B2.1. Supplying The Cell

Question 1

What are carrier proteins

Answer 1

Special proteins which span the width of the cells membrane. Binds to a SPECIFIC molecule and rotates to transport molecule into the cell.

Active process - uses energy

Question 2

Active transport

Answer 2

An active process involving the transportation of substances AGAINST A CONCENTRATION GRADIENT

Question 3

What do goblet cells in ciliates cells do

Answer 3

Produce sticky mucus to trap dirt, which the collated cells then brush away

Question 4

Sperm Cell adaptations

Answer 4

Flagellum fro movement

Acrosome @ front with special digestive enzymes which penetrates the outer layer of the ovum

Lots mitochondria for lots of energy to help move

Question 5

Fat cell adapriations

Answer 5

Small cytoplasm with Fat reservoir around it

Question 6

RBC adaptation

Answer 6

BICONCAVE shape - higher SA : V ratio, speeding up diffusion of oxygen and other substances in and out

Hämoglobin - binds to oxygen to make oxyhemoglobin and then reverses by releasing oxygen a t muscles and other parts

No nucleus to maximise space for haemoglobin

Question 7

Palisade cell adaption

Answer 7

Packed with chloroplast for lots of photosynthesis

Ear the surface of the leaf to maximise access to light

Regular shape for close packing increasing the amount of light absorbed