key concepts

Question 1

What 8 features does a plant cell have?

Answer 1

Chloroplasts, vacuole, nucleus, cytoplasm, cell membrane, cell wall, mitochondria, ribosomes

Question 2

What 5 features does an animal cell have?

Answer 2

Cell membrane, nucleus, cell wall, ribosomes, mitochondria

Question 3

What is the function of a nucleus?

Answer 3

Control centre of the cell. Contains the genes of the cell.

Question 4

What is the function of the cytoplasm in a cell?

Answer 4

Chemical reactions like respiration take place here.

Question 5

What is the function of the cell surface membrane?

Answer 5

Stores sugar and helps the cell fill the cell wall

Question 6

What is the function of the cell wall?

Answer 6

Makes a rigid box that supports the cell

Question 7

What is the function of the cell sap vacuole?

Answer 7

Let’s some substances in to the cell and keeps others out

Question 8

What is the function of the chloroplasts?

Answer 8

Where photosynthesis takes place

Question 9

What do plant cells have that animal cells don’t?

Answer 9

Chloroplasts, vacuole, cell wall

Question 10

What does the root hair cell do and where is it found?

Answer 10

It is found in the roots of the plant, it absorbs water and the hairs help increase the surface area

Question 11

What does the cell from breathing system do?

Answer 11

It has microvilli and this helps to give the cell a higher surface area. It is found in the windpipe and it absorbs food

Question 12

What does a red blood cell do and where is it found?

Answer 12

Because it carries haemoglobin it needs a high surface area. It is found in the bloodstream and it absorbs and carries oxygen around the body. It doesn’t have a nucleus and his allows more space for oxygen.

Question 13

What does a plant cell do and where is it found?

Answer 13

It has chloroplasts, found in the lead and it performs photosynthesis.

Question 14

What does a sperm cell do and where is it found?

Answer 14

Has a tail to help it swim and carry genes to the egg. It is found in the testes.

Question 15

What does a ciliates cell do and where is it found?

Answer 15

Found in the digestive system where it uses its cilia to push substances and mucus along. Found in the small intestine.

Question 16

Name two different types of bacteria

Answer 16

Salmonella and yaculi

Question 17

What are pathogens?

Answer 17

Harmful bacteria that can cause disease.

Question 18

What does a white blood cell do?

Answer 18

Kills harmful bacteria

Question 19

What does a nerve cell do?

Answer 19

Sends electrical impulses/messages to the brain

Question 20

What is a eukaryotic cell?

Answer 20

Cells which have a true nucleus. Evolved from prokaryotes.

Question 21

What are prokaryotic cells?

Answer 21

Cells without a true nucleus. Simplest and oldest cells

Question 22

Nanometer (nm) —> micrometer

Answer 22

Divide by 1000

Question 23

Micrometer to millimetre

Answer 23

Divide by 1000

Question 24

Millimetre to centimetre

Answer 24

Divide by 10

Question 25

Centimetre to millimetre

Answer 25

X10

Question 26

Millimetre to micrometer

Answer 26

X1000

Question 27

Micrometer to nanometer

Answer 27

X1000

Question 28

Actual size of a magnified object

Answer 28

Image ——— Magnification

Question 29

Magnification of an image

Answer 29

Image size ————— Actual size

Question 30

What does muscular tissue do?

Answer 30

This can contract to bring out movement

Question 31

What does epithelial tissue do?

Answer 31

This covers some parts of the body

Question 32

What does glandular tissue do?

Answer 32

Produces substances such as enzymes and hormones.

Question 33

What does glandular tissue produce in the stomach?

Answer 33

Produces digestive juices

Question 34

Where in the stomach does epithelial tissue cover?

Answer 34

The inside and outside

Question 35

What would happen if the muscular tissue in the stomach was not functioning properly?

Answer 35

The food would not digest properly

Question 36

What substance does the liver produce?

Answer 36

Bile

Question 37

What does the large intestine produce?

Answer 37

Faeces

Question 38

What glands produce the digestive juices?

Answer 38

The pancreas and salivary glands

Question 39

Where does absorption of soluble foods take place?

Answer 39

In the stomach and in the large intestine

Question 40

What are chromosomes and where would you find them?

Answer 40

Chromosomes carry genetic info. Found in the nucleus.

Question 41

Why are there lots of mitochondria in ciliated cells?

Answer 41

Cilia move and hey need lots of energy