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Nimfa-mama [501]
3 years ago
5

What is the function of the cell membrane

Biology
2 answers:
son4ous [18]3 years ago
7 0

Answer:

The cell membrane keeps the cell together and protects it at the same time. It also helps give it shape, gives it structure to fit with other cells, and keeps foreign substances out/let certain substances in.

Explanation:

Hope this helps:)

PilotLPTM [1.2K]3 years ago
3 0

The cell membrane protects the cell from unwanted things coming inside. It is a barrier.  Composed of a phospholipid bilayer with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells.

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the cell nucleus

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Name the 2 stages of photosynthesis
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Which one is NOT one of the properties of water?
marysya [2.9K]

Answer:

a. the frozen form is more dense than the liquid form

Explanation:

The remaining properties are exhibited by water and are described as follows.

b. the frozen form is less dense than the liquid form

1. Water freezes to form ice.

2. When ice is put in water, ice starts floating in water and is visible.

3. If the density of ice was greater than water, ice would have got sunk and go downwards in the water body.

4. Hence, ice which is frozen form of water, has less density than water.

c. water is a solvent

1. The solvency is defined as the ability of a liquid to dissolve a substance.

2. Water is called the universal solvent. This means water can dissolve almost all types of substances.

3. Water is a polar solvent. The polar water molecules have the ability to break down both ionic and covalent bonds.

d. water has a high heat capacity

1. This is defined as the amount of heat needed by 1 gram of a substance so that its temperature is changed by 1 degree centigrade. The heat can either be gained or lost for the temperature to change.

2. The heat required by 1 gram of water to either increase or decrease the temperature of water is called the heat capacity of water.

e. water has a high heat of evaporation

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2. The heat required to convert 1 gram of water into vapours is called the heat of evaporation of water.

3. 1 g of water when heated at 25 centigrade needs 580 calories of heat to convert into gas.

All the above properties of water show the importance of water for life.

7 0
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