Biology Summer term revision UIII

Question 1

What is a cell?

Answer 1

A cell is the simplest living organism in the body that cannot be broken down.

Question 2

What does a red blood cell do?

Answer 2

Carry oxygen around the body

Question 3

What does a sperm cell do?

Answer 3

Swims to the egg cell

Question 4

What is a tissue?

Answer 4

A tissue is a group of cells working together

Question 5

What is a system?

Answer 5

A system is made of organs working together

Question 6

Name two human organs and state their job

Answer 6

heart- pumps blood through you body, circulatory system

Stomach- where you digest food, digestive system

Lungs- They take oxygen into your body, respiratory system

Question 7

How many parts does a animal cell have?

Answer 7

4

Question 8

How many parts does a plant cell have?

Answer 8

7

Question 9

What is the function of the nucleus?

Answer 9

Contains the DNA of the cell

Question 10

What is the function of cytoplasm?

Answer 10

It is the site of chemical reactions

Question 11

What is the function cell membrane?

Answer 11

Controls what enters and leaves the cell

Question 12

What is the function of mitochondria?

Answer 12

Carries out respiration (release of energy from the cells)

Question 13

What is the function of a cell wall?

Answer 13

To provide the cell with structure made from cellulose

Question 14

What is the function of the vacuole?

Answer 14

Stores cell sap which provides the cell structure

Question 15

What is the function of chloroplast?

Answer 15

Carries out photosynthesis and contains a pigment called chlorophyll

Question 16

Which structures are found only in plant cell?

Answer 16

Chloroplast, vacuole, cell wall

Question 17

What pigment is found in the red blood cell?

Answer 17

A red pigment called haemoglobin

Question 18

What shape is the red blood cell?

Answer 18

Biconcave shape

Question 19

On a ciliated cell, what are the tiny hairs called?

Answer 19

Cilia

Question 20

What is the oviduct?

Answer 20

Moves eggs towards the uterus

Question 21

Why does the red blood cell have no nucleus?

Answer 21

So that it has a flexible shape so that it can squeeze through tiny blood vessels and to maximise its space to carry oxygen

Question 22

Why does the sperm cell have mitochondria?

Answer 22

To provide energy to swim to the egg

Question 23

What is the feature of a root hair cell?

Answer 23

Long extensions to absorb water and minerals from the soil

Question 24

What does the digestive system do?

Answer 24

Process food to get energy for cells.

Question 25

What does the respiratory system do?

Answer 25

Takes oxygen into the body

Question 26

What does the circulatory system do?

Answer 26

Sends blood around the body

Question 27

What does the excretory system do?

Answer 27

Removes waste from the body

Question 28

What does the nervous system do?

Answer 28

Sends messages around the body

Question 29

What does the skeletal system do?

Answer 29

Supports the body and helps you move, provides structure

Question 30

What does the reproductive system do?

Answer 30

How you make babies

Question 31

What are the parts in an animal cell?

Answer 31

cell membrane, nucleus mitochondria, cytoplasm

Question 32

What parts are there in plant cell?

Answer 32

cell membrane, cell wall, cytoplasm, , chloroplast, vacuole, mitochondria, nucleus

Question 33

Where are egg cells found?

Answer 33

In the ovaries

Question 34

Where are relay neurons found?

Answer 34

found within the brain and the spinal cord

Question 35

What do relay neurons do?

Answer 35

connect cells together

Question 36

What does the eyepiece do?

Answer 36

What you look through, magnifies image x10

Question 36

What does the nose piece do?

Answer 36

Rotates to allow you to choose which objective lens to use

Question 37

What does the objective lens do?

Answer 37

Changes levels of magnification

Question 38

What does the stage/ slide holder do?

Answer 38

It's where the slide is places

Question 39

What does the light dimmer switch do?

Answer 39

Allows you to change the brightness of the light

Question 40

What does the coarse focus do?

Answer 40

brings the cells into focus- makes them clearer

Question 41

What does the fine focus do?

Answer 41

Allows you to make small adjustments to bring cells into focus

Question 42

What does the light do?

Answer 42

Illuminates the specimen

Question 43

What does the base/handle do?

Answer 43

Helps you carry the microscope

Question 44

What is the independent variable?

Answer 44

What we change

Question 45

What is the dependent variable?

Answer 45

What we measure

Question 46

What is the dependent variable?

Answer 46

What we keep the same each time

Question 47

What is the magnification of the red lens?

Answer 47

x4

Question 48

What is the magnification of the yellow lens?

Answer 48

x10

Question 49

What is the magnification of the blue lens?

Answer 49

x40