Answer: B. The living world
Explanation: Generally speaking, biologists study humans, animals, plants and bacteria to gain a better understanding of how the body and nature works
Answer:
The answer is B.
Explanation:
A biologist is a scientist who studies life, specifically organisms and their relationship to their environment. Generally speaking, biologists study humans, animals, plants and bacteria to gain a better understanding of how the body and nature works, and how external factors may influence each organism.
:) How does reducing heart rate during a dive enable animals to stay underwater longer?
Reducing heart rate during a dive helps animals stay underwater longer by conserving oxygen and redirecting blood flow to vital organs.
Explanation:The reduction in heart rate during a dive enables animals to stay underwater longer as part of the diving reflex. This reflex diverts blood to essential organs while submerged. When the heart rate slows down, it conserves oxygen and directs more blood flow to critical organs, helping the animal to stay submerged for extended periods.
For example, in marine mammals like whales and seals, the diving reflex reduces heart rate and shunts blood preferentially to the brain and other vital organs, allowing them to conserve oxygen and stay underwater for extended periods.
By reducing heart rate, animals can stay underwater longer by minimizing oxygen consumption and redirecting blood flow to important organs.
Put the steps of dna replication in order:
Helicase unwinds the DNA
DNA polymerase binds follows the leading strand
Hydrogen bonds form between bases
Two strands of DNA are made
Answer:
Helicase unwinds the DNA, DNA polymerase binds...., Hydrogen bonds...., Two strands....
Explanation:
It i salready in order. Some pictures on Google may help with this too.
I NEED HELP WITH THIS QUESTION ITS DUE TOMORROW
I CANT DO QUESTION 14 IM STUCK ON IT
CAN SOMEONE HELP ME PLEASE
Is 14 the one down at bottom? If so, it would be a cell wall and chloroplasts; only plant cells have those. I hope this helped!
______ act like underwater windmills, except the rotors are
driven by moving water instead of air.
A. tidal fence
B. tidal turbine
C. tidal barrage
Answer: tidal turbine
Explanation:
Answer:
B
Explanation:
For most tidal energy generators, turbines are placed in tidal streams. A tidal stream is a fast-flowing body of water created by tides. A turbine is a machine that takes energy from a flow of fluid. That fluid can be air (wind) or liquid (water). Because water is much more dense than air, tidal energy is more powerful than wind energy. Unlike wind, tides are predictable and stable. Where tidal generators are used, they produce a steady, reliable stream of electricity.
Hope this was helpful
during which stage of the cell cycle does DNA replication occur?
Answer:
At mid-interphase
Explanation:
The DNA replicates during the S phase of interphase, after G1 and before G2, the two growth phases. Throughout interphase, the DNA is extended, and free nucleotides have access to the strands.
During division (M phase) the DNA is condensed, so that the chromosomes are short, compact, and easily moved to the poles of the spindle.
DNA replication takes place during the S phase or synthesis phase of the cell cycle, which is part of interphase. This precedes the mitotic phase where actual cell division occurs. This process ensures each daughter cell receives an identical copy of DNA.
Explanation:The process of DNA replication occurs during a specific phase of the cell cycle known as the S phase, or synthesis phase. During this stage, DNA replication can proceed, resulting in the formation of identical pairs of DNA molecules, or sister chromatids, that are essential for successful cell division. The S phase occurs as part of interphase, prior to the cell's entry into the mitotic phase where actual cell division takes place. The cell cycle is a series of carefully timed and regulated stages that involve cell growth, DNA replication, and cell division, leading to the formation of two new daughter cells, each with an identical copy of the DNA.
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You have been assigned to write an essay about a time when you felt under pressure. Which would make the most appropriate introductory sentence to this essay?
A) Some people handle pressure very well, while others don't.
B) People face many pressure-filled situations in their lifetimes.
C) Feeling under pressure has certain notable effects on the human body.
D) The time I felt most under pressure in my life was when I was in my senior year of high school.
D) The time I felt most under pressure in my life was when I was in my senior year of high school.
This introductory sentence directly introduces the main theme of the essay and provides a clear focus on the specific time and context in which the pressure was experienced.
The best introductory sentence for an essay on a pressure-filled time is one that specifies the event and its impact, such as discussing pressure during senior year of high school, which creates a strong hook and context for the narrative. Therefore, the correct answer is D.
Explanation:The most appropriate introductory sentence to an essay about a time when you felt under pressure would likely be D) The time I felt most under pressure in my life was when I was in my senior year of high school. This sentence immediately informs the reader about the specific event the essay will describe and sets the stage for a personal narrative. As it introduces a clear and concrete example, it effectively hooks the reader and provides a smooth transition into the essay's body where the specific challenges and emotions related to the experience can be detailed.
are Chromosomes structures are always present in a cell.
Answer:
No.
Explanation:
Chromosomes are visible only in reproduction otherwise they are in thread like structure called chromatin. Almost all nucleated cells contain chromatin or chromosomes while non-nucleated cells don't have chromosomes because chromosomes are always present in nucleus. Non-Nucleated cells include Red Blood Cells and thrombocytes.
Final answer:
No. Chromosomes are only coiled and visible during cell division; otherwise, they exist as chromatin, an uncoiled DNA-protein complex, within the nucleus.
Explanation:
Chromosomes are structures found within the nucleus of a cell and are comprised of DNA, the hereditary material, and proteins. These structures are not always present in their familiar condensed form; they are visible and distinguishable from one another only during cell division when the DNA coils into thick structures. In eukaryotes like humans, chromosomes are linear, and each species has a specific number of chromosomes.For instance, human cells contain 46 chromosomes. At other times, during phases like growth and maintenance, this DNA-protein complex exists as chromatin, which resembles unwound strands rather than distinct chromosomes.The coiled structure of chromosomes during cell division ensures the proper segregation of genetic material to daughter cells. Chromatin is the less condensed form of DNA that serves as a material from which chromosomes form.In summary, while chromosomes in their characteristic coiled form occur only during cell division, chromatin is always present within the nucleus, representing the uncoiled state of the chromosome's DNA-protein complex.What is the sign finance of an AUG codon
Answer:
The significance of AUG codon is that it signals the ribosome to start translation.
Explanation: Codons are three nucleotides sequence found on the mRNA strand that codes for a specific amino acid. There are 64 codons, one is the start codon, three are stop codons while 61 codes for twenty amino acids. AUG is the start codon which signals the ribosome to start protein synthesis. The AUG codon also codes for amino acid methionine.
What Chemical energy is produced as a result of photosynthesis
Answer:
Glucose is a form of chemical energy which is produced in the plants during the process of photosynthesis.
Explanation: Photosynthesis is a process in which light energy is converted into chemical energy. In this process, carbondioxode enters through small opening called stomata and water is absorbed by the plant from the soil in the presence of sunlight produces oxygen and glucose. Oxygen is released in the atmosphere and glucose is stored in different parts of plant body.
How does embryo of vertebrates tell us that we have a common ancestor
Answer: Embryos are basically the first stages of new life when it comes to animals and humans. When a human Embryo was compared to a fish embroyo, both had gills. However, the gills on the human embryo disappear before the birth process. We can use this to find common ancestors in animals and humans by finding the similarities/differences between the embryos.
Explanation:
5. What is an advantage of building a model of DNA? What are two limitations of the DNA model
you created? What properties of DNA cannot be demonstrated using this model?
An advantage of building a model of DNA is that DNA is one of a kind of structure that empowers the atom to duplicate itself through the process of cell division.
What are two limitations of the DNA model you created?The two limitations of the DNA model that you created are as follows:
DNA polymerase cannot start amalgamation on its possess.DNA polymerase is restricted by the reality that it cannot include nucleotides in a 3' to 5' course.The properties of DNA that cannot be demonstrated using this model may be determined by the fact that it is one of a kind structure that facilitates the atom to duplicate itself during the methodology of cell division.
The Molecular models of DNA structures are representations of the atomic geometry and topology of deoxyribonucleic corrosive (DNA). It is a genetic particle that transmits genetic information from parents to their offspring.
Therefore, DNA is the genetic fabric of people and nearly all other living beings.
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Which species will most likely have the most genetic diversity among their offspring
Answer:
Species that reproduce sexually have greater genetic diversity than species that reproduce asexually.
Explanation:
Species that reproduce sexually and have a wide variety of forms within their genus are most likely to exhibit the highest genetic diversity among their offspring, proving crucial for adaptation and evolution.
Among different species, those with a higher variety of forms and ecological roles are likely to have the most genetic diversity among their offspring.
This diversity is crucial for adaptation and the potential for evolution, emphasizing the importance of sexual reproduction in contributing to genetic variability.
Species that undergo sexual reproduction, where the genetic material of two individuals combines, tend to produce offspring with significant genetic differences from their parents.
This variability is a key asset in adapting to changing environments and overcoming challenges.
Therefore, among various species, those that reproduce sexually and have a wide range of types within a genus will likely exhibit the highest genetic diversity among their offspring.
The 6-kingdom system of classification divides the former kingdom Monera into two kingdoms, Eubacteria and
Explanation:
The 6-kingdom system of classification divides the former kingdom Monera into two kingdoms, Eubacteria and
Archaebacteria
Answer: Archaebacteria . Is the answer period
Explanation:
Explain why the saprotrophs and detritivores are placed to one side of the pyramid
Answer:
The saprotrophs and detritivores are placed to one side of the pyramid because they are decomposers which feed on dead bodies of all the living organisms which are present in the trophic levels i. e. producers, primary consumers, secondary consumers and tertiary consumers etc. When they feed on dead bodies, they released nutrients which are used by the plants.
What is immunity?
That is my question
Answer:
In biology, immunity is the balanced state of multicellular organisms having adequate biological defenses to fight infection, disease, or other unwanted biological invasion, while having adequate tolerance to avoid allergy, and autoimmune diseases.
1. In the marine food web shown, which of the
following organisms does not feed on silversides?
O
A. Arctic cod
OB. sea duck
C. ringed seal
O
D. beluga whale
Answer:
C. Ringed seal
Explanation:
A marine food web illustrates how energy is passed from one organism (level) to another in this aquatic rich ecosystem.
In the following food web, the interaction goes like this:
The Arctic cod feeds on plankton and silverslides and it is preyed upon beluga whales and ringed seals.The sea duck goes to the bottom of the ocean to feed on benthic organisms and also consumes plankton and silverslides. It doesn't really have predators.The beluga whale doesn't really have predators, but it feeds on fish such as silverslades and Arctic cod.Ringed seals feed on plankton and Arctic cod and are then consumed by polar bears.Therefore, according to this information, all organisms except the ringed seal feed directly on silverslides.
If the outside temperature decreases by 20 degrees Celsius, what will happen to a reptile’s body temperature?
Final answer:
A reptile's body temperature will decrease with a 20-degree Celsius drop in outside temperature due to their ectothermic nature. They become sluggish and may enter estivation to conserve energy, performing only vital functions to survive.
Explanation:
If the outside temperature decreases by 20 degrees Celsius, a reptile's body temperature will also decrease. This is because reptiles are ectothermic organisms, meaning their internal body temperature is determined by their surrounding environment. Unlike endothermic animals, which can generate internal heat to maintain constant body temperature, reptiles must rely on behavioral adaptations to regulate their temperature. Reptiles, such as an American alligator basking in the sun, absorb heat when it is available to increase their body temperature.
When environmental temperatures drop, reptiles like snakes will seek shelter and become sluggish as their body temperature falls. This slowdown can affect their heart rate, breathing rate, and overall metabolic function. Some reptiles may enter a state of estivation, a period of inactivity and lowered metabolic rate, to conserve energy and survive until temperatures become favorable again. In essence, a reptile's body will perform only critical activities necessary to sustain its living state during such times.
Final answer:
A reptile's body temperature will likely decrease if the outside temperature drops by 20 degrees Celsius because reptiles are ectotherms and their temperature varies with environmental conditions. They may enter brumation to cope with the cold.
Explanation:
If the outside temperature decreases by 20 degrees Celsius, the body temperature of a reptile is likely to decrease as well since reptiles are ectotherms. Reptiles rely on external heat sources to regulate their body temperature. Without behavioral adaptations such as basking in the sun, a reptile’s body temperature will drop in response to the cooler environmental temperatures. This is because reptiles are also poikilotherms, meaning their body temperature varies with the environment.
In colder conditions, reptiles may enter a state of brumation, a dormancy-like state where metabolism slows down and the reptile becomes very sluggish. It is important for reptiles to find ways to maintain their body temperature, as a significant drop can affect their physiological processes and overall survival.
Amanda is presented with a piece of metal and asked to determine its physical
properties. Which of the following groups best represent the physical properties of
metal.
soluble in water, thermal conductivity, low melting point
electrical conductivity, high melting point, soluble in water
thermal conductivity, magnetism, low melting point
magnetism, electrical conductivity, high melting point
Answer:
D. magnetism, electrical conductivity, high melting point
Explanation:
Magnetism is the property of metal due to which they are attracted by magnets. Metals have high electrical conductivity which means they are good conductors of electricity. They also have high melting points i. e. they require high amount of heat to change its solid state into liquid state. In melting, bonds are broken down due to the applicable of heat energy.
The last option is correct.
magnetism, electrical conductivity, high melting point
The following information should be considered:
Magnetism is the property of metal because of which they are attracted by magnets. Metals contains high electrical conductivity that represents they are good conductors of electricity. They also have high melting points in the case when it require high amount of heat to change its solid state into liquid state. In melting, bonds are broken down due to the applicable of heat energy.Learn more: brainly.com/question/17429689
How do you adaptations help animals
Answer:
it helps animals adapt to the places around them
What is a physical
property of the substance
inside the flask?
A. it is a plasma
B. it is a gas
C. it is a liquid
D. it is a solid
Answer: your answers are between b c and d hope this
Helps w
Explanation:
Match the # in the diagram with the correct structure/term.
Column A Column B
1. -------- a. tRNA (anti-codon)
2. ------- b. amino acid
3. -------- c. polypeptide chain (protein)
4. --------- d. codon
Match the color "RED" numbers to the words from column B.
Put the words from Column B on the numbers from 1-4 on Column A.
Answer:
I just know 2 is polypeptide chain did you what process is that ?
What does this image represent about population (the black dots represent population)?
A.
uniform population distribution
B.
life table
C.
survivorship curve
D.
random population distribution
E.
clustered population distribution
Answer:
D random population distribution
Explanation:
for plato
Answer:
D. random population distribution
Explanation:
For this lab, assume that the allele for black fur is dominant. This allele’s symbol is .The allele for white fur is recessive. This allele’s symbol is .
For this lab, assume that the allele for black fur is dominant. This allele's symbol is B. The allele for white fur is recessive. This allele's symbol is b.
What do you mean by alleles?According to the leading textbooks on genetics and evolution, an allele is a variation of the same sequence of nucleotides at the same location on a long DNA molecule.
At a given genomic location, an allele is one of two or more versions of the DNA sequence (a single base or a segment of bases). For any given genomic location where there is variation, an individual inherits two alleles, one from each parent.
For instance, a prevailing allele can supersede the characteristics of other latent alleles, and these properties assist with concluding things like an individual's eye and hair tone.
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Answer:
Black fur is B
White fur is b
Explanation:
edge
Select all the correct answers.
According to Newton's law of universal gravitation, which statements are true?
As we move to higher altitudes, the force of gravity on us decreases.
As we move to higher altitudes, the force of gravity on us increases.
As we gain mass, the force of gravity on us decreases.
As we gain mass, the force of gravity on us increases.
As we move faster, the force of gravity on us increases.
Reset
Next
Answer:
The correct answer is : As we gain mass, the force of gravity on us increases.
Explanation:
what is the define for infection
Answer:
The process of infecting or the state of being infected
Explanation:
Please help me but them in the right box!!! Will give brainlist :)
Answer:
1) Light energy converted into usable chemical energy - - - - - Photosynthesis reaction.
2) Converts glucose to ATP - - - - - - - aerobic and anaerobic respiration.
3) Does not require oxygen - - anaerobic respiration.
4) Oxygen is a reactant - - - aerobic respiration.
5) Light energy converted into usable chemical energy + Oxygen is a reactant - - - - Photosynthesis reaction, aerobic respiration.
6) Light energy converted into usable chemical energy + Does not require oxygen - - - -Photosynthesis reaction, anaerobic respiration.
7) Does not require oxygen + Oxygen is a reactant - - - aerobic respiration, anaerobic respiration.
8) All - - - - chemical reactions.
Describe the role of the American alligator as a keystone species
Alligators have a big habit of helping carnivores like the wolf, cougar, bear, etc. hunt off deer and fish. Even with this amount of carnivores around, just a simple change as one carnivore removal such as the alligator would increase the fish population. This would make the bears have more time for fishing. The next thing to happen would lead to bears increasing more rapidly, then deer, elk, and moose begin to decrease due to the bear increase.
Portions of an MRNA strand that do not code for proteins are
A. exons
B. introns
C. caps
D. tails
Answer: Introns
Explanation: Introns are non-coding sections of an RNA transcript, or the DNA encoding it, that are spliced out before the RNA molecule is translated into a protein.
The portions of an mRNA strand that do not code for proteins are:
B. introns.
- Introns are non-coding regions of mRNA that are transcribed from the DNA but are removed during mRNA processing.
- Unlike exons, which contain coding sequences for proteins, introns are spliced out to produce a mature mRNA molecule that consists only of exons.
- Introns are intervening sequences found within a gene that do not encode protein sequences.
- During mRNA processing, introns are removed through a process called splicing, leaving only the exons, which contain the protein-coding sequences.
- This splicing process ensures that the mature mRNA molecule contains only the necessary genetic information for protein synthesis.
- Introns play roles in gene regulation, alternative splicing, and evolution, and their presence allows for the generation of multiple protein isoforms from a single gene.
- Exons, on the other hand, contain the coding sequences that are translated into proteins.
Which of the interidal zones experiences the highest complexity and diversity of marine life?
Answer:
Lower littoral has the highest complexity and diversity of marine life.
Explanation:
Because the water is shallow enough and suitable for seaweeds to get enough sunlight. It's also protected from large fish because of the wave action and the relatively shallow water.
Final answer:
While the intertidal zone has a significant variety of marine life adapted to its harsh and dynamic conditions, the highest biodiversity in marine biomes is found in estuaries and coral reefs.
Explanation:
The intertidal zone, which is the area between high and low tide, exhibits a significant variety of marine life due to the challenging conditions organisms must face, such as exposure to air at low tide and submersion during high tide. Despite this complexity, the intertidal zone is not the marine biome with the highest biodiversity. This title is held by estuaries and coral reefs, which present the most complex and biodiverse environments in marine biomes. The organisms in the intertidal region have adaptations like tough exoskeletons to protect against desiccation and wave damage, but the dynamic nature of this zone limits the establishment of more static life forms like plants and algae.
c what part of the nucleotide make up the "rungs" of the ladder?
d. In nucleotides what do the rungs labeled with A,G,C,T represent?
e. The structure of DNA is supported by a backbone called
f. Given the sequence of DNA, what is the complementary strand of ATGCAG
Answer:C) the nitrogenous bases
D) AGCT represent nitrogenous bases: Adenine, Guanine, Cytosine and Thymine respectively.
E) The structure of DNA is supported by a backbone called deoxyribose sugar
F) The complementary strand is TACGTC
Explanation: A nucleotide is consist of a nitrogenous base, a deoxyribose sugar and a phosphate group. The nitrogenous bases found in DNA are Adenine, Guanine, Cytosine and Thymine and are represented as A, G, C, and T respectively. The bases in one DNA strand from bonds with the bases in the complementary strand thus forming steps in the double stranded DNA. In bond formation among the bases, Adenine bonds with Thymine while Guanine bonds with Cytosine. Therefore in a double stranded DNA, wherever G is found in one strand, C occurs in the complementary strand and wherever A is found, T occurs in the complementary strand.