CCEA GCSE Biology cells and life processes overview quiz quiz

Nucleus, mitochondria and ribosomes

Cell wall, chloroplasts and permanent vacuole

Cell membrane, cytoplasm and ribosomes

Nucleus, cytoplasm and cell membrane

x4

x40

x400

x4000

So it can divide more quickly

To make more room for haemoglobin to carry oxygen

So it can make its own proteins

To let it change shape and engulf bacteria

Glucose + oxygen gives carbon dioxide + water

Carbon dioxide + water gives glucose + oxygen

Carbon dioxide + glucose gives water + oxygen

Oxygen + water gives glucose + carbon dioxide

Light intensity

Carbon dioxide concentration

Temperature

Oxygen concentration

Lower epidermis

Waxy cuticle

Palisade mesophyll

Spongy mesophyll

They become flaccid and shrink

They become turgid and bend apart

They divide into more guard cells

They fill with chlorophyll

Iodine test for starch

Biuret test for protein

Benedict's test for reducing sugar (heated)

Ethanol test for fat

Carbohydrate

Fat

Protein

Fibre

It has been used up in the reaction

Its active site has changed shape so the substrate no longer fits

It has become a different substrate

It is working at its fastest rate

About 4 degrees

About 20 degrees

About 37 degrees

About 60 degrees

Protease into amino acids

Lipase into fatty acids and glycerol

Amylase into maltose

Amylase into glucose

It digests protein into amino acids

It emulsifies fat and neutralises stomach acid

It absorbs glucose into the blood

It breaks down starch into maltose

Thick muscular walls and few blood vessels

Villi giving a large surface area, thin walls and a good blood supply

A waxy waterproof lining

A single thick cell layer with no blood supply

How many times bigger the image is

The ability to tell two close points apart

The brightness of the lamp

The thickness of the specimen