish.
Commensalism is different from mutualism, where both species involved receive benefits, such as the relationship between goby fish and shrimp. It's also distinct from parasitism, where one organism benefits at the expense of the other. Commensal relationships may involve one organism using another for transportation or housing without any negative impact.
2. Which of the following is a heterotroph?
a. Dirt
b. Pumpkin
c. Cat
d. Flower
Answer: c) Cat
Explanation:
A heterotroph is an organism which depends on plants or other animals for food because it cannot manufacture its own food. All animals are heterotrophs while green plants are autotrophs because they can manufacture their own food using chlorophyll in a process known as photosynthesis. Heterotrophs feed on complex organic food materials.
How did people acquired immunity to a disease before the development of vaccines
Answer:
Exposure to the disease
Explanation:
Before vaccines, the only way to develop immunity to a disease was to be exposed to the disease-causing pathogen without being harmed by it. A good example of this is smallpox, which was also the first vaccine developed. It was noticed that milk maids weren't catching and dying from small pox like everyone else, because they had been exposed to cowpox. This premise was used to create the first vaccine.
Vaccines give you immunity by injecting you with a small amount of a (usually inactive) pathogen. inside your body. This means your immune system produces antibodies against it. Similar to what happened with the milkmaids.
an equation that shows how an objects acceleration relates to its mass
Answer:
the wieght
Explanation:
Answer:
a = f (net) / m
Explanation:
a = f (net) / m, where a = acceleration, f (net) = the net force acting on the object, m = the mass of the object.
Identify one abiotic factor in the diagram that functions as a limiting factor for the autotrophs in this ecosystem and explain why it would be considered a limiting factor
Abiotic factors in an ecosystem comprise the non-living components, such as sunlight, that might limit the growth of autotrophs by restricting the capabilities for photosynthesis. Autotrophs are self-sustaining organisms that need sunlight to manufacture their own food. Insufficient sunlight, therefore, becomes a limiting factor for these organisms and affects the entire ecosystem.
Explanation:In the context of an ecosystem, an abiotic factor refers to all of the non-living physical and chemical factors that influence the distribution and abundance of organisms. A limiting abiotic factor for autotrophs (organisms that can produce their own food from inorganic substances) in this ecosystem could be sunlight. Sunlight can be considered a limiting factor because it is necessary for photosynthesis, the process by which autotrophs produce their own food. If the sunlight is insufficient, it limits the growth and productivity of autotrophs, thereby influencing the entire ecosystem.
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Final answer:
Sunlight is an abiotic limiting factor for autotrophs in an ecosystem because it is essential for photosynthesis, affecting their growth and the entire food chain.
Explanation:
One abiotic factor that functions as a limiting factor for the autotrophs in an ecosystem is sunlight. Sunlight is considered a limiting factor because plants and other photosynthetic organisms require it for photosynthesis, which is fundamental to their energy production and growth. Without sufficient sunlight, these autotrophs cannot produce enough energy to sustain their metabolic processes, grow, and reproduce. This limitation can affect the entire food chain since autotrophs serve as the primary producers and form the base of the ecosystem's energy pyramid.
which activity might a scientist do as part of the scientific process? apex
A.) Make a testable hypothesis
B.) Hide experimental data
C.) Make unsupported claims
D.) Answer ethical questions
Percentage of
Trees Remaining
2010
2015
2020
2025
2030
2035
Year
What would a graph of oxygen production look like for this forested area?
O
A. Aline that is increasing
O
B. A line that is decreasing
O
C. A line that is leveling out
O
D. A line that is slowly rising
Answer:
Percentage of
Trees Remaining
2010
2015
2020
2025
2030
2035
Year
What would a graph of oxygen production look like for this forested area?
A line that is increasing
Explanation:
It is an established fact by scientist that availability of trees increases oxygen rate in an environment. From the above question, the increase in number of trees as allotted by increase in years reflect an increase in oxygen available. Trees makes use of carbondioxide exhale by humans while humans make use of oxygen exhale by trees.
According to reports by National Public Radio, sales of products labeled Non-GMO have more than doubled over the past two years, jumping from $7 billion to $16 billion. At the same time, organic foods have also been gaining in popularity, though at a much slower rate.
What do you know about GMO's?
A) All organic foods contain GMO ingredients, as set forth in USDA guidelines.
B) 85% of the U.S. corn is GMO; modified to be resistant to herbicides.
C)The U.S. does not require that GMO foods be labelled as such.
D) Example of GMO: cross-pollinating plants for a desired trait.
E) Technology now allows us to transfer genes between organisms of different species and even kingdoms.
F) Extensive testing has been conducted on GMO-foods to ensure that there will be no adverse allergic reactions or health risks.
Answer:
B,C,E
Explanation:
Answer:
B) 85% of the U.S. corn is GMO; modified to be resistant to herbicides
c)The U.S. does not require that GMO foods be labelled as such.
E)Technology now allows us to transfer genes between organisms of different species and even kingdoms.
Explanation:
A biologist conducted an experiment to determine the rate at which DNA mutations occur. The biologist was careful to record the steps of her experiment, as well as her observations and results. What should the biologist do next?
A.
Report her results in a scientific journal.
B.
Ask the local newspaper to publish her results.
C.
Hide her results from other scientists so that they won't steal her idea.
D.
Come up with a new hypothesis that she can test.
A. Report her results in a scientific journal - should be the action that the biologist should do next
Explanation:
Once conducting an experiment a biologist or a scientist should record the values, observations and inferences correctly because science requires construction of all data, facts, values, explanations, observations, and predictions that are observed and evidenced.
Research findings are published in a scientific journal because the research findings are stored, saved and can easily be referred for future reference.
This will be evaluated by other academicians and scientists and can be compared with past results to value the achievements made by the current researcher. This will also give way for future prospects in the research.
This will add academic credibility to both the biologist and her institute. When presented in a literature form, this can be accessed by scientists, academicians, peers and others to refer and cite valuable information in their research.
Others can use the findings to help with advancements of the research in the same topic. It gives an immense feeling for the biologist or any researcher to see his/her work being published on a recognized journal and will encourage to work more.
An 1815 volcanic eruption in Indonesia was followed by a three-year famine
around the world. How was the volcano linked to the famine?
O
A. The eruption's ash and gas significantly dimmed the sun.
B. The eruption preserved an ancient human civilization.
sh
O
C. The eruption contributed to global warming.
O
D. The eruption's heat and energy killed all the farmers in its path.
O
E. The eruption killed many local people.
Answer:
C. The eruption contributed to global warming.
Explanation:
Volcanic eruption can enormously contribute to the factors that initiate global warming through release of harmful gases to the atmosphere. These gases collectively form a blanket-like cover in the atmosphere that prevent heat escape to the atmosphere from the earth. Result is accumulation of heat on earth and not only leads to extreme temperatures but also harsh climatic conditions that devastate farming activities. When farming is compromised, hunger is inevitable.
we cannot see properly when we come out in dark room from a bright place . why
Answer:
Because it takes some time to adapt to the new level of light in the environment
Explanation:
The pupil of our eye functions to control the light that enters our eye by contracting or relaxing.When we are in bright place, the pupil contracts to limit the light in our eye lens. When we move to a dark room, the pupil takes some time to expand and due to this only limited amount of light enters our eye lens which might not be enough to see properly in the dark place. Unlike human beings some animals have more effective pupil with which they can stalk their prey in low light too.Our inability to see when moving from a bright place to a dark room is due to the time it takes for our eyes to adjust from cone to rod activity, which is better suited for low-light conditions. This adjustment process leads to a temporary period of impaired vision known as dark adaptation.
We cannot see properly when we come out of a bright room into a dark one because our eyes need time to adjust to the lower levels of light. In a bright environment, our vision is dominated by cone activity, providing us with color vision and sharpness of sight. When we move into a darker environment, our eyes gradually switch to relying more on rod activity.
Rods are more sensitive to light but provide no color information and are more effective in low light. The transition from a well-lit area where cones are active, into a dark area where rods become more active, takes time, causing a temporary inability to see in the dark. This also explains why animals like owls and bats can see in what appears to be pitch darkness to us; their eyes are either more sensitive to light or adapted to different wavelengths, allowing them to see with less light than humans require.
Ultimately, what is experienced as 'darkness' is a limitation within our own visual system rather than a complete absence of light. With time, our eyes adapt, and we begin to see better in the dark theater or room, though it may never appear as bright to us as the outside because our perception of brightness is not directly proportional to the number of photons received.
An octopus reproduces only once in its life, but it may have more than 100,000 offspring, depending on the species. Certain species of penguin, by contrast, have only one chick at a time. If some species can reproduce as rapidly as the octopus (100,000 offspring every 3 or 4 years), how is it possible that a species that has only one young at a time is equally successful?
A.
Having a large number of offspring assures that at least some of them will escape being killed by predators.
B.
An octopus only reproduces one time, but penguins may reproduce between 4 and 12 times in their lives.
C.
Baby penguins are left to fend for themselves from the time they hatch, so they quickly become self-sufficient.
D.
The success of a species depends on the number of offspring that survive long enough to reproduce.
Answer:B
Explanation:
An octopus only reproduces one time, but penguins may reproduce between 4 and 12 times in their lives.
C.
Baby penguins are left to fend for themselves from the time they hatch, so they quickly become self-sufficient.
D.
The success of a species depends on the number of offspring that survive long enough to reproduce.
Answer:
D
Explanation:
I got this exact same question on Study Island.
"The success of a species depends on the number of offspring that survive long enough to reproduce, not just the number of offspring produced at a time or even in a lifetime. A penguin who has only one young can devote a lot of time, attention, and care to it, greatly increasing its chances of surviving long enough for it, too, to reproduce. An octopus, on the other hand, usually dies shortly after reproducing. A young octopus has no parent to protect or teach it, so the vast majority of octopi do not survive long enough to reproduce." -Study Island
Hope this helps :D
Lack of interaction with social and cultural environments transforms people into members of society.
Please select the best answer from the choices provided
OT
OF
Lack of interaction with social and cultural environments transforms people into members of society is a false statement.
Explanation:
Socialization which involves social interaction of people with each other will help transform themselves into active members of society.
The way we interact and project ourselves to our friends, relatives, parents, teachers, colleagues, neighbors and others grades our socialization process.
Knowing about the social and cultural environment of society and interacting with others based on that knowledge will help an individual to interact closely with other people and hence will transform to being a member of that society.
People who are less or unsocialized, self-interested shows a lack of interest in knowing the social and cultural environment of others and hence would not be successful in socializing.
Socialization process helps to change the status of an individual from “I” to “me”. The “me” part understands the values, expectations, and rules of a society and hence interacts socially to become a member of society.
Which state of a dead body is caused by the lack of adenosine triphosphate (ATP) to the muscles?
Answer:
the elipsophre state
Explanation:
this is when the muscles and skine start to spoil
Lucy plans to buy a refrigerator. She wants a large model so it has enough space for all the food she needs to store so that she takes fewer trips to the grocery store. Lucy also wants a refrigerator that does not use too much electricity. However, when she goes to the appliance store, she finds that larger refrigerators use more energy. Which statement best explains why there is NO perfect solution for Lucy's
a. Lucy cannot choose the values of the variables.
b. The two variables have to be calculated.
c. There is a trade-off between the two variables.
d. Lucy does not know which variable is more important.
Answer:
D) there is a trade of between the two variables
Explanation:
this makes more sense