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
Leno4ka [110]
3 years ago
6

What is the purpose of having a control and a variable in an experiment?

Biology
1 answer:
11Alexandr11 [23.1K]3 years ago
7 0

a control helps to increase the reliability of the results. it allows a scientist to compare it to other group(s) in an experiment. if a scientist notices a significant different btwn the control and the other groups, he can logically conclude that the independent variable has an impact on the dependent variable.

a variable is any factor, trait or condition that can exist in differing amounts or types. there are usually three tpes of variables in experiments: the independent, dependent and contolled. the independent variable variable is the one that is changed by the scientists to figure it's affect on something.

You might be interested in
1 out of every 5 pounds of an average adult's body weight is fat. what percent of body weight is fat?
podryga [215]
1 out of 5 is 1/5.
Divide that and you get .20, which is 20%, so that is your answer, 20% fat.
5 0
3 years ago
A scientist is comparing the outer structure of an onion cell, structure X, to the outer structure of a human skin cell, structu
hammer [34]

Answer:

Structure X is only found in plant cells, and structure Y is found in plant and animal cells.  

Explanation:

The structure found on the outside of the onion cell is the cell wall, which is specific to plants. The structure found on the outside of the skin cell is the cell membrane, which is found on all cells.

Structure X is not living, and structure Y is living.  - this is false, both animal and plant cells are living.

Structure X can be found in some human cells, and structure Y can be found in some plant cells.  - this is false, the opposite is true.

Structure X is only found in plant cells, and structure Y is found in plant and animal cells.  - this is true structure X is the plant cell wall, and structure Y is the cell membrane

Structure X is semipermeable, and structure Y is selectively permeable. Semi-permeable and selectively permeable are essentially the same thing - it means the barrier allows some substances to pass through but not others.

4 0
3 years ago
Read 2 more answers
Which statement accurately describes a relationship between two parts of the universe?
Veseljchak [2.6K]

The statement '(a) there are billions of galaxies in a galaxy cluster' accurately describes a relationship between two parts of the universe.

<h3>What is the solar system?</h3>

The solar system can be defined as a group of billions of galaxies that form a cluster due to gravitational forces that maintain all these celestial bodies linked together. This system contain our Sun.

In conclusion, the statement '(a) there are billions of galaxies in a galaxy cluster' accurately describes a relationship between two parts of the universe.

Learn more about galaxy clusters here:

brainly.com/question/955851

#SPJ1

8 0
1 year ago
When eaten, nearly 90% of our dietary calories from fat are in the form of?
Alecsey [184]
Foods that people like
5 0
3 years ago
How can i create a dam that still allows fish to swim through and not lose their habitats?
Drupady [299]

Answer:

A dam that could allow fish to still pass through is a fishway/fish pass its a "fish ladder" that is structured on or around artificial or natural barriers to allow for fishes natural migration and the movement for potamodromous species.

6 0
2 years ago
Other questions:
  • What prevents sperm cells from traveling the entire distance to the egg?
    11·1 answer
  • According to the food chain, trout are a major source of food for bears. What would happen to the trout population if the bear p
    11·1 answer
  • (20 POINTS) What is the difference between haploid and diploid cells, and where are they important exactly?
    9·1 answer
  • Describe the three chemical changes that occur during the light-dependent reactions.
    14·2 answers
  • Which of these changes occurs near the end of the third trimester of fetal
    9·1 answer
  • a cell was poisoned by a substance that destroyed all of its mitochondria. which cell transport processes would be able to still
    9·1 answer
  • What role do maple trees play in a forest food web?
    6·1 answer
  • If a population of bacteria were all exactly the same, could the process of natural selection act on that population
    6·1 answer
  • Smoking reduces the surfactant layer in the alveoli. This would cause which of the following to occur? (2 points)
    6·1 answer
  • Cells are sometimes called
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!