Nat5 Biology Unit One Cell Biology Key Area 4 Proteins

Question 1

Why are proteins different shapes and why do they have different functions?

Answer 1

Different amino acid sequences

Question 2

What at are the different functions of proteins?

Answer 2

Structural,enzymes,hormones,antibodies and receptors

Question 3

What are enzymes?

Answer 3

Biological catalysts

Question 4

What is a catalyst?

Answer 4

Something that speeds up reactions without getting used up in the process

Question 5

Where are enzymes made?

Answer 5

In all living cells

Question 6

What is the shape of an active site on an enzymes molecule complementary to?

Answer 6

It’s specific subtrate(s)

Question 7

What are the two types of reaction enzymes can be involved in?

Answer 7

Degradation (breaking down
And
Synthesis(making of)

Question 8

What can Enzymes and other proteins be affected by?

Answer 8

Temperature and pH

Enzymes can be denatured, resulting in a change in their shape which will affect the rate of reaction

Question 9

What kind of reaction is HPCOW and what does it stand for?

Answer 9

Degradation

Hydrogen peroxide —Catalase—> Oxygen + Water

Question 10

What kind of reaction is SAM and what does it stand for?

Answer 10

Degredation

Starch —Amylase—> Maltose

Question 11

What kind of reaction is G1PPS and what does it stand for?

Answer 11

Synthesis

Glucose-1-Phosphate —Phosphorylase—> Starch (one large molecule
Lots of them)