1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kotykmax [81]
3 years ago
10

An experimenter wanted to test the effects of cigarette smoking on rats. She infused the cages of 50 rats with cigarette smoke a

nd the cages of another 50 rats with pure, clean air. The rats that received the clean air were the ____.​
Biology
1 answer:
Feliz [49]3 years ago
4 0

Answer:

Control group

Explanation:

A control group is<em> a group of individuals in an experiment where the independent variable being tested (the exposition to cigarette smoke in this case) can't influence the results.</em> This control group will be then compared to the experimental group (exposed to the smoke) to see the effect of the variable evaluated.

I hope you find this information usefula nd interesting! Good luck!

You might be interested in
Name me 20 sea creatures that were just descovered 2017
tatiyna
Accio crab, Ancient otter, Skywalker gibbon Thats all I know anyways hope this helps 

7 0
3 years ago
Is there a difference between plant &amp; animal cells?
Mandarinka [93]
Hope this helps you.

3 0
3 years ago
Read 2 more answers
The rate of kidney filtrate formation would normally be dependent upon all of the following factors except __________.
Wewaii [24]

Answer:

The correct option is BLOOD CALCIUM LEVEL.

Explanation:

The options attached to this question are given below:

A. Filtration membrane integrity

B. Systemic blood pressure

C. Blood calcium level

D. Renal artery/arteriole diameters

Kidney is an excretory organ, which functions by filtering waste products out of the blood. The rate at which the kidneys filter the blood depend on some factors; such factors include: water intake, systemic blood pressure, vasoconstriction, dehydration, filtration membrane integrity etc.

Blood calcium level does not have any effect on the rate at which the kidneys filter the blood.

7 0
2 years ago
In a separate location, take notes from the sources you have identified. The notes will provide details for your paper. While ta
bezimeni [28]

Answer:

- The american male BullDog can weigh up to 75-100 pounds while the female bulldog can weigh up too 60 to 80 pounds.

- The Life expectancy of a american Bulldog can be up 10-12 years.

- Generally the American Bulldog skin is 52 to 70 centimeters, but it can go overboard.

- The American Bulldog barking can be up 80-90 decibels.

Explanation:

3 0
3 years ago
What protein is responsible for the initial step in unwinding the DNA helix during replication of the bacterial chromosome?
maw [93]

Answer:

Proteins play a fundamental role for life and are the most versatile and diverse biomolecules. They are essential for the growth of the organism and perform a huge amount of different functions.

The passage of DNA to proteins begins with the step of transforming genetic information into an intermediary between DNA and protein. This intermediary is called messenger RNA (mRNA). The difference between DNA and mRNA is that the second corresponds to a very small fraction of all DNA, consists of a single chain (it is no longer a “zipper” but a strand), and that Thymine (T) is replaced by the Uracil (U). This fraction corresponds to the stretch of DNA that contains the sequence necessary to ultimately synthesize the protein.

8 0
2 years ago
Read 2 more answers
Other questions:
  • A testable hypothesis could be formed from which question?
    16·2 answers
  • Phosphatidic acid is a precursor for the lipid class(es):
    10·1 answer
  • Why is it important that our frog ringer solution, that we bathed our nerve in, contains calcium?
    10·2 answers
  • In "The Wisdom of Solomon," why does the baby's true mother agree to give up her child at one point in the story? A. She believe
    9·1 answer
  • An ecologist studying plants in the desert performed the following experiment. She staked out two identical plots, which include
    9·1 answer
  • The salinity of ocean water is due to high concentrations of:
    12·1 answer
  • The bases of DNA molecules are paired together by_____ bonds along the axis of the molecule.
    8·1 answer
  • Part 1: Incomplete Dominance—Predicting Flower Color in Snapdragons
    8·2 answers
  • Each month when the sun, earth, and moon are in a straight line a<br> will occur.
    7·1 answer
  • The purpose of ______ is to pass a copy of a cell's gene to cells in the next generation. The purpose of ______ is to pass the p
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!