Revision

Question 1

What do all cells contain?

Answer 1

Chromosomes

Question 2

A small packet of information is called…

Answer 2

Genes

Question 3

How many chromosomes does your body contain?

Answer 3

46

Question 4

How many pairs of chromosomes does your body contain?

Answer 4

23

Question 5

Body cells divided into a series of stages known as the..?

Answer 5

Cell cycle

Question 6

What does mitosis produce?

Answer 6

Two identical cells

Question 7

Why is mitosis important?

Answer 7

Provides growth, development

Question 8

What happens in stage one of the cell cycle?

Answer 8

Longest stage in the cell cycle, cells grow bigger, carries normal cell activities

Question 9

What happens in stage two of the cell cycle?

Answer 9

One set of chromosomes is pulled to each end of the dividing cell, nucleus divides

Question 10

What happens in stage three of the cell cycle?

Answer 10

The stage during which the cytoplasm and the cell membrane also divide to form two identical daughter cells.

Question 11

The stem cell divides and becomes a hollow ball of cells called the..?

Answer 11

Embryo

Question 12

Your bone marrow is a good source of…?

Answer 12

Adult stem cells

Question 13

The inner cells of the embryo balls are called the..?

Answer 13

Embryonic stem cells

Question 14

Many embryonic stem cells come from..?

Answer 14

Aborted embryos

Question 15

Cells becoming specialised to do a specific job is called…?

Answer 15

Differentiation

Question 16

The length of the digestive system is…?

Answer 16

6 and 9 metres long.

Question 17

The food you take in and eat is made up of…?

Answer 17

Large insoluble molecules

Question 18

What do enzymes do?

Answer 18

Enzymes break down the large insoluble food molecules into smaller, soluble ones.

Question 19

DNA is contained in….

Answer 19

Chromosomes, which are found in the nucleus of most cells

Question 20

Chromosomes consist of…?

Answer 20

Long strands of a substance called DNA.

Question 21

What do all cells contain?

Answer 21

Chromosomes

Question 22

A small packet of information is called…

Answer 22

Genes

Question 23

How many chromosomes does your body contain?

Answer 23

46

Question 24

How many pairs of chromosomes does your body contain?

Answer 24

23

Question 25

Body cells divided into a series of stages known as the..?

Answer 25

Cell cycle

Question 26

What does mitosis produce?

Answer 26

Two identical cells

Question 27

Why is mitosis important?

Answer 27

Provides growth, development

Question 28

What happens in stage one of the cell cycle?

Answer 28

Longest stage in the cell cycle, cells grow bigger, carries normal cell activities

Question 29

What happens in stage two of the cell cycle?

Answer 29

One set of chromosomes is pulled to each end of the dividing cell, nucleus divides

Question 30

What happens in stage three of the cell cycle?

Answer 30

The stage during which the cytoplasm and the cell membrane also divide to form two identical daughter cells.

Question 31

The stem cell divides and becomes a hollow ball of cells called the..?

Answer 31

Embryo

Question 32

Your bone marrow is a good source of...?

Answer 32

Adult stem cells

Question 33

The inner cells of the embryo balls are called the..?

Answer 33

Embryonic stem cells

Question 34

Many embryonic stem cells come from..?

Answer 34

Aborted embryos

Question 35

Cells becoming specialised to do a specific job is called...?

Answer 35

Differentiation

Question 36

Chromosomes are found in...?

Answer 36

The nucleus of most cells

Question 37

What colour is the blood plasma?

Answer 37

Yellow (liquid)

Question 38

Where does the blood plasma travel in the body?

Answer 38

Through the blood cell, other substances around the body

Question 39

What does the red blood cell pick up? (In the body)

Answer 39

They pick up oxygen from the air, put it into the lungs

Question 40

What do red blood cells look like?

Answer 40

Round, slightly dense middle

Question 41

What do white blood cells form?

Answer 41

They form antibiotics against microorganisms.

Question 42

What do platelets do around the body?

Answer 42

Help the blood to clot around the womb

Question 43

What do platelets look like?

Answer 43

Red, with ends sticking out of them.

Question 44

What colour is the blood plasma?

Answer 44

Yellow (liquid)

Question 45

Where does the blood plasma travel in the body?

Answer 45

Through the blood cell, other substances around the body

Question 46

What does the red blood cell pick up? (In the body)

Answer 46

They pick up oxygen from the air, put it into the lungs

Question 47

What do red blood cells look like?

Answer 47

Round, slightly dense middle

Question 48

What do white blood cells form?

Answer 48

They form antibiotics against microorganisms.

Question 49

What do platelets do around the body?

Answer 49

Help the blood to clot around the womb

Question 50

What do platelets look like?

Answer 50

Red, with ends sticking out of them.