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AlekseyPX
3 years ago
5

Why a molecule may not be to pass into or out of a cell

Biology
1 answer:
kari74 [83]3 years ago
7 0
All cells have selectively permeable membranes, which means that they let important molecules inside the cell while leaving other ones outside. Important molecules go inside the cell by the process of diffusion or osmosis. 
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If a cell contains 95% water and is put into a beaker with 100% water, what will happen
Kisachek [45]

Answer: The quantity of water in the beaker will reduce. The cell will increase size.

Explanation: There is difference in water concentration between the cell and the beaker, therefore water will move from the beaker into the cell causing the cell to expand and the quantity of water in the beaker to decrease. There will be movement of water molecules from an area of high water concentration (beaker) to an area of low water concentration (the cell) through a selectively permeable cell membrane. The aim of this is to create an equilibrium between the water concentration in the cell and that in the beaker.

4 0
4 years ago
Whar is the control group
Oksana_A [137]

Answer:

Control group remains unchanged.

Explanation:

For example if you are trying to see if watering plants with Pepsi is better.

Your experiment plant would get watered with Pepsi.

Your control plant would get watered with water. (Control groups serve as a reference to compare in the experiment)

3 0
4 years ago
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A eukaryote gene typically has all of the following EXCEPT:
kupik [55]

the answer would be d. a start base triplet

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6 0
3 years ago
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How do scorpio reproduce
krok68 [10]

Answer:

Unlike most nonmammalian animals, scorpions are viviparous, giving birth to live young instead of laying eggs. Once fertilized, the eggs are retained in the female's body, where the embryos are nourished in utero for periods varying from several months to a year.

Explanation:

6 0
3 years ago
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Why must the quality and quantity of DNA in cells remain the same from generation to generation?
timama [110]
<h2>The quality and quantity of DNA in cells remain the same from generation to generation.</h2>

Explanation:

  • As all organisms depend on their DNA to live, and any changes in the amount or quality of DNA. It will lead to mutations or death of the organism.
  • If DNA is changed then it will be difficult for the chromosomes to match up and offspring will not be produced.
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3 0
3 years ago
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