what is the purpose of a control

Answers

Answer 1
To have a thing to compare your test results to. The control is not changed at all in an experiment so your other test results can be compared to it. It’s like the base level kinda

Related Questions

In which situation would new technology be most likely to cause a change in an existing theory about new structures a cell?
The new technology makes it possible to detect and analyze a structure more rapidly.
The new technology allows scientists to confirm the presence of an existing structure in a cell.
The new technology makes it possible to produce additional structures that were not previously there.
The new technology allows detection of a structure that could not be detected previously.

Answers

The situation that the new technology be most likely to cause a change in an existing theory about new structures of a cell is the new technology allows detection of a structure that could not be detected previously.

What is a technology?

Technology is the application of scientific knowledge for practical purposes. Technology is used in the advancement of the worlds. New technologies help to solve many problems that were impossible before.

Thus, the correct option is D.

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The new technology allows detection of a structure that could not be detected previously. Thus, the correct option is D.

What are the benefits of technology?

Sales will probably improve as a result of technology that makes it simpler for people to buy from you, including an e-commerce solution and numerous payment apps. Marketing departments are forced to adapt the social media platforms that your clients and potential customers use since they are born and die on a monthly basis.

The tasks that HR departments perform for hiring, reviewing applicants, onboarding, and training involve a significant amount of technology. The more HR duties you can complete using technology, the quicker they can be completed and the less likely it is that you will make a mistake that could result in a lost recruit, an employee leaving, or a lawsuit. Employee education on topics like benefit enrollment and corporate policies, for instance, guarantees appropriate paperwork is done and cuts down on training time for new hires.

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shin splints usually occur on the ___ part of the ___ leg.

Answers

Shin splints usually occur on the inner  part of the lower leg.

What is known as shin split?

This is the type of muscle spit that occurs to the leg due to the fact that it has undergone stress.

This is mostly seen in athletes. Continued stress on the shin bone is one of the factors that is known to cause shin split in people.

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Brad is swimming in the ocean on a hot sunny day. he finds the water to be much colder than the sand on the beach, even though the sun is warming them both. identify the reasons for brad’s observation. the water is colder than the sand because it requires more to change temperature. this is because the water has a higher than the sand.

Answers

Answer:

The sea has a higher specific heat capacity than the sand meaning it takes more energy to heat up. The sand has a lower SHC so it requires less energy to heat up therefore heats faster and Brad will observe the sand to be hotter than the sea

The sea has a higher specific heat capacity than the sand meaning it takes more energy to heat up.

What do you mean by specific heat capacity?

The specific heat capacity is defined as the quantity of heat (J) absorbed per unit mass (kg) of the material when its temperature increases 1 K (or 1 °C), and its units are J/(kg K) or J/(kg °C).

In thermodynamics, the specific heat capacity of a substance is the heat capacity of a sample of the substance divided by the mass of the sample, also sometimes referred to as massic heat capacity.

For liquid at room temperature and pressure, the value of specific heat capacity (Cp) is approximately 4.2 J/g°C. This implies that it takes 4.2 joules of energy to raise 1 gram of water by 1 degree Celsius.

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Crabeater seals eat krill.

Fishermen catch large amounts of krill from the sea.

How would a decrease in the number of krill affect the number of

crabeater seals?

___________________________________________________________________

_____________________________________________

Leopard seals also eat krill.
A decrease in the number of krill will affect the crabeater seals sooner
than it affects leopard seals.
Give the reason for this.

Answers

if the number of individuals in the krill decreased, then the crab and crabeater seal populations would decrease because there would not be enough food for all of the individuals of their populations to eat.

A permanent change in the DNA sequence of a gene

Answers

Answer:

A mutation.

Explanation: When a cell mutates is will be permanently changed.

a permanent change is a mutation

a ________ is a very large general-purpose computer that is capable of performing very many functions as if these are done simultaneously, and storing extremely large amounts of data.

Answers

The mainframe computer is a very large general-purpose computer that is capable of performing very many functions as if these are done simultaneously, and storing extremely large amounts of data.

What are mainframe computers?

Mainframe computers are computers used primarily by large organizations for delicate applications like processing bulk data.

They  are known for their large size, amount of storage, fast processing power and high level of reliability in results.

Thus, the mainframe computer is a very large general-purpose computer that is capable of performing very many functions as if these are done simultaneously, and storing extremely large amounts of data.

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What do animals need to survive and reproduce

Answers

Animals need features such as nutrition, movement, respiration, response to stimuli, growth, and excretion in order to survive.

Survival of animals

In order for an animal to survive, the following must be observed:

Nutrition: the animal must feed. Food gives energy and supplies the necessary nutrients for growth and repair.Movement: animals must be able to move away from dangers and in search of food.Respiration: the consumed food must be broken down and this can only happen by respiration.Growth: only by growing and developing will an animal be able to reach maturity and reproduce.Excretion: unused foods must be removed from the body due to their toxicity to the body.

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After a rap concert, as Dominique walks out into the fresh air, she notices her ears are ringing. This ringing indicates possible damage to the hair cells of her _____ membrane.Please type the correct answer in the following input field, and then select the submit answer button or press the enter key when finished.

Answers

This ringing indicates: possible damage to the hair cells of her basilar membrane.

What is basilar membrane?

The basilar membrane is the main mechanical element of the inner ear. Its vibration patterns have the effect of separating incoming sound into its component frequencies that activate different cochlear regions.

So we can conclude that the ringing indicates possible damage to the hair cells of her basilar membrane.

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30. 9) To complete this Venn Diagram, label the following cell parts as A (Prokaryotic), B (common to both) or C (Eukaryotic) characteristics:
A B C
Prokaryotic
Eukaryotic
capsule
flagella
cell wall (incl. plants)
cytoplasm
cell membrane
nucleus

Answers

capsule-Aflagella- Bcell wall-Bcytoplasm-Bcell membrane-Bnucleus-CA capsule is only present prokaryotes. Prokaryotes use their capsules to assist them stick to one another and different surfaces in their surroundings as well as to keep their cells from drying out.Flagella is present in both prokaryotes and eukaryotes however the flagella of eukaryotes is different due to presence of microtubules.Cell wall is present in prokaryotes and in plant cells. cell wall protects from desiccation and other substances that are harmful for the cell.Cytoplasm is present in both. however in eukaryotes the cytoplasm contains membrane bound organelles which are absent in prokaryotes.Cell membrane is present in both.Nucleus is only present in eukaryotes while in prokaryotes the genetic material is contained in a nucleus like substance.

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Answer: Capsule : A

Flagella: A

Cell Wall: B

Cytoplasm: B

Cell membrane:  B

Nucleus: C

Explanation: got this question correct on my lesson. Hope this helps, if you are in Visions, best of luck to you from another fellow vision student.

would cause evolutionary change in animal populations that colonize a new environment as its conditions differ from those found in their home?

Answers

Gene flow would cause an evolutionary change in animal populations that colonize a new environment as its conditions differ from those found in their home.

What is Gene flow?

In genetics, the expression 'gene flow' refers to the migration of organisms or movement of their reproductive germinal cells to a new place.

 

Gene flow is well known to alter the genetic structure of the population in the site where it occurs.

In conclusion, gene flow would cause an evolutionary change in animal populations that colonize a new environment as its conditions differ from those found in their home.

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What are substrates?
A. the products of chemical
reactions
B. a part of the lungs that helps with
oxygen exchange
C. the reactants (ingredients) of
enzyme-catalyzed reactions

Answers

The base on which an organism lives
C. Enzyme-catalyzed reactions

What are some possible benefits and dangers if the DNA is used to create a mutant form of the organism?

Answers

Explanation:

The majority of mutations have neither negative nor positive effects on the organism in which they occur. These mutations are called neutral mutations. Examples include silent point mutations. They are neutral because they do not change the amino acids in the proteins they encode.

Many other mutations have no effect on the organism because they are repaired beforeprotein synthesis occurs. Cells have multiple repair mechanisms to fix mutations in DNA. One way DNA can be repaired is illustrated in Figure below. If a cell’s DNA is permanently damaged and cannot be repaired, the cell is likely to be prevented from dividing.

Clouds can decrease the range of daily temperatures because ________.

Answers

According to the research, low and thick clouds reflect solar radiation and help to send it back into space during the day.

What are the clouds?

It is the mass of aqueous vapor that is suspended in the atmosphere that reflects solar radiation contributing to the cooling of the Earth's surface.

One of the determining factors of daily temperatures is the reflection of solar radiation by the clouds, when there are no clouds in the sky, diffuse radiation is produced through the process of diffusion through atmospheric particles.

Therefore, we can conclude that according to the research, low and thick clouds reflect solar radiation and help to send it back into space during the day.

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Which of the following is the best example of a scientific question?
A. What is my favorite food to eat in the morning?
B. What causes trees to lose their leaves in the fall?
C. Is it ethical to do experiments on animals?
D. How high can my dog jump?
SUBMIT

Answers

Answer:

b

Explanation:

Answer:

its c

Explanation:

What type of small insects do some ants “farm”?

Answers

Answer:

Ants and aphids have a special relationship, mutualistic in nature

Explanation:

hey each benefit from one another; ants protect aphids and aphids feed ants. Aphids feed their farmer ants a sweet honeydew liquid in exchange for protection from predators.

Which month recorded the lowest amount of ozone over the Antarctic?

Answers

The deepest ozone occurred in 1994 when the concentration sell to just 73 DU on September 30

Which process is responsible for the production of the adult body of an animal from a zygote?.

Answers

Answer:

fertilization

Explanation:

because the adult body can only form a zygote if the egg is fertilized

+
C
What will most likely increase if there is a high death rate?

Answers

Answer: would be emigration

Explanation: When the death rate shoots up in a particular environment due to certain factors organisms are bound to emigrate away for such environment to avoid death from reaching them


Which is transported in the xylem of a plant?
A. Dead material
B. Water
C. Chloroplast
D. Blastocysts

Answers

Water is transported in the xylem if a plant.

Answer:

water

Explanation:

water and other dissolve material are transported in the xylem of a plant

cellular membrane are permeable to _______ but impermeable to __________

Answers

Cellular membrane are permeable to nutrients but impermeable to protein.

What is cell membrane?

Cell membrane is the cellular structure that surrounds the cell which is semi permeable thereby selecting the substances that either leaves or enters the cell.

Nutrients are chemical that helps to sustain the cell while proteins are used to build up worn out part of the cell.

Therefore, the cell membrane allows the cell to absorb nutrients by resists the removal of proteins.

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According to the results for Patient 3 shown above, which antigens were present in Patient 3’s blood? Check all (if any) that apply. A antigen B antigen Rh antigen

Answers

Patient 3 blood contains A antigen and Rh antigen.

What antibody-antigen reactions?

Antibody-antigen reactions are reactions which occur when matching antigens and antibodies are mixed together.

In blood, antigen-antibody reactions result In agglutination of blood.

In the image shown, when Patient 3 blood is mixed with anti-A and anti-Rh aggluitination occurs, but no agglutination occurs with anti-B.

Therefore, Patient 3 blood contains A antigen and Rh antigen.

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Answer: B Antigen

Explanation: Other answer is wrong lol

Which of these
describes
humoral immunity?
A. the binding of antigen and antibody triggering a
response of plasma and memory b-cells to attack
B. t-cells and macrophages fighting infected cells that
are non-self or cancerous
C. our body remembering pathogens it has fought off or
learning from vaccines
D. obtaining immunity from an outside source, like
mother to baby
FutureForw

Answers

Answer:

D

Explanation:

obtaining immunity from an outside fluid

A. Refine the graph by adding the interval of time of extinction with a label drawn from the table as shown by “a”.

B. Analyze these data in terms of the clustering of extinction events.

C. Based on your analysis, explain how ecosystems have changed during the last 40,000 years, changed and identify the factor that caused these changes.

D. Based on the correlation between Earth’s temperature and the concentration of CO2 in the atmosphere, predict what will happen to animal populations in the future.

Answers

Answer:

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24. New crust (oceanic plate) is formed at (4 points)
transform plate boundaries.
subduction boundaries.
O collision boundaries.
O divergent plate boundaries.

Answers

collision boundaries

The word transcribe means 'to write out' and the word translate means 'to express in a different language'. Review the meanings of transcription and translation in protein synthesis. How do the technical meanings of these words relate to meanings of the words in ordinary language.

Answers

The word transcribe means 'to pass the code from DNA to RNA', whereas the word translate means 'change from mRNA to protein', which is a different language.

What is the genetic code?

The genetic code is a series of instructions that indicate how to synthesize proteins from a given gene sequence.

During transcription, the DNA gene sequence is transcribed into a messenger RNA (mRNA).

During translation, triplets of nucleotides or codons in mRNA determine specific amino acids in the growing protein sequence.

In conclusion, the word transcribe means 'to pass the code from DNA to RNA', whereas the word translate means 'change from mRNA to protein', which is a different language.

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Which of the following is the disadvantage of sexual reproduction?
A. Formation of new characteristics
B. Increased diversity of the species
C. More survival rates
D. Mate selection

Answers

Answer:

I think that it is mate selection though not sure

Yeah I think the answer is d

Which observation helped scientists determine the age of the universe?
A. All stars and galaxies are moving closer together at the same rate.
B. All stars and galaxies are moving away from Earth at the same
rate.
OC. The farther away a star or galaxy is, the more slowly it is moving
away from us.
о D. The farther away a star or galaxy is, the more quickly it is moving
away from us.

Answers

A. all stars and galaxies are moving closer together at the same rate

Which of these describes ATP?

A. the site of photosynthesis
B. genetic material
C. energy storage
D. cell waste

Answers

Answer:

C

Explanation:

ATP has to do with energy so the correct answer would be energy storage.

The one that describes ATP is energy storage. The correct option is C.

What is ATP?

A chemical that is a part of all living cells and gives energy to a variety of metabolic processes, including the production of RNA.

In patients with advanced solid tumors, the effects of laboratory-produced ATP on weight loss and muscle strength are being investigated. Likewise known as adenosine triphosphate.

The principal energy source for critical biological processes such muscular contraction, nerve impulse transmission, and protein synthesis is ATP generated in mitochondria.

For example, large levels of ATP signal that the cell has enough ATP and does not need to produce any more through cellular respiration. In this instance, a product "feeds back" to block its pathway, which is a form of feedback inhibition.

Thus, the correct option is C.

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what would happen if glycolsis could not happen in a cell

Answers

Answer:

The cell would die.

Explanation:

If glycolysis is interrupted, these cells lose their ability to maintain their sodium-potassium pumps, and eventually, they die. The last step in glycolysis will not occur if pyruvate kinase, the enzyme that catalyzes the formation of pyruvate, is not available in sufficient quantities.

Which statement best describes this eruption?

Its magma is high in silica.
Its magma has low viscosity.
Its gases are released in rapid bursts.
Its lava came from an explosive eruption.

Answers

The statement that best describes eruption is the gases are released in rapid bursts. That is option C.

What is a volcanic eruption?

A volcanic eruption is defined as the rapid release of the earth crust contents which contain gases, lava and ash.

These are formed when the tectonic plates move over each other in the earth crust.

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Answer:

c

Explanation:

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X= ABC+ AB+ ABC Simplify followings At the beginning of a snowstorm, Amadou had 2 inches of snow on his lawn. The snow then began to fall at a constant rate of 0.5 inches per hour. Assuming no snow was melting, how much snow would Amadou have on his lawn 4 hours after the snow began to fall? How much snow would Amadou have on his lawn after tt hours of snow falling Which of the following is NOT true about steroid hormones?Select one:A. All of the choices are true.B. They bind on cell membrane receptors.C. The cannot be made in advance.D. They have a long half-life.E. They are derived from cholesterol. *Physiology* Read Paragraph 4 from the article.In fact, diseases caused by smoke from open fires and stoves claim 4.3 million lives every year. That's more than AIDS, malaria, and tuberculosis combined.Which idea does this paragraph develop?People must determine why diseases caused by smoke and open fires claim so many lives each year.AIDS, malaria, and tuberculosis are three serious concerns in developing countries.The effects of using cookstoves are much more deadly than people may realize.Providing clean cookstoves to people in developing countries will reduce the impact of AIDS, malaria, and tuberculosis. The ""invisible hand"" works to promote general well-being in the economy primarily through:. Help me out please. The events "male and "buys lunch are not independent becauseP(buys lunch | male) = P(male) = 0.4.P(male | buys lunch) = P(male) = 0.3.P(buys lunch | male) = 0.3 and P(male) = 0.4.P(male | buys lunch) = 0.4 and P(male) = 0.3. PLEASEEEE HELPPPPWhich phrase most closely matches the meaning of the word pleasantries in this excerpt from Susan Glaspells Trifles?COUNTY ATTORNEY: (as one turning from serious things to little pleasantries) Well ladies, have you decided whether she was going to quilt it or knot it?A. tea cakesB. trivial talkC. foolish actionsD. childish behavior when two statements on a particular subject is correct it is called? whats the answer 2 1/3 x 1 2/5 The function y = f(x) is graphed below. What is the average rate of change of thefunction f(x) on the interval -3 x -1? Retell the story of how the moon formed. integrate as many of the moon's features into the story as possible. if n 18 = find n 5. Which of the following linear equations is expressed in slope-intercept form.2y = 8x - 1x = 2y + 3y = 4x - 22x + 3y = 6 Step 3: Now multiply the values to get 14,918,904,000. That is almost 15 billion passwords.That is a lot of passwords! How many passwords would the website have if users were allowed toreuse the letters and numbers? (Enter the number of successful outcomes in each of the blanksbelow. Let the first six spaces represent letters and the last two spaces represent numbers) 2x + 5y = 17 6x - 5y = -9 r,u,t,s are positive RXS=15SXT=3TXV=7RXV=?? Please SHOW THE WORK. How many miles are in 10 kilometers? Drag the tiles to the correct boxes to complete the pairs.Match the factors affecting genetic diversity with the examples.m. All rights reserved.habitat fragmentationpollutionexploitationsewage from cities dumped into verssections of large forests cut down for resourcesBurmese pythons Infesting the Evergladesrhinos Indiscriminately killed for their horns O GEinvasive species101N Use the Pythagorean Theorem to find the length of the leg in the triangle shown below.The figure shows a right triangle with one leg marked 12. The hypotenuse is marked 15.