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rusak2 [61]
3 years ago
7

Please help, will be greatful!

Biology
1 answer:
Step2247 [10]3 years ago
3 0

Answer:

B

Explanation:

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What is a major difference between facilitated diffusion and active transport?
siniylev [52]

Answer:

The correct answer is Active transport moves substances against the concentration gradient.

Explanation:

The principle difference between active transport and facilitated diffusion is that active transport helps in the movement of various substances in the uphill direction which means against the concentration gradient.

    In simple words active transport helps in the movement of substance from the region of low concentration to a region of high concentration.

On the other hand during facilitated diffusion substances move along their concentration gradient which means from the high concentration region to the region of low concentration until the concentration of both sides become same.

7 0
3 years ago
How do I identify controls, independent and dependent variables
frosja888 [35]

Answer:

what you change vs what you are testing

Explanation:

The independent variable is the variable that you change. For example, if we were growing plants and wanted to see if more sun made them grow higher, you would change the amount of sun that each plant is exposed to.

The dependent variable is what you measure. This depends on the independent variable. So, in our plant experiment, the height of the plant is the dependent variable.

Control. The control is what stays the same. So in our plant experiment, the amount of water, type of plant, type of soil, and all of these things would stay the same to insure that the results are equal.

You affect the independent variable and the control and you test the dependent variable.

5 0
3 years ago
The rate of a chemical reaction is dependent upon which of the following?
Rus_ich [418]

Answer:

B

Explanation:

7 0
3 years ago
PLEASE HELP
natima [27]
Before the marble starts rolling, it is potential energy. Once it is rolling, it is kinetic energy. You know it stays the same because the marble probably would not be rolling if it weren't. All that's happening is that the ball is rolling faster because of gravity.


<span>Gravity assists the marble, leading to conservation of energy. The stored energy is release as momentum, the output of energy is constant.</span>
6 0
3 years ago
Please help will mark brainliest
STatiana [176]
A

A haploid cell formed in the male seminiferous tubules

The reproductive tissues of male and female humans develop similarly in utero until a low level of the hormone testosterone is released from male gonads. Testosterone causes the undeveloped tissues to differentiate into male sexual organs. Primitive gonads become testes; other tissues produce a penis and scrotum in males.
5 0
2 years ago
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