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Y12 Unit 1 reveiw A

Last updated 2 months ago

31 questions

1

1

1

1

1

1

1

1

1

1

1

1

1

Question 1

1.

Question 2

2.

Question 3

3.

Question 4

4.

Question 5

5.

Question 6

6.

Question 7

7.

Question 8

8.

Question 9

9.

Question 10

10.

1

1

1

1

1

Question 16

16.

1

1

1

Question 20

20.

1

1

1

1

1

1

Question 27

27.

1

Question 28

28.

Both DNA and RNA are polynucleotides. The table shows how the components of polynucleotides can be represented.

1

1

1

Which components of the blood clotting process are enzymes in their active form?

prothrombin and thromboplastin only

prothrombin and thrombin only

prothrombin, thrombin and thromboplastin

thrombin and thromboplastin only

Which components of the blood clotting process are soluble in blood plasma?

fibrin and fibrinogen

fibrin and thromboplastin

fibrinogen and thromboplastin

fibrinogen only

Which polysaccharide does the liver store?

amylopectin

cellulose

glycogen

starch

Blood glucose levels can become high following the digestion of carbohydrates.
Which of the following can be digested to release glucose?

both fructose and sucrose

both fructose and galactose

both galactose and lactose

both lactose and sucrose

Which type of drug is warfarin?

an anticoagulant

an antihypertensive

a platelet inhibitor

a statin

Warfarin is used to treat people with blood clots as it lowers the number of clotting factors in the blood. One clotting factor in blood is prothrombin.
Prothrombin is converted to the enzyme thrombin by ..............................................................

Thromboplastin

Statin

Platlets

Inhibitors

The .............................................................. of thrombin binds to fibrinogen and as a result a
mesh of fibres and .............................................................. is formed.

Active site and cells

Active site and blood cells

substrate and erthrocytes

substrate and platlets

Which molecule traps red blood cells and platelets in the formation of a blood clot at a wound?

cholesterol

collagen

fibrin

fibrinogen

How many of the following are converted into an active enzyme during blood clotting?
fibrin
fibrinogen
prothrombin
thrombin

1

2

3

4

How many of the following are soluble in blood plasma?
fibrin
fibrinogen
prothrombin
thrombin

1

2

3

4

Question 11

11.

Question 12

12.

Question 13

13.

Question 14

14.

Question 15

15.

The nectar in flowers contains nutrients including sugars, amino acids and lipids.
The sugars in the nectar are fructose, glucose and sucrose.
Which of these contain glycosidic bonds?

Fructose only

Sucrose only

Fructose and glucose

Fructose and sucrose

Question 17

17.

Question 18

18.

Question 19

19.

Which bond joins two monosaccharides together to form a disaccharide?

Ester

Glycosidic

Hydrogen

Phosphodiester

Question 21

21.

Question 22

22.

Question 23

23.

Question 24

24.

Question 25

25.

Question 26

26.

How does glycerol pass through the liposome membrane?

Active transport

Osmosis

Diffusion 

Endocytosis

Question 29

29.

Question 30

30.

Question 31

31.

Which diagram shows the direction of blood flow through the vena cava?

A

B

C

D

Which row in the table describes the blood flow through the pulmonary artery and the pulmonary vein?

A

B

C

D

Which blood vessel takes blood from the heart to the body?

A

B

C

D

Which blood vessel has semilunar valves and contains blood with the highest concentration of carbon dioxide?

A

B

C

D

When is this heart in ventricular systole?

0.1

0.4

0.6

0.8

Which row of the table describes how amino acids are joined together to form a protein

A

B

C

D

Which row of the table describes a saturated lipid?

A

B

C

D

Which row in the table gives the correct number of monosaccharides and disaccharides shown in this graph?

A

B

C

D

Which row of the table describes the atria and ventricles during atrial systole?

A

B

C

D

Which row of the table identifies one lifestyle factor and one non-lifestyle factor?

A

B

C

D

Why do phospholipids form a bilayer?

A

B

C

D

Which letter represents a membrane glycoprotein?

A

B

C

D

Which diagram shows an ester bond?

A

B

C

D

Which row in the table describes an unsaturated fatty acid compared with a saturated fatty acid with the same number of carbon atoms?

A

B

C

D

Using the table in Q28, which diagram shows a mononucleotide? 

A

B

C

D

Using the table in Q28, which diagram shows two components joined by a phosphodiester bond?

A

B

C

D

Using the table in Q28, which diagram shows complementary base pairing?

A

B

C

D