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Y12 Unit 1 review b

Last updated about 11 hours ago

35 questions

1

1

1

1

1

1

Question 1

1.

1

1

1

Question 4

4.

1

Question 5

5.

Using the image from Q4, which row of the table identifies the bonds labelled S, T and U?

1

1

Question 7

7.

The genetic codes TAA, TAG and TGA are stop codons.
(a) State the sequence of the first four amino acids coded for by this length of DNA.

1

Question 8

8.

A change in a single base can cause a change in the amino acid sequence produced in protein synthesis. Name tye type of mutation - Base number 3 becomes cytosine (C)

1

Question 9

9.

1

Question 11

11.

Pectinase is an enzyme that breaks down pectin. Pectin is present in the cell walls of fruits.
What type of molecule is pectinase?

disaccharide

polysaccharide

protein

triglyceride

1

Question 12

12.

Which is the correct statement about the formation of glycogen?

A

B

1

Question 13

13.

Which formula is correct for a monosaccharide?

A

B

1

Question 14

14.

Which of the following is a medication to control blood pressure?

A

B

1

Question 15

15.

Which diagram shows the sequence of events for the hydrolysis of lactose?

A

B

1

Question 16

16.

Which of the following are the monosaccharides present in lactose?

A

B

1

Question 17

17.

Which row in the table describes line P and identifies the letter that shows the decrease in activation energy due to lactase?

A

B

Question 18

18.

Which are the products of lactose digestion?

Fructose and galactose

Fructose and glucose

Galactose and glucose

Glucose and glucose

Question 19

19.

What type of chemical reaction is involved in breaking a lactose molecule into two monosaccharides?

Condensation

Esterification

Hydrogen bonding

Hydrolysis

1

Question 20

20.

What is a mutation?

A

B

1

Question 21

21.

Which glycosidic bonds are responsible for the branching in glucomannan?

A

B

1

Question 22

22.

Which row of the table shows which of these sugars are monosaccharides and which are disaccharides?

A

B

Question 23

23.

Which type of bond joins two monosaccharides together to form a disaccharide?

Ester

Glycosidic

Peptide

Phosphodiester

1

Question 24

24.

How many are the statements are correct for starch in living cells?

A

B

1

Question 25

25.

What is the unit?

A

B

1

Question 26

26.

Which structures contain a phosphate group?

1

1

Question 28

28.

What is the name of the blood vessel labelled G?

A

B

1

Question 29

29.

Which row of the table identifies the stages before and after stage F?

A

B

1

Question 30

30.

Which sugar is present in uridine monophosphate?

A

B

1

Question 31

31.

1

Question 32

32.

Using the image from question 31, which of the following diagrams shows the R group only of AzPhe?

A

B

1

Question 33

33.

What is the ratio of glycerol to fatty acid in a triglyceride molecule?

A

B

1

Question 34

34.

Which diagram shows the bond that joins a glycerol molecule to a fatty acid in a triglyceride?

A

B

Question 35

35.

Which type of treatment is warfarin?

Anticoagulant

Antihypertensive

Platlet inhibitor 

Statin

Which part would contain the statement: uses proteins?

II

III

IV

VII

Question 2

2.

Which part would contain the statement: needs energy in the form of ATP?

II

V

VI

VII

Question 3

3.

Which part would contain the statement: solutes can only move down a concentration gradient?

II

III

V

VII

A

B

C

D

Question 6

6.

The base labelled P is adenine.
Which is the base labelled Q?

Cytosine

Guanine

Thymine

Uracil

A change in a single base can cause a change in the amino acid sequence produced in protein synthesis. Name tye type of mutation - Base number 6 becomes number 5 in the sequence

Question 10

10.

A change in a single base can cause a change in the amino acid sequence produced in protein synthesis. Name tye type of mutation -Base number 9 becomes number 10 in the sequence

C

D

C

D

C

D

C

D

C

D

C

D

C

D

C

D

C

D

C

D

C

D

Q and R

Q and T

R and S

S and T

Question 27

27.

Which ratio of the structures affects the fluidity of this membrane?

Q:T

R:Q

R:T

S:T

C

D

C

D

C

D

C

D

C

D

C

D