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
8090 [49]
3 years ago
8

Explain the difference between independent variables, dependent variables, and control variables.

Biology
1 answer:
IgorC [24]3 years ago
3 0

Answer:

Independent: Purposely altered

Dependent: Changes with respect to the independent being altered

Controlled: Never changes

Explanation:

An independent variable is a variable in which does not rely on other pieces/variables of an experiment to assume a value. In other words, it does not change when other variables change. However, it can be changed intentionally by the scientist.

A dependent variable is a variable in which its change in value relies on other pieces/variables of an experiment to assume a value. So, if the indeoendent variable is changed, the dependent variable will change as well. The opposite is not true though - if the dependent variable changes (for whatever reason), the independent variable hasn't necessarily been changed.

A controlled variable is a variable that stays CONSTANT throughout an experiment. It is never changed, and nothing will change it. An example of a control variable is the number of participants in a study: no more participants are being added, and no participants are being removed. The number of participants remains STATIC throughout the study.

You might be interested in
What can you learn from your models that you cannot by looking at structural formulas
fgiga [73]
<span>Think of each amino acid like a different letter, there are only 26 letters but yet millions of words, it works the same sort of way. </span>
8 0
3 years ago
Read 2 more answers
How photosynthesis happen with explanation
sdas [7]

Answer: During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose

Explanation:

7 0
2 years ago
Read 2 more answers
If polar is positive and non-polar is negative then why can’t a polar molecule pass through the non-polar phospholipid membrane
Ierofanga [76]

Answer:

Because of the chemical and structural nature of the phospholipid lipid by layer the lipid soluble molecule can just pass the lipid membrane and some small molecules can also pass freely.

Explanation:

as we know that the homeostasis is an important process for a  living cell to maintain it self so for the the exchange of materials between the external and internal environment is must so for that it exchange material with the outside environment of the cell.as the cell membrane is semipermeable(mean allow some molecule to pass(lipid soluble) and not others(lipid non soluble) to pass through the membrane.the cell membrane is selectively permeable due to its nature and chemical composition the chemical composition is lipid and  phosphate and glycerol(head) with fatty acid that may b saturated or unsaturated(tail).so finally all those molecule which are polar can not pass through the membrane and  non polar can pass the membrane.The size of the molecule is also a factor on which the permeability depends.

3 0
3 years ago
The materials of the crust have less mass than materials deeper in the earth.<br><br> True<br> False
mezya [45]

Answer:

True

Explanation:

The crust makes up less than 1% of earths mass.

5 0
2 years ago
A response that is uniquely directed against pathogenic bordetella pertussis would involve what component?
xxMikexx [17]

Answer:

Antibodies

Explanation:

Bordetella pertussis is an obligate human pathogen and is the etiological agent of whooping cough. It is known to be an opportunistic organism.

The pathogenic mechanism of Bordetella pertussis is also known as virulence factor. These virulence factors are known to include adhesins such as filamentous haemagglutinin, fimbriae and pertactin, which allow B. pertussis to bind to ciliated epithelial cells in the upper respiratory tract.

It is known to be the agent of whooping cough, a highly contagious respiratory disease, dramatic for infants and also for elderly and pregnant women.

In this case, the antibodies will be the response that is uniquely directed against the organism. It is said earlier that this organism is an opportunistic one, this means that it causes infection when the immunity is down. So, when the immunity is empowered , it will definitely fight against the organism

3 0
2 years ago
Other questions:
  • True or false: <br><br> Mollusks are more closely related to roundworms than to annelids.
    5·1 answer
  • What is the pupil of the eye? select one:
    9·1 answer
  • Which of the following genotype(s) would be considered 'purebred'
    5·1 answer
  • Please help with biology ASAP
    10·1 answer
  • Plants are used for _____.
    11·1 answer
  • What do phospholipids form a bilayer in water ?
    8·2 answers
  • Often, the second part of a scientific name is (1 point)
    14·1 answer
  • The economic term for the money that is received from the sale of goods and services.
    5·2 answers
  • Name 3 reasons why glucose is needed
    14·1 answer
  • Abnormally high pressure within the skull is known​ as:
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!