Paper 1 Biology In Class Mock

Question 1

What are the tissues of a leaf

Answer 1

Waxy cuticle
Palisade mesophyll
Spongey mesophyll
Gard cells and stomata

Question 2

How does a larger leafs help a plant surbive in low light

Answer 2

More chloroplasts
More stomata
More palisade mesophyll

Question 3

What is the difference between beta and alpha gloucose

Answer 3

Aplpha OH on c1 points down beta glocose OH face up

Question 4

Describe how induced fit allows heokinase to acept both alpha and beta gloucose

Answer 4

Induced fit mechanism is where the active site of heokinase will change slightly to bind to the substrate because alpha and beta glucose are a similar shape it will accept both

Question 5

One enzyme anx its function in the convertion of triose phosphate to pyravate

Answer 5

Dehydrogenase removes a hydrogen from triose phosphate

Question 6

Ecplain why after clearing and area the subsequent colonisation is reffered to as secondary succession

Answer 6

Soil is already present
Their are already seeds there

Question 7

Why does regular cutting ptevent a climax community

Answer 7

Tall plants cant reach full size so no progression

Question 8

Why use different coloured traps to trap bees and wasps

Answer 8

Because different species are attracted to different colours