Topic 2

Question 1

Functions of cell membrane

Answer 1

Barrier between cell and surroundings
Controls movement of substances into and out of the cell
Partially permeable

Question 2

Functions of nucleus

Answer 2

Controls all activities in the cell
Controls how cells develop

Question 3

Functions of
Cytoplasm

Answer 3

Place where many chemical reactions take place

Question 4

Functions of chloroplast

Answer 4

Photosynthesis
Stores starch

Question 5

Functions of cell wall

Answer 5

Stops cells from bursting when they fill with water
Gives shape
Allows water to pass through freely and fully permeable

Question 6

Functions of vacuole

Answer 6

Full of water to maintain shape and firmness of cell
Stores ions and sugars

Question 7

Functions of mitochondria

Answer 7

Release energy during aerobic respiration

Question 8

Functions of ribosomes

Answer 8

Make proteins for the cell

Question 9

Plant cell parts

Answer 9

Cell wall
Chloroplasts
Cell membrane
Vacuole
Nucleus
Cytoplasm

Question 10

Animal cell parts

Answer 10

Cell membrane
Nucleus
Cytoplasm

Question 11

How to calculate magnification

Answer 11

Image size / actual size

Question 12

Where are ribosomes present

Answer 12

Outer surface of RER

Question 13

Function or RER

Answer 13

The main function of RER is to package and transport proteins made by ribosomes

Question 14

Vesicles function

Answer 14

Travel through cytoplasm and attach to cell membrane and release their contents outside the cell

Question 15

Specialized cells

Answer 15

Root hair cells
Xylem vessels
Neurones
Red blood cells
Palisade mesophyll cells
Sperm cells
Egg cells

Question 16

Functions of ciliated cells

Answer 16

Found in air passages in lungs
Have cilia on the surface
Cilia Move the mucus that traps dust and pathogens up to the nose and throat

Question 17

Functions and adaptations of root hair cells

Answer 17

Absorb water and ions from the surface
Long extensions that give large surface area

Question 18

Functions and adaptations of xylem vessels

Answer 18

Cell walls are thickened with bands of cellulose and waterproof material called lignin

Lignin allows water and ions to move from the roots to the rest of the plant to support the stem and leaves

Question 19

Functions and adaptations of Neurons

Answer 19

Thin extensions of the cytoplasm like wires.
They are able to transmit information in the form of electrical impulses around the body

Question 20

Functions and adaptations of Red blood cells

Answer 20

Contain haemoglobin that Carries oxygen
Flattened disc shape provides a large surface area compared with their volume

Question 21

Functions and adaptations of palisade mesophyll cells

Answer 21

Cell wall made up of tough cellulose
Chloroplast trap light energy for photosynthesis
Large vacuole is filled with cell sap

Question 22

Functions and adaptations of Sperm cells

Answer 22

Tail and are adapted for swimming
Head Carrie’s genetic information from male into female

Question 23

Functions and adaptations of Egg cells

Answer 23

Bigger than sperm cells
Contain yolk as store of energy
Carries genes

Question 24

Levels of organization for organs

Answer 24

Organ system
Organ
Tissue
Cells

Question 25

Parts of digestive system

Answer 25

Oesophagus
Stomach
Pancreas
Liver
Intestines

Question 26

Parts of excretory system

Answer 26

Kidneys
Ureters
Bladder

Question 27

Parts of nervous system

Answer 27

Brain
Spinal cord
Nerves

Question 28

Parts of reproductive system

Answer 28

Ovaries
Urerus
Vagina

Question 29

What is mesophyll

Answer 29

The tissue that Carries out photosynthesis in leaves

Question 30

What is a mesophyll

Answer 30

The tissue that carries photosynthesis in leaves is called mesophyll