Cell Structure and Function

Question 1

What is another name for the cell membrane?

Answer 1

surface membrane or the plasma membrane

Question 2

The cell membrane is….

Answer 2

partially permeable/selectively permeable- allows some substances to pass through

Question 3

What does the cell membrane do?

Answer 3

Forms a barrier between the cell and the environment. Controls what enters and leaves the cell.

Question 4

The cell wall is…..

Answer 4

Fully permeable- allows most substances to past through

Question 5

What is the cell wall made of?

Answer 5

cellulose- very rigid and strong

Question 6

What is the function of the cell wall?

Answer 6

To support and protect the cell.
Give it a fixed shape
Prevent the cell from bursting if it absorbs too much water.

Question 7

What is the cytoplasm?

Answer 7

Its a clear jelly substance
contains 70% water and dissolved substances

Question 8

What is the function of the cytoplasm?

Answer 8

Supports the organelles
A site of chemical reactions for eg respiration

Question 9

What does the nucleus do?

Answer 9

hold chromosomes which contains genetic information.
Controls all cell activity
controls how the cell develop

Question 10

What is another name for the mitochondria?

Answer 10

The power house of the cell.

Question 11

What happens in the mitochondria?

Answer 11

Respiration takes place.
when respiration takes place carbon dioxide is released and water and energy is produced.

Question 12

What is the vacuole?

Answer 12

A space in the cell surrounded by a membrane containing a solution.

Question 13

How is the vacuole used in the plant cell?

Answer 13

it contains a large permanent vacuole.
contains a solution of sugars and other substances called the cell sap.
Supports the cell when turgid
Stores food and cell waste.

Question 14

How is the vacuole used in and animal cell?

Answer 14

it contains small temporary vacuoles.
used as a vehicle to transport substances.
may contain food ,water and waste

Question 15

What is a cell?

Answer 15

cells are basic building blocks of living things. Can be seen only with a mircoscope therefore described ad microscopic

Question 16

What is unicellular and multicellular? Give examples

Answer 16

unicellular- being composed of a single cell, eg. bacteria,yeast
multicellular- being composed of many cells eg plants and animals

Question 17

What does chloroplast contain?

Answer 17

Its contains a green pigment called chlorophyll which is used to absorb sunlight during photosynthesis.
Contains starch grains which are made during photosynthesis.

Question 18

What is glycogen granules?

Answer 18

glucose is stored in the animal cell in the form of glycogen granules.

Question 19

What are the similarities between the animal and plant cell?

Answer 19

They both have:
cell membrane
nucleus
cytoplasm
mitochondria

Question 20

What are the differences between the animal and plant cell?

Answer 20

The plant cell has a cell wall while the animal cell doesn’t.
The plant cell has a large permanent vacuole while the animal cell has small temporary vacuoles.
The plane cell has a fixed shape while the animal cell has no fixed shape.
plant cells store food in starch grains while animal cells stores food in glycogen granules.
Plant cells contains chloroplasts and chlorophyll while the animal cell doesn’t.