cells

Question 1

protoplasm

Answer 1

living matter

Question 2

a cell consists of

Answer 2

1. nucleus
2. groundplasm and cell membrane (CYTOPLASYM)
   3.

Question 3

inorganic components in a cell

Answer 3

1. water
2. gases
3. mineral salts

Question 4

organic components in a cell

Answer 4

1. proteins
2. carbohydrates
3. lipids
4. nucleic acids

Question 5

water is a solvent making different solutions

name the 4 solutions

Answer 5

1. true solution: homeogenous e.g. salt, sugar, gases
2. suspension: heterogenous e.g. organelle in groundplasm
3. emulsion: both lipid e.g oil
4. collodial: in middle e.g proteins

Question 6

osmosis

Answer 6

movement of water from a higher concentration to a lower concentration

Question 7

cell wall consists of

Answer 7

cellulose fibres

Question 8

function of a cell wall

Answer 8

• lend support to plant cells
• offers as protection against mechanical injury to plant cell

Question 9

plasmodesmata

Answer 9

thin, cytoplasmic threads that reach through the cell wall

Question 10

cell membrane

Answer 10

encloses the cell contents

Question 11

function of the celll membrane

Answer 11

• encloses its contents
• controls everything that enter or leaves it
• forms an important part of thr cellular immunity system

Question 12

mitochondria

Answer 12

power station of the cell which are responsible for cellular respiration

Question 13

function of mitochondria

Answer 13

• contains DNA which is the genetic history of a person
• produces energy for the cells

Question 14

nucleus

Answer 14

the structure of the cell that consists of chromosomes

Question 15

functions of the nucleus

Answer 15

• controls the cells metabolism
• differentiation and speciallisation of cells
• transfer of hereditary information
• reproduction of cells/organisms