CELL DIVISON

Question 1

CELL CONTINUITY MEANS

Answer 1

that cells develop from existing cells.

Question 2

When a new cell forms it goes through three phases which are :

Answer 2

Produce materials it needs.

Synthesis materials it needs.

Grows larger and reproduces to from new cells.

Question 3

CHROMOSOMES are

Answer 3

Coiled threads made up of DNA

Question 4

Chromosomes contain

Answer 4

GENES and PROTEIN

Question 5

CHROMATIN IS

Answer 5

Chromosomes in an elongated from.

Question 6

What is a gene ??

Answer 6

A gene is a section of DNA that controls instructions for the formation of a protein.

Question 7

Proteins produced by genes are

Answer 7

ENZYMES

Question 8

All genes in an organism make up its

Answer 8

GENOME

Question 9

Genes control features such as

Answer 9

eye colour hair colour shape of face

Question 10

Genes are units of

Answer 10

Inheritance

Question 11

A haploid cell (n)

Answer 11

Has one set of chromosomes

symbolised by ‘n’ and number of

chromosomes in the cell given as n=2 or n=3

Question 12

A diploid cell (2n)

Answer 12

Has two sets of chromosomes

Symbolised as 2n and number on chromosomes in the cell given as 2n=4 etc

Question 13

The diploid number for human is

2n =

___ from mother ____ from father

Answer 13

2n = 46

23 father and 23 mother