True.
Explanation:
An independent variable is what is changed by the scientist experimenting, or you. An easy way to remember this is that independent starts with an "I", which "I" am the one that manipulates the variable. A good experiment only has one independent variable.
A dependent variable is the data of the experiment. This could be the impact a drug has on individuals, how much a plant has grown, test scores of students, etc. What is measured at the end of an experiment is the dependent variable.
A control variable is something that is stayed constant throughout the experiment. This could be the amount of water, type of soil, amount of light, the color of light, etc. These things are not changed.
Question 6 (1 mark)
Learning goal 2: There are usually more prey compared to the
predators that feed on them.
Which of the following statements explains this?
All of the energy stored in the prey is transferred up the
food chain
Predators need energy for cellular respiration but their
prey do not
Only some of the energy stored in the prey can be used
by the predators to stay alive
Answer:
option A
Explanation:
Energy gotten from the prey will be transferred up to the food chain.
so directly or indirect, all other members of the food depend on this energy
Question 9(10 points)
You are heating a piece of glass and now want to pick it up. You should
a
Ob
pick up the end that looks cooler.
use a rag or paper towels.
pour cold water on it.
ос
od
use tongs.
Question 10 (10 points)
Answer:
i think urse a
Explanation:
betbe
Which is not a source of carbon dioxide?
O Forest fires
O Volcanoes
O Glaciers
OThe use of fossil fuels
Hi there! :)
Answer:
Glaciers.
Explanation:
Forest fires, Volcanoes and the use of fossil fuels all are sites of combustion. Carbon dioxide, or [tex]CO_{2}[/tex] is a byproduct of this reaction, which makes them sources of this gas.
On the other hand, glaciers are large, frozen reservoirs of water [tex](H_{2}O)[/tex] , which makes them not sources of carbon dioxide.
"How many bubbles would both plants produce at the following depths: - 13 meters, 20 meters, 28 meters"
Answer:
39, 45
27, 42
6, 7
Explanation:
In 13 meters depth, there are 39 bubbles produced per plant in one minute and 45 bubbles are formed per plant in one minute. In the depth of 20 meters, there are 27 bubbles produced per plant in one minute and 42 bubbles are formed per plant in one minute. In 28 meters depth, there are 6 bubbles produced per plant in one minute and 7 bubbles are formed per plant in one minute.
What information did you include in your answer? Check all that apply. uranium-lead (U-Pb) dating relative chronology expected effect of additional similar results on mass-extinction hypothesis connection between the use of new technology and a possible revision in the mass-extinction hypothesis identification of the use of the new technology as a new experimental method
Answer: D connection between the use of new technology and a possible revision in the mass extinction hypothesis
E identification of the use of new technology as a new experimental method
Explanation:
The connection between the use of new technology and a possible revision in the mass extinction hypothesis and identification of the use of new technology as a new experimental method is the information to include in an answer. So the correct options are D and E.
What is a hypothesis?
Repeated experimentation and observation have been used to devise scientific theories. These theories have been further referred to by peer reviews before they have been generally accepted by the scientific community.
Science involves methods and data that make sense of the world. The methods of principles are internally-consistent and well described. The progression from a hypothesis to a theory can only be through testable, scientific laws. There are only a few scientific facts that are natural laws as well but there are many hypotheses that can be tested to generate a theory.
Therefore, the correct options are D and E.
Read more about scientific hypothesis, here
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PLZ HELP ASAP
1. What is the role of the cell membrane in cell division?
2. What is the role of the nucleus in cell division?
3. What is the role of the centricles in cell division?
4. What is the role of the microtubules in cell division?
5. Why are cells limited in size?
6. A cell with 2cm sides has what surface area?
Zoologist: Horseflies are attracted to horizontally polarized light, which reflects off large, dark animals that they bite. This may explain why zebras evolved vertical stripes—the stripes cancel the horizontal polarization of light and thus make zebras less attractive to horseflies.
In order to assess the plausibility of the zoologist's hypothesis, it would be most helpful to know whether
A. any insects other than horseflies are attracted to horizontally polarized light.
B. the vertical stripes on zebras make it easier for any insects other than horseflies to see them.
C. animals that horseflies commonly bite have evolved other means of reducing the impact an frequency of those bites.
D. any biting insects other than horseflies are strongly attracted to zebras.
E. zebras' vertical stripes provide camouflage protection against certain large predators potentially very dangerous to zebras.
Answer:
D. any biting insects other than horseflies are strongly attracted to zebras.
Explanation:
In order to assess the plausibility of the zoologist's hypothesis, it would be most helpful to know whether if any other insects other than the horseflies are strongly attracted to the Zebra. If other insects are attracted to the zebra, we can then try to research and see if these other insects also show tendencies to be attracted to horizontally polarized light before we can conclude on this hypothesis. The hypotheses will hold more strongly if the same phenomenon applies to other biting insects attracted to the Zebra.
An arid region with few plants describes which climate or biome? Options: chaparral tundra desert rainforest
the answer is dessert
Cigarette smoke contains a chemical that specifically mutates p53 and inactivates it. As a result of this mutation, what would happen in the affected cells? A.DNA damage would accumulate B. Cell death would not be activated C.The cell cycle would continue in spite of DNA damage D.All of the above
Answer:
The correct answer is - option D. all of the above.
Explanation:
Smoking cigarettes or consumption of tobacco contains chemical that is responsible for the mutating p53 gene specifically which inactivates the action of p53.
TP53 mutation changes the amino acid in the p53 protein which produces the altered or modified version of protein that is incapable of performing its action of repairing damaged DNA during cell cycle for genome stability. DNA damage would be accumulate as it is not able to control the cell division by apoptosis and cell death would not be activated.
Thus, the correct answer is - option D.
brain, nervous system, neuron, and a collection of neurons, what is their order from simplest to most complex?
Answer:
yes
Explanation:
I NEED HELP IM DUMB!!!!!
I have a few.... (I'm not that smart either lol
1. Fertilization
2. Female
3. Egg
4. Sperm
10. 46
Answer:
In the human life cycle, fertilization takes place to produce an offspring. The female provides the egg and the male provides the sperm. Both of these cells are referred to as gamete cells and are represented by the symbol n. The single cells fuse to form a zygote. These cells are represented by the symbol 2n. The fertilized egg has 46 chromosomes and has been through the process of meiosis. The cell division process of _____ occurs when the _____ number is reduced.
Explanation:
I got stuck about this far in. I'm not 100% sure all of this is correct but I tried my absolute best.
2. Give an example of a question someone might ask to start a descriptive investigation.
Answer:
Classification of trees in a forest is an example of a descriptive investigation
Explanation:
A descriptive investigation is aimed at describing/quantifying the characteristics of a given population or natural system. In descriptive research, the characteristics of the system are classified into descriptive categories. This type of investigation does not involve causal associations where a variable is tested to see if it will affect other variables. Examples of descriptive research include the classification of chemical elements in a periodic table, observing human social behavior under extreme conditions, etc.
A version of a gene is called a(n)
O allele.
O autosome.
O karyotype
O phenotype.
Answer:
allele
Explanation:
An allele can be defined as a variant of a gene localized at the same locus or chromosome position. These gene variants may encode the same protein (when different alleles encode the same protein sequence) or different protein variants (when nucleotidic differences encode distinct protein sequences). It is important to note that the diploid organisms (like humans) have two alleles for each gene, which are localized on homologous chromosomes.
A version of a gene is called an allele. Genes are sections of DNA that hold the instructions needed to make certain proteins or useful RNA molecules. Hence the correct option is A.
Alleles are distinct versions or variants of a gene that can cause changes in the trait or feature the gene controls.
Alleles are found at specific locations on chromosomes known as loci. Each gene is present in two copies in humans, one from each parent.
As a result, a person might be heterozygous (having two copies of the same allele for a given gene) or homozygous (having two copies of two distinct alleles).
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Choose the answer that best completes the blanks of this sentence in order. The two major groups of parasitic helminths include the ____ with a thin, segmented body and the ____ with a cylindrical, unsegmented body.
Answer:
The correct answer is - flatworms and roundworms.
Explanation:
Helminths are the group of free living and some are parastic organisms present in aquatic, terrestrial environment or in animals or plants respectively. parasitic helminths are the group of worms or organisms that lives inside the GI tract or other parts of the body of host and makes them weak. The two major groups of parasitic helminths are -
Flatworms (platyhelminths) is a parasitic helminths, have leaf like body which is thin and segmented while roundworms or nematode have cylindrical and unsegmented body.
Thus, the correct answer is - flatworms and roundworms.
Fluoxitine is given to a client at a dosage of 500 mg every 6 hours. Assuming that the half-life of this drug is 3 hours, at what point would the drug level in the body be 62.5 mg of the original dose?
Answer:
The correct answer would be - 9 hours.
Explanation:
The half life of a drug is the time that is required to decrease or reduced to one half of the its original achieved level or the highest amount previously taken. The half life of drug is also known as the time a drug take to complete its action.
At a dose of 500 mg the Fluoxitine drug would be 250 mg in 3 hour as it is given that half life of this drug is 3 hours, 125 mg in 6 hours, and in the end 62.5 mg in 9 hours.
Thus, the correct answer is : 9 hours.
Which of the qualities listed below explain why certain organisms are classified as indicator species
Answer:
Indicator species, organism—often a microorganism or a plant—that serves as a measure of the environmental conditions that exist in a given locale. ... For example, greasewood indicates saline soil; mosses often indicate acid soil. Tubifex worms indicate oxygen-poor and stagnant water unfit to drink.
Define negative feedback of homeostasis
Answer:
A negative feedback loop is a reaction that causes a decrease in function. It occurs in response to some kind of stimulus. Often, it causes the output of a system to be lessened; so, the feedback tends to stabilize the system. This can be referred to as homeostasis, as in biology, or equilibrium, as in mechanics.
plz give brainlist
hope this helped
2 Describe why it would be an advantage for the seeds
to be able to grow at any angle
Answer:
If plants could grow at any angle, resources could be better used, less labor would be spent, and crop production would increase.
Explanation:
By growing at different angles, crops could be generated in different locations that would not normally be beneficial or feasible for plant growth.
For this reason, land use would be higher for farmers as harvests would increase by making better use of the land and generating ideas to make better use of resources.
They could be better used, for example, a scale cultivation on a sloping terrain, no time would have to be spent flattening the ground and only the crops would have to be cared for.
What is the controversy behind banning oxo-biodegradables?
Answer:
Oxo-biodegradables do not meet international biodegradation requirements, which has caused the authorities to prohibit their use, contrary to their formulators who defend their benefits in the environment.
Explanation:
Oxo-biodegradables are a type of plastic that can be broken up into tiny pieces, but that is not biodegraded by the action of nature. In this case, this type of plastic does not meet international biodegradation requirements, in addition, it can cause pollution, as its mini particles can affect rivers, soils, crops, in addition to being dispersed in the air and being eaten by animals.
The great controversy is that the creators of this type of plastic defend their benefit in the environment, however the authorities, considering the polluting potential of oxo-biodegradables, prohibited its use.
Which is not an example of structural adaptation
Answer:
of a lion
Answer : Has strong legs for running
of a plant
Answer : Thorns or spines to protect the plant from animals
of an animal
Answer : Goslings following their mother to stay protected.
of a plant
Curling around a tree trunk
Explanation:
Hope it's help you. :-)
TRUE or FALSE. Tofu or other soy protein substitutes are TCS foods.
Answer:
FALSE!!
Explanation:
Proteins are composed of repeating units (monomers) called ____.
Answer:
Amino Acids make up proteins
What is true about the expiration dates of medications?
Answer:
Most medication does not go bad, but it is most effective by that date.
Explanation:
For the most part ingredients do not expire, but to get the best out of your medication it is best to follow the expiration guidelines
answer fastttt!!!!!Start with argon in a gaseous state. Manipulate the heat variable to change it to a
liquid, then a solid. Explain what you did to make this happen:
Answer:
By lowering the temperature.
Explanation:
Argon is a gas at room temperature. By changing its state from gas into liquid, we have to lower the temperature up to -185.7 degree Celsius while to change its state from liquid to solid, we have to lower the temperature up to -189.2 degree Celsius. There are two process occurs such as condensation and solidification, in condensation, argon gas is converted into liquid while in solidification, liquid argon is converted into solid.
Bees and Fungicides - CER i have 70 points Watch the HHMI Video: Effects of Fungicides on Bumble Bee Colonies CLAIM EVIDENCE REASONING Opinion: What should be done based on this information? Extension: Develop at least one new question related to bee colonies that could be tested. i have 70 points
Answer:
Use a connects app.
Explanation:
which cellular structure helps to maintain homeostasis by controlling the transportation substances into out of the cell
Answer:
Cell membrane
Explanation:
It forms an outer cover between the cell cytoplasm and it's outside environment.
Which step is shown?
transpiration
translocation
transcription
translation
The given question is incomplete, and as there is two steps present in protein synthesis, attaching the the image related the question to answer.
Answer:
The correct answer is : translation.
Explanation:
Translation is the second essential step of the central dogma or the protein synthesis process that is takes place in the ribosomes of the cell, Ribosome reads decode the codon, a sequence of 3 sequence. tRNA comes with the anticodon to the codons that are present on ribosome in order to bind the amino acids to it.
The amino acid that was brought by the tRNA is detaches itself as it bind to the polypeptide chain forming on ribosome to create polypeptide chain, this process repeats itself up-to the stop codon.
Thus, the correct answer is : translation.
Answer:
translation
Explanation:
4. What kind of bond is created by a weak electrical attraction between polar molecules?
ionic bond
hydrogen bond
nuclear bond
covalent bond
Answer:
hydrogen bond
Explanation:
by weak electrical attraction between two polar molecule hydrogen bond is developed between them
the example is water molecule in case of water two water molecules are attracted toward each other by strong hydrogen bond which is developed between highly electronegative oxygen of one water and electropositive hydrogen of another water molecule
Megan hypothesized that type AB+ is the most common blood type in the United States. After conducting a literature search, she discovered the graph at right. Based on the information in the graph, which blood type is most likely to be in shortest supply during an emergency? ✔ AB- Which statement is most likely Megan’s conclusion? The hypothesis is supported because the most common blood type in the United States is AB+. The hypothesis is not supported because the most common blood type in the United States is O+.
Answer:
Explanation:
The answer: AB-
second one : The hypothesis is not supported because the most common blood type in the United States is O+.
Answer:
c b
Explanation:
what chemical structures must be present for life to exist?
Answer:
Carbon, Hydrogen, Oxygen and Nitrogen.
Explanation: