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olchik [2.2K]
3 years ago
11

What is the purpose of using multiple control groups in an experiment

Biology
2 answers:
mamaluj [8]3 years ago
6 0

Answer:

The independent variable is "controlled" or held constant in the control group. A single experiment may include multiple experimental groups, which may all be compared against the control group. The purpose of having a control is to rule out other factors which may influence the results of an experiment.

Explanation:

Mariulka [41]3 years ago
5 0

Answer:

Explanation:

A control group is a standard group which is used for the purpose of the experiment. It does not receive any manual treatment by the experimenter. Instead it is kept as a standard for comparison of the other variables.

The multiple control groups are used in the experiment so as to increase the accuracy, consistency and reliability of the results. As if one control group contains contaminants it may produce errors in the experiment. To avoid error and enhance error and increase accuracy multiple control groups are used.

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The food additive red dye no. 2 is known to cause cancer. as such, it is a __________.
vovangra [49]
As such, it is a Carcinogen which is basically just a substance that is known to cause cancer.

Hope this helped :)
7 0
3 years ago
The expression of a trait is directly dependent on the
Lemur [1.5K]

Answer: B

Explanation:

The question wants to know what the expression is directly dependent on.

The sequence of genetic expression goes like this:

  DNA -> RNA -> protein

If we want to know the root cause of expression, we must look at the DNA, not the RNA or protein, because DNA determines the RNA and protein expression.

 

The  Shape of subunits in DNA -> Sequence of bases coded for by the ribosome with RNA -> Arrangement of amino acids in the protein synthesized.

Why not C: Number of chromosomes present isn't a factor, because most humans, barring those with a genetic disorder, have 23.

5 0
3 years ago
Read 2 more answers
what is the resistance of a car light bulb that conducts 0.025 A current when connected to a 12 V car accumulator? Is the curren
tangare [24]

Answer:

R = 480 Ohm

Yes, the current is steady since the power supply is a constant 12V (comming from the battery).

Explanation:

U=I*R

R = U / I

U = 12 V

I = 0.025 A

R = 12 / 0.025

R = 480 Ohm

6 0
3 years ago
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1) A plant gets 628.3 kcal of energy from the sun, what energy is left at the quartenary consumer level?
Jobisdone [24]

1. The energy left in the Quaternary consumer level is 0.06283 kcal.

2. 0.65 units of energy  is still available at the tertiary consumer level.

<u>Explanation:</u>

Energy flow in an ecosystem obeys the ten percentage law According to which ten percentage of energy from a trophic level gets transferred to the next trophic level. In the given question plants belong to the trophic level , producers  and it transfers 10 percentage of its energy to the primary consumer level.

In the question 1 the energy that the producers have is 628.3 kcal. Ten percentage of this i.e 62.83 kcal gets transferred to the primary consumer level. Ten percent of that which is 6.283 kcal gets transferred to the secondary consumer level.  Ten percent of 6.283 kcal i.e  0.6283 kcal energy is transferred to the tertiary consumer level.

Thus the Quaternary consumer level gets ten percentage of 0.6283 kcal i.e 0.06283 kcal. In question B the initial energy at the primary level is 650 units. Ten percentage of 650 i.e 65 units reach the primary consumer  level. Ten percentage of this 65 units then reaches the secondary consumer level. Thus the secondary consumer level has ten percent of 65 i.e 6.5 units of energy.  

So the energy that reaches the tertiary consumer level is ten percentage of 6.5 i.e 0.65 units.

5 0
3 years ago
What is the difference between osmosis and diffusion​
PilotLPTM [1.2K]

Answer:

Osmosis is the movement of molecules from a region of lower concentration to a region of higher concentration through a semi-permeable membrane

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Diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration until the molecules are evenly distributed

5 0
2 years ago
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