Answer:
Study 1:
Independent- Light
Dependent - flowering patterns
Study 2:
Independent- Penicillin
Dependent - Growth of E. Coli
Study 3:
Independent- Progesterone
Dependent - Ovulation
Explanation:
To differentiate independent and dependent variables, just remember that the dependent variable is not changed by the researcher. It changes depending on the independent variable. in short, it is what is being tested on. The independent variable on the other hand, is manipulated by the researcher to elicit a change in the dependent variable.
In the three study scenarios provided, the independent variables 'light', 'penicillin', and 'progesterone' are manipulated to observe the outcomes on the dependent variables 'flowering patterns', 'growth of E. coli', and 'ovulation', respectively.
Understanding the concepts of independent and dependent variables is crucial for analyzing experimental studies. In each given study, the independent variable is the one that is being manipulated or changed by the researchers, while the dependent variable is the one that is being measured or observed to see how it is affected by the changes in the independent variable.
Study Identifications:
Study 1: The independent variable is light, because it's what the researchers alter to observe the effect. The dependent variable is flowering patterns of plants because it's what changes as a result of light exposure.
Study 2: The independent variable is penicillin, and the dependent variable is the growth of E. coli, which is measured to determine the effect of penicillin.
Study 3: The independent variable is progesterone, as this is what's being tested, and the dependent variable is ovulation in rats, as this is what is influenced by the hormone.
When constructing data tables or charts, remember to place the independent variable on the x-axis and the dependent variable on the y-axis. Also, ensure rows and columns are clearly labeled with appropriate units.
Which of the following defines wikipedia
Answer:
a free encyclopedia...but probably best not to use it cos apparently anyone can just edit it
Wikipedia is an online encyclopedia that operates through a process called crowdsourcing, which involves soliciting contributions from a large online community. It sources its information from a range of resources such as government reports, newspapers, and other well-regarded media organizations. It has become a very significant source of knowledge production.
Explanation:Wikipedia is an online encyclopedia that is the result of a crowdsourcing effort. Unlike traditional encyclopedias such as the Random House Encyclopedia and the New Encyclopædia Britannica, which are written by experts and provide detailed information, Wikipedia allows thousands of volunteers to add and correct material. This process, evident in digital platforms like Wikipedia and Kickstarter, is known as crowdsourcing. This method of gathering services, ideas, or content bypasses traditional routes and instead harvests the collective knowledge of a large online community.
Wikipedia collects and presents information in the form of articles on various topics. These are sourced from long articles, reports from major newspapers and well-regarded media organizations, government and international agency reports, well-sourced nonacademic books, and more. It has become a significant source of knowledge production, as explained by Danah Boyd in her work, 'It's Complicated: The Social Lives of Networked Teens.'
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What is emigration?
A. when animals move into an ecosystem
B. when animals die in an ecosystem
C. When animals leave an ecosystem
D. When animals are born in an ecosystem
When animals leave an ecosystem is emigration. thus, option C is correct.
What is emigration?The permanent change of residence by an individual or group is called as emigration.
Permanent emigration represents a loss of population in the place of origin. Whether this loss translates into a long-run reduction in population size depends on the age and gender composition of emigrant flows, and whether birth and survival rates rise in response to the loss of population.
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What’s the role of oxygen in cellular respiration?
Answer:
if oxygen is present aerobic respiration takes place and pyruvate produced in glycolysis in cytosol enters into mitochondrion for further oxidation through kreb's cycle
Cellular respiration is the process through which cells generate energy. Although other species, such as yeast or bacteria, don't necessarily require it, our body cells require oxygen to carry out this activity.
What oxygen role in cellular respiration?They can produce energy in different ways. However, since the main topic of this lesson is the function of oxygen, we'll stick with animal cells, such as those found in human body.
Cellular respiration takes place within every body cell. They transform carbon dioxide and glucose, a substance that is present in meals, into ATP (adenosine triphosphate), or cellular energy.
Despite the fact that this process can be described by a single equation, there are really a number of minor processes that must be completed before we may use oxygen to produce ATP.
Therefore, Aerobic respiration occurs if oxygen is present, and pyruvate produced during glycolysis in the cytosol enters the mitochondrion for further oxidation through the Kreb's cycle.
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Cells have receptors on their surfaces to sense their environment and to communicate with other cells. Viruses use these cell receptors to
A. cause the cell to move to an area well suited for viral replication.
B. cause the cell to disintegrate, or lyse.
C. insert their genetic material into the cellular genetic material.
D. enter the cell.
Viruses use the cell receptors to enter the cell.
Option D.
Explanation:
Viruses are the small intracellular pathogens which cannot reproduce on their own. A viral particle can make other virus particles only when it is inside the host. To gain entry inside the host, viral particles interact with the cell receptors of the host through which they are either endocytosed or inject their genetic material inside the host cell.
Once the viral genetic material RNA or DNA is inside the host it takes over the host replication machinery to replicate viral genome and to transcribe the viral proteins to produce more viral particles which rupture the cell and released to invade other cells.
Which statements describe continental crust? Select the three correct answers (apex)
A. It is formed at some of volcanic activity on the ocean floor
B. It is between 25 and 70 km thick
C. It is made of all types of rocks
D. It contains silicate minerals high in sodium, potassium, aluminum and calcium
E. It is relatively young (less than 180 million years old)
Answer:
B, C, D
Explanation:
The following statements are true regarding the continental crust;
It is between 25 and 70 km thick
Its made of all types of rocks
It contains silicate minerals high in sodium, potassium, aluminum, and calcium
Answer: Option (B), (C) and (D)
Explanation: Continental crust is a thick plate that comprises of sedimentary, metamorphic and igneous types of rocks. They are less denser compared to the oceanic crust and usually have a thickness of about 35-40 km, and increases upto 75-80 km at the mountain ranges. It often contains silicate minerals, that are mainly enriched in sodium, aluminium, calcium and potassium.
Thus, the correct options are mentioned above.
You're moving into a new apartment and trying to fit your large chair through the doorway. Your friend, who is helping you move, suggests rotating the chair a different way and seeing if it fits. However, you remember that the last time you moved the chair, it must first be reclined in order to fit through the doorway. Which choice below correctly identifies the learning strategies that you each are using in this example?
A. Your friend is demonstrating trial-and-error, and you're demonstrating imprinting.
B. Your friend is demonstrating insight, and you're demonstrating trial-and-error.
C. Your friend is demonstrating trial-and-error, and you're demonstrating insight.
D. Your friend is demonstrating insight, and you're demonstrating imprinting.
the study of interaction between living organisms and their enviroment is called (a) phytogeography (b) ecology (c) phytosociology (d) ecosystem
Answer:
Ecology.
Explanation:
It's the study of the interaction between organisms with eachother and their environment.
Ecology is the scientific study of how living organisms interact with each other and their environment, spanning levels from individual organisms to complete ecosystems.
The study of the interaction between living organisms and their environment is called ecology. This branch of biology deals with the relationships that living organisms have with one another as well as with their physical surroundings. Ecologists explore these complex interactions at various levels, including organismal, population, community, and ecosystem levels. At the most inclusive level, they study ecosystems, which consist of both the biotic (living) and abiotic (nonliving) components of an environment. An ecosystem can be as small as a drop of water or as large as a forest and includes both aquatic and terrestrial types.
Understanding ecology is vital to address many issues facing our world today, such as climate change, biodiversity conservation, and sustainable development. The field overlaps with other disciplines like geography, geology, climatology, and environmental science, illustrating its broad relevance to our understanding of life on Earth.
The change that occurred in peppered moths is an example of
a. overproduction
b. natural selection
c. migration
d. isolation
Answer:
I think it's D, but it could be B.
Explanation:
Answer:
B. natural selection
Explanation:
when a species needs to breed the males often compete and the stronger of them usually prospers, causing them to be more likely to breed.
which symbols below represent the ions found in the glass of water ?
A. OH- and H+
B. CO2 and O2
C. O2 and H2
D. NH3- and H+
Answer:
A
Explanation:
Some plants require fire in order to release their seeds. True False
This statement is true!
Sunny~ ☺
Drag each label to the correct location on the image.
G
Organisms adopt different strategies and structures to make sure their offspring
it uses.
herds young into
center of group
produces many
offspring at once to
protect against high
predation risk
protects offspring
until environmental
conditions are ideal
for growth
COO
B
13
1994
7
ODOS
SI
.
AN
.
I
Answer:
1)herds young in to center of group
2)produces many
offspring at once to
protect against high
predation risk
3)protects offspring
until environmental
conditions are ideal
for growth
Explanation:
Answer:
1)herds young in to center of group
2)produces many
offspring at once to
protect against high
predation risk
3)protects offspring
until environmental
conditions are ideal
for growth
Explanation:
Lisa had 20 grams of water. She poured out 15 grams. Which of the following physical properties of the water changes? (4 points)
Boiling point
Density
Electrical conductivity
Volume
Answer:
Volume
Explanation:
The boiling point and density of water never changes, no matter how much you add
So the answer CAN'T be Boiling point or Density
Electrical Conductivity changes only when the number of ions in a solution changes
So it CAN'T be Electrical Conductivity
It has to be VOLUME because volume is the only physical property that changes when you add or take away liquid from a liquidous mixture
Molecular models of two different substances are shown below. In the
molecule on the left, the oxygen atom pulls on electrons more strongly than
the hydrogen atoms. In the molecule on the right, the two oxygen atoms pull
on the shared electrons with the same strength.
Water molecule, H,O Oxygen molecule, Oz
When the two substances are put in the same container, they do not attract
each other. Why does this happen?
A. They both contain oxygen.
B. One is polar and one is nonpolar.
C . They are both polar.
D. They contain different elements.
Answer: Option B
Explanation:
The molecules that is described in the model is water [tex]H_{2}O[/tex] and other molecule is [tex]O_{2}[/tex] molecule.
Due to difference in electronegativity of hydrogen atom and oxygen atom there is partial positive charge on each hydrogen atom and partial negative charge on oxygen atom of [tex]O_{2}[/tex] molecule.
Hence, water is a polar molecule.
Whereas in [tex]O_{2}[/tex], there is covalent bonding due to sharing of electrons. Hence, this molecule is covalend and hence, it is neutral in nature.
Therefore, [tex]O_{2}[/tex] is a non-polar molecule.
So, both the molecules are put together in the container then there will be no attraction in between them because water molecules contains charge but oxygen molecules does not contain any charge as they are neutral.
Thus, we can conclude that one molecule is polar and other is non polar so they do not attract each other.
what are some possible consequences of preventing prescribed burns and natural wildfires
Answer:
Just to name a few...
- The soil around the forest may start to erode
- Lose its mineral wealth and resources
- If not controlled, plant life can take over buildings or homes.
Explanation:
Please mark brainliest and have a great day!
Preventing prescribed burns and natural wildfires can lead to increased risk of catastrophic wildfires, ecological disruptions, and affect public safety and resource management decisions.
Possible consequences of preventing prescribed burns and natural wildfires:
Increased risk of catastrophic wildfires: Suppressing fires can lead to a buildup of flammable material, making forests more vulnerable to destructive fires in the long term.Ecological changes: Fire exclusion can disrupt forest ecosystems, affecting forest structure and function.Public safety and resource management: Decisions on fire management can impact personal liability, career implications, and long-term risks to ecosystems and communities.Which of the following correctly describes the difference between arteries and veins?
A. Veins bring blood to the lungs, while arteries circulate blood to the body
B. Veins carry oxygenated blood, while arteries carry blood low in oxygen
C. Arteries carry oxygenated blood, while veins carry blood low in oxygen
D. Arteries carry blood to the heart, veins carry blood away from the heart
Answer:
C. Arteries carry oxygenated blood, while veins carry blood low in oxygen
Explanation:
Arteries and veins are two types of blood vessels that differ in their structure, function, and location in the body. Arteries are the blood vessels that carry the oxygenated blood from the heart to the body parts.
On the other hand, veins are the blood vessels that collect the deoxygenated blood from various body parts and deliver it to the heart for oxygenation.
Answer:
C
Explanation:
what is similar in size and shape to bacteria
Answer:
Archaea
Explanation:
Please mark brainliest and have a great day!
according to cell theory; which structures carry out the basic function of living things?
a. atoms
b. organs
c. cells
b. nuclei
According to cell theory, cells carry out the basic function of living things.
What is cell theory?The cell theory is a scientific theory that states that,
All organisms are made up of cells.All new cells are produced by pre-existing cells.The cell theory states that the cell is the fundamental structure and functional unit of living matter.
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what is a gamete?????
Answer:
an organisms reproductive cells
Explanation:
A gamete is a reproductive cell produced during meiosis carrying a haploid number of chromosomes. In humans, the male gamete is sperm and the female gamete is an oocyte; these gametes are essential for sexual reproduction and combine during fertilization to create a new organism.
A gamete is a reproductive cell that is produced during the process of meiosis and carries a haploid set of chromosomes. In human reproduction, there are two types of gametes: the male gamete, known as sperm (or spermatozoon), and the female gamete, called an oocyte (usually referred to as an egg).
These gametes are critical for sexual reproduction because during fertilization, one sperm fuses with one oocyte, thereby combining their haploid sets of chromosomes to form a diploid zygote, which then develops into an embryo. In the context of assisted reproductive technology, there is a procedure called gamete intrafallopian tube transfer which involves placing both sperm and ova (eggs) into the fallopian tubes of the female, allowing natural fertilization to occur.
Choose the best explanation of codominance. A. Genes are blended during homologous recombination. B. In a heterozygote, both alleles are expressed. C. In a heterozygote, both alleles combine to form an intermediate phenotype. D. A heterozygote is considered a carrier for the recessive allele.
The exact explanation for co dominance is that in a heterozygote, both alleles are expressed.
Answer: Option B
Explanation:
Mendel drafted certain terminologies in the history of genetics such as dominance and recessive traits. But later after Mendel, certain scientists found out some exceptions for this concept such as codominance, incomplete dominance and linkage.
Among this codominance is a trait in which for a heterozygote individual has both the characters expressed for example when a red flower and a white flower are mixed, the resulting flower is pink in color.
The best explanation of codominance is in a heterozygote, both alleles are expressed. Therefore, option (B) is correct.
Heterozygous individuals express both gene alleles due to codominance. In codominance, both alleles are expressed separately without blending, unlike in partial dominance.
A and B alleles dominate the ABO blood group system. A and B antigens are expressed on red blood cells if a person inherits A and B alleles from their parents. Thus, the person's blood type is AB, not A-B. Therefore, option (B) is correct.
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which best describes the earlest land plants
Answer:
The land is believed to be inhabited by the algae on the first. The earliest land plants were the ones which did not have deep roots. They were the non-vascular plants and included mosses, hornworts, and liverworts. i.e., the bryophytes. They reproduced through spores. They also had very thin leaves.
A population of white, grey, and black lizards lives on a volcanic island, and each phenotypic color has an equal chance of survival. However, after the latest
volcanic eruption, 75 percent of the island was covered with volcanic ash and hardened lava flows. This event caused the black lizards to be naturally selected
over the white and grey lizards. This change is an example of what type of microevolution?
A) stabilizing selection
B) normal distribution
C) directional selection
D) disruptive selection
I would say disruptive selection, because the sudden eruption of the volcano disrupted the circumstances of the lizards, allowing the black ones to survive better because of camouflage against the black rock.
Hope this helps!
The change in the lizard population after the volcanic eruption is an example of directional selection, where the environment favors one extreme phenotype, leading to a genetic shift.
The scenario where a volcanic eruption on an island causes the environment to change in a way that favors black lizards over white and grey lizards for survival is an example of directional selection. This type of natural selection happens when environmental changes favor phenotypes at one extreme of the existing variation within a population. In this case, the black lizards are naturally selected because they are better camouflaged in the environment covered with volcanic ash and hardened lava flows, thereby increasing their chances of survival and reproduction. This results in a shift in the population's genetic variance toward the darker, fit phenotype.
Match the following. 1. an act of fertilization involving the transfer of cell contents to another cell; usually occurs in simpler organisms diploid 2. having chromosomes in homologous pairs conjugation 3. a type of mating pattern in which eggs and sperm are released into the water after the mating partners come near one another; occurs outside the body of the female external fertilization 4. the fusion of gametes to produce a new cell or zygote; often said to be the union of egg and sperm fertilization 5. having a single, complete set of chromosomes, or one half of each pair of homologous chromosomes haploid
Answer:
1. Conjugation
2. Diploid
3. External fertilization
4. Fertilization
5. Haploid
Explanation:
Conjugation is a cell-to-cell encounter between bacteria cells. The bacteria come close to each other and DNA is then transferred through a tube-;ike structure called pilius.
The difference between diploid and haploid is that diploid organisms have chromosomes that come in pairs. The chromosomes are paired up with another chromosome that is similar in shape and size and that is why they are called homologous pairs. Haploid on the other hand do not come in pairs. In human beings for example, the egg cell and sperm cell are haploid, only having one homologous chromosome. When they join together during fertlization, they form a diploid.
Fertilization is the union of gamete cells, male and female, which result in the formation of a zygote. There are two types of fertilization, internal and external. Internal fertilization occurs when the union of the sex cells (gametes) occur inside the organism. You would see this in humans, where fertilization occurs in the womb. External fertilization occurs when the union occurs outside the organism and a good example of this would be fish. The female expels it's eggs into the water and the male would release its own sex cells as well, and they would join in the water.
Explain how the data answered the essential question. Use the following questions to guide your thinking and your answer.
Answer:
There is not enough detail or material to make my answer, i'ts unfortunate but i am unable to answer this question
Explanation:
Answering scientific questions with data involves justifying the relevance of the data collected, making decisions based on patterns observed, and stating conclusions clearly. Discrepancies between expected results and actual findings can lead to discussions on experimental design and data reliability.
To analyze the data and answer how it addressed the essential question, we begin by looking at the types of data collected. Justifying the selection of data involves discussing why this data is appropriate for answering the scientific question at hand. For instance, in an experimental context, quantitative data from measurements or qualitative observations may be gathered to test a hypothesis.
After collecting and graphing the data in an experiment, you then make decisions and conclusions. To state your decision, you must determine whether the data supports or refutes your initial hypothesis based on the patterns observed. Then, to state your conclusion, craft a complete sentence summarizing these findings. This conclusion may confirm or differ from expected results, prompting discussion on possible reasons, such as experimental error, assumptions, or the robustness of the data.
In making your profile and examining the data, it's essential to engage in discussions, whether with a partner or in a group. By doing so, you ensure varied perspectives and a thorough understanding of the data's implications. This collaborative analysis culminates in sharing results with the class, fostering a deeper knowledge of the importance of data interpretation in scientific inquiry.
Comprehensive Biology
What scientific breakthrough occurred around 50 years ago that
of the biology puzzle together?
Discovery of cells
Evolutionary theory
The discovery of cells is correct.
The graph shows three different projections of human population growth. If you assume that the high projection is correct, what is one way the larger human population can ensire it has enough food?
A. By returning to hunting and gathering
B. By finding more effcient ways of growing crops
C. By learnign to eat a lot less food
D. By focusing more on ideas and services
Answer:
B
Explanation:
They are correct. It is B, by finding more efficient ways of growing crops
The one way the larger human population can ensure it has enough food is option B. By finding more efficient ways of growing crops.
What are the ways for the larger human population to ensure it has enough food?Grow a wider variety of crops. Around 60 percent of all calories consumed come from just four crops: rice, wheat corn, and soy. Ensuring food access and availability in the face of climate change will require the production of a wider range of foods.Reduce Food Waste. An estimated one-third of all food produced is wasted from farm to home. One of the solutions is to upcycle food that would have been thrown away. This includes turning waste food into useful items, finding buyers for food that would rot in the fields if unsold, to selling non-uniform – or ugly – fruits and vegetables.Shift Diets to More Plant-Based Foods. A diet high in meat is very wasteful. Meat from cattle, sheep, and goats uses precious resources, and the demand for meat and dairy products is steadily growing. The only way for more people to have access to animal-based proteins is for other people to consume less. Look to the Seas for More Food. With the earth's population growing, turning to the world's oceans for food is the new blue food revolution. But taking more fish out of our oceans and inland waters is not the answer.To learn more about population and food, refer to: https://brainly.com/question/18681084
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Which best describes how parents affect the genotype of a child?
A.the parents decide what to feed their child
B.the parents choose whether to educate their child
C.the parents allow their child to stay up late
D. the parents pass along genes to the child
Answer:
d. the parents pass along genes to the child
Explanation:
the other answers are based on decisions and that is not what genotypes do
Answer: D. the parents pass along genes to the child
Explanation: The word genotype refers to the genes in a human's DNA that determine traits, the heritable genetic identity and some of the physical characteristics of that organism such as eye and hair color height, certain diseases and behaviors, parents pass that to their children.
which interaction would be an example of competition?
A. clown fish and anemones
B. rabbit and hawks
C. sharks and remoras
D. weeds and planktons
E. sharks and planktons
An example of competition is found in option D, where weeds and plankton (especially aquatic plants, also known as 'weeds') compete for resources such as sunlight.
Competition occurs between individuals of two or more species that utilize the same resource in a given area. Weeds typically compete for water and nutrients with other plants in their vicinity. Although planktons are not directly competing with weeds, this option would still be an example of interspecific competition for resources such as sunlight if considering aquatic plants, which are often referred to as 'weeds' in the context of competition with algae (which are a type of plankton).
At what point on a roller coaster is the gravitational potential energy (GPE) the lowest?
Question 7 options:
at the top of the highest drop
at the lowest point of the roller coaster
while on the decline
while on the incline
Answer:
at the lowest point
Explanation:
highest at the highest point lowest at the lowest point
a rational expression has been simplified below. (x-5) (x+1)/3(x+1) = x-5/3 for what values of x are the two expressions equal
Answer:
All real numbers except -1
Explanation:
apex
All are real numbers except -1.
Why is it referred to as a rational expression?
An algebraic expression wherein each the numerator and the denominator are polynomials e.g. is referred to as a rational expression. for the reason that denominator can't be 0 there are values of x that can be excluded from the rational expression.
What is the real number?Real numbers are numbers that include each rational and irrational numbers. Rational numbers such as integers (-2, zero, 1), fractions(1/2, 2.5) and irrational numbers together with √three, π(22/7), and so on., are all actual numbers.
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What is the purpose of the retina?
to convert light rays into neural impulses
to focus incoming light rays
O to see sharpness in images
to change size depending on the light it sees
Answer:
The purpose of the retina is to receive light that the lens has focused, convert the light into neural impulses
Answer:
the answer is option a to convert light rays into neural impulses
Explanation: