Suppose a scientist is doing an experiment to determine the effect of an all-organic diet on the occurrence of
cancer in rats. Which of the following would be the best control group for this experiment?
A. Rats fed a standard rat diet (not organic)
B. Rats fed an all-organic diet
C. Pats fed an all-organic diet, but half the amount of normal
D. Rats that are not fed anything

Answers

Answer 1

Hmm... I'm not 100% sure but I'd say it was D.

Answer 2

Rats fed a standard rat diet (not organic) will be the best control group for this experiment. The correct option is A.

What is control group?

A control group in a scientific experiment is a group that is isolated from the rest of the laboratory activity and where the regression analysis being evaluated cannot influence the outcomes.

This isolates the independent variable's effects on the experiment and can help rule out other explanations for the experimental results.

An experimental group is made up of participants who have their independent variable manipulated in some way. These are the people who receive special treatment.

The best control group for this experiment will be rats fed a standard rat diet (not organic).

Thus, the correct option is A.

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Related Questions

Will Mark Brainiest. What are 6 physical properties of mountains and 2 chemical properties?

Answers

Answer:

Examples of chemical properties include flammability, toxicity, acidity, reactivity (many types), and heat of combustion.

Physical properties are those that can be observed without changing the identity of the substance. ... Properties that describe how a substance changes into a completely different substance are called chemical properties.

Explanation:

Flammability and corrosion/oxidation resistance are examples of chemical properties.

What subatomic particle needs energy for it to become "excited" and
contribute to the chemical reactions of photosynthesis?

Answers

Answer:

The electron

Explanation:

The electron needs to be "excited" or have sufficient amount of energy to take part in reactions for covalent bonding, ionic bonding or metallic bonding.



What substance kills Thrax (and most other pathogens)?

Answers

Answer:

Alcohol

Explanation:

Alcohol does so yeah that does work.

The digestive process begins as food is chewed in the mouth. The chewing of food is primarily conducted by the – A immune system B lymphatic system C muscular system D respiratory system

Answers

the answer is lymphatic system

Would you design cars with different masses or equal masses? Would you design your cars with high speeds or low speeds? Use Newton's Laws of motion to support your response.

Answers

Answer:

You can actually apply the same concept, obviusly you want the cars to be the same weight, and you want your cars to be not too fast, because of the same equation F=MA if the car is faster, is because it has higher acceleration, wich results in higher impact force.

Explanation:

What's the interaction of tissues and organs within the circulatory system

Answers

Answer:

The cardiovascular or circulatory system is designed to ensure the survival of all cells.

Explanation:

What roles do DNA and chromosomes play in the coding of instructions for the inheritance of traits, or joe traits passed on parents to offspring?

Answers

Answer:

I really hope this helps

DNA is the vital for all living beings. even plants. it is important for inheritance, coding for proteins and the genetic instruction guide for life and its processes. DNA holds the instructions for an organisms or each cells development and reproduction and ultimately death.

Each chromosome consists of a single, very long DNA molecule, and each gene on the chromosome is a particular segment of that DNA. the instructions for forming species characteristics are carried in DNA.

In my science class we just got done learning this so it should be correct.

which kind of electrical charge is found on a hydrogen atom of a polar water molcule?

Answers

Answer:

he two hydrogen atoms and one oxygen atom within water molecules (H2O) form polar covalent bonds. While there is no net charge to a water molecule, the polarity of water creates a slightly positive charge on hydrogen and a slightly negative charge on oxygen, contributing to water's properties of attraction

Explanation:

Where does cellular respiration take place?
mitochondria
nucleus
DNA
chloroplast​

Answers

Cellular Respiration takes place in the Mitochondria

Answer:

A. Mitochondria

Explanation:

Took the test

pls answer this
What is the main negative effect of slash and burn deforestation in rainforests?

A. Bare land warms absorbs heat and warms the surrounding air faster than forested areas.

B. The erosion of thin, fragile tropical topsoils

C. Heavy smoke in the air causes respiration problems for humans

D. A rapid increase of carbon dioxide, faster than photosynthesis can remove the CO₂

Answers

Hi the answer is d have a happy day bye

does any one know whats wrong with my foot it has been in constant pain since yesterday now i dont know if it is a sprain or what plz help im in constant pain now i can hardly walk it is the long near the big toe right in the center of the long bone conecting to my ankle plz i need to know if i need to go to doctor.

Answers

Answer:

Yes. You need to go to the doctor.

Explanation:

Your foot could be doing this because the bone itself could be bruised or else it somehow got injured or is in some other type of pain.  

What is the charge of the outside of the DNA molecule?

Answers

Answer:

It has an alternating chemical phosphate and sugar backbone, making the 'sides' of the ladder. (Deoxyribose is the name of the sugar found in the backbone of DNA.) In between the two sides of this sugar-phosphate backbone are four nitrogenous bases: adenine (A), thymine (T), cytosine (C), and guanine (G).

Explanation:

Negative charged hope this helped

A species has a better chance of surviving if it has greater variation in its
A
mutations.

B
golgi bodies.

C
mitochondria.

D
genes.

Answers

Answer:

The answer is D.

Explanation:

Answer:

d

Explanation:

Water found in an ice cap is...

A - Salt Water
B - Fresh Water

Answers

Answer: B soo sorry if im wrong!!

Explanation:

Answer:

fresh water

Explanation:

its frozen wich preserves it

Cellular respiration and photosynthesis form the basis of the __________.

Group of answer choices

A) water cycle

B) biomass

C) nitrogen cycle

D) carbon cycle

Answers

The answer is D. Carbon cycle

Two groups of scientists got different results while studying about the origin of the universe. Which of these statements is most likely true about the results of the two groups of scientists? (3 points) a They were not repeated and verified. b They provide new testable ideas to strengthen science. c They show that the ideas of both groups of scientists are invalid. d They prove that it is impossible for all scientists to accept the same theory.

Answers

Answer:

They were not repeated and verified

Explanation:

I think it’s this because if they would have rep

How would you describe the term “GMO food” to someone who’s never heard it before

Answers

Answer:

Genetically modified foods, also known as genetically engineered foods, or bioengineered foods are foods produced from organisms that have had changes introduced into their DNA using the methods of genetic engineering.

Explanation:

Answer:

GMO means grouth hormones

non GMO means no growth hormone

In an _________, dots around an element's symbol indicate the number of valence electrons in an atom.​

Answers

Answer:

Bohr Diagram

Explanation:

Is a Diagram where you put the element in the middle and rings with dots around the outside representing shells and the number of electrons. Almost always taught at middle school/High school.

Raising the temperature of a gas will increase its pressure if the volume of the gas

Answers

Answer:

raising the temperature of a gas will increase its pressure if the volume of the gas. and the number of particles are constant. the temperature and volume in a closed container of gas remain constant if the number of particles of gas is increased, the gas pressure will.

What is the function of the hydrogen ion concentration gradient?

Answers

Answer:

Notice the large difference in the number of hydrogen ions on the two sides of the membrane. This difference is a hydrogen ion, or proton, concentration gradient. The energy associated with this gradient is used to synthesize ATP from ADP and Pi. This occurs at the ATP synthase complex.

Explanation:

mention 5 reasons why animal moves

Answers

Answer:

In the search of food for their survival.

To protect themselves from their enemies.

To get a suitable temperature for their reproduction.

To get a perfect habitat to increase their survival rate.

To get more prey and a safe place.

In search of a better climate that suits their body.

HELLP ASAP

1. What are air pressure, wind, cloud cover, precipitation, and temperature called?

A. elements of climate


B. elements of weather


C. elementary aspects


D. elevation pressure

Answers

Answer:

your answer is B, it is part of the weather cycle and water cycle, give me a Brainliest if correct and have a good day:)

Explanation:

The answer would be B.

A student observes that a popcorn kernel has a hard coat. He places the kernel in a moist paper towel and observes it for several days. He notices that the coat splits and a small root emerges. He concludes that—

water outside the seed coat exerted a pushing force, breaking the seed coat


air inside the seed coat exerted a pushing force, breaking the seed.



water outside the seed coat exerted a pulling force, breaking the seed coat.



gravity exerted a pulling force on the stem, breaking the seed coat.

Answers

Answer:

d

Explanation:

got it right on the test

Can y’all help me figure out the other ones or can y’all correct my work if I messed up because I’m stuck.

Answers

Answer:

5. ee, attatched earlobes

8. Ee, free earlobes

Explanation:

Hellllpppp meeeeeeeeeee

Answers

Answer:

D.

Explanation:

Feel free to give brainliest.

Have a great day, Sleepy and Maisie. Same thing goes for everyone else.

What is one thing ATP is used for in the body?

Answers

Answer:

ATP is consumed for energy in processes including ion transport, muscle contraction, nerve impulse propagation, substrate phosphorylation, and chemical synthesis. These processes, as well as others, create a high demand for ATP

Explanation:

Hope this helped, Have a Wonderful Day!!

Help I need help on this one

Answers

Answer:

C. Chloroplasts

Explanation:

C is the answer hope this helps

Which weather patterns are caused by atmospheric pressure differences?

Answers

Answer:

Low-pressure systems are associated with clouds and precipitation that minimize temperature changes throughout the day, whereas high-pressure systems normally associate with dry weather and mostly clear skies.

Explanation:

Storms, which are severe weather conditions, develop when air pressure differences speed up air flow.

What do you mean by atmospheric pressure differences ?

It is the force that the air above a surface applies to it while gravity pulls the surface toward Earth. Weather is predicted by atmospheric pressure. There will often be clouds, wind, and precipitation when a low-pressure system enters a region. Fair, quiet weather is frequently a result of high pressure systems.

Air density variations, which are connected to temperature, are what are causing this shift in pressure. Because heated air's gas molecules move faster and further apart than cooler air's, warmer air is less dense than colder air.

Thus, various weather patterns are seen with change of atmospheric pressure.

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The fact that whales have a pelvis is which type of evolutionary evidence?

Answers

Answer:

Anatomical Evidence

Explanation:

The pelvic bones in whales are a good example of evolutionary anatomical evidence shown by vestigial evolution where whales evolved from four-legged land mammals and secondarily lost their hind legs.

Please help me confused

Answers

Best choice is 2 but not sure
I am pretty sure it is option 2?
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