A Level Biology - Foundations in Biology - 2 - Exam Style Questions with Answers

Created on February 27, 2023 By

paruppts12

ALVL_OCR_BIO_2_FOUNDATION_2

1 / 10

C

D

B

A

2 / 10

B

A

C

D

3 / 10

carbohydrase

protease

lipase

4 / 10

Which of the processes, A to D, describes the formation of cellulose?

condensation polymerisation of β-glucose molecules

hydrolysis polymerisation of deoxyribose molecules

condensation polymerisation of amino acid molecules

hydrolysis polymerisation of α-glucose molecules

5 / 10

ester bond

phosphodiester bond

1,4-glycosidic bond

1,6-glycosidic bond

6 / 10

D

C

A

B

7 / 10

Which of the statements, A to D, about amylopectin is correct?

it contains α 1-4 and β 1-6 glycosidic bonds

it is an unbranched chain of α-glucose monomers

it is made up of β-glucose monomers and is uncoiled

it contains 1-4 and 1-6 glycosidic bonds between α-glucose monomers

8 / 10

Which of the options, A to D, is a correct statement about polysaccharides of glucose?

Amylopectin has a mixture of 1,4-glycosidic and 1,6-glycosidic bonds between β-glucose molecules for rapid release of energy.

Amylose is a straight chain of α-glucose monomers bound by 1,6-glycosidic bonds to allow for dense packing.

Glycogen has a high proportion of 1,6-glycosidic bonds to produce a highly branched molecule for rapid release of α-glucose.

Cellulose micro fibrils are formed by hydrogen bonding between adjacent chains of α-glucose

9 / 10

Sucrase is the enzyme that breaks down sucrose.
Which of the bonds, A to D, is broken by sucrase?

beta glycosidic

peptide

ester

alpha glycosidic

10 / 10

B

C

A

D

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