PART AOBJECTIVE QUESTIONS

[15 MARKS]-------------------------------------

1 The diagram shows a mesophyll cell from a green plant.

Where is the cell’s DNA found?

2 The diagram shows a leaf in sunlight and some of the substances that diffuse into and out of it

Which of the following has a higher concentration outside the leaf than inside

the leaf

A carbon dioxide only

B carbon dioxide and oxygen

C oxygen and water

D water vapour only

3 The diagram shows some cells from the lining of the human trachea.

What is the function of these cells?

A absorption of oxygen into the blood

B excretion of carbon dioxide from the blood

C removal of mucus from the trachea

D secretion of mucus into the trachea

MONTHLY TEST 1 – MARCH 2014 2

4 A plant cell is placed in a sugar solution that is more concentrated than the cell sap. The diagram shows the appearance of the cell after 10 minutes.

Why does space X become filled with sugar solution?

A The cell wall and cell surface membrane are both fully permeable.

B The cell wall and cell surface membrane are both partially permeable.

C The cell wall is fully permeable and the cell surface membrane is partially permeable.

D The cell wall is partially permeable and the cell surface membrane is fully permeable.

5 What is a symptom of vitamin C deficiency?

A bleeding from skin and gums

B developing soft bones

C low red blood cell count

D teeth decay easily

MONTHLY TEST 1 – MARCH 2014 3

6 The diagrams show an experiment on enzyme activity.

The test-tubes contain equal volumes of solutions of catalase and hydrogen peroxide. In which test-tube does the enzyme fail to work because it has been denatured.

7 The graph shows how temperature affects the rate at which an enzyme works.

What does the graph show about this enzyme?

A The enzyme is denatured by temperatures above 65o C.

B The enzyme is denatured by temperatures below 8o C.

C The enzyme works fastest at 48o C.

D The rate of enzyme activity doubles when the temperature is raised from 10o C.to 20o C.

MONTHLY TEST 1 – MARCH 2014 4

8 Which part of a plant cell controls what enters and leaves the cell?

A cell sapB cell surface membraneC cellulose cell wallD cytoplasm

9 Which nutrients in the diet will help to prevent leg bones becoming deformed?

A calcium and vitamin CB calcium and vitamin DC iron and vitamin CD iron and vitamin D

10 The diagram shows four components of blood.Which component contains haemoglobin?

11 When a plant cell is placed in a dilute solution of red dye, the contents of the cell do not become red.

What prevents the dye molecules from entering the cell?

A cell surface membrane

B chloroplasts

C cytoplasm

D vacuole

12 Which nutrient, when deficient in the diet, causes a lack of haemoglobin in red blood cells?

A calcium

B iron

C vitamin C

D vitamin D

MONTHLY TEST 1 – MARCH 2014 5

15 Which graph shows the effect of temperature on enzyme-controlled reactions?

MONTHLY TEST 1 – MARCH 2014 6

PART BSUBJECTIVE QUESTIONS

[40 MARKS]-------------------------------------

1 Figure 1.1 shows a plant cell taken from the inside of a leaf.

Figure 1.1

(a) Give the letter of the part of which matches each of these descriptions.

This controls what enters and leaves the cell.

…………………...………………

This contains DNA.

……………………………………

This is where photosynthesis takes place.

…………………….……………...

[3](b) The leaf shown in Figure 1.1 requires steady supply water.

(i) Name the tissue in which water is transported from the roots to leaves.

………………………………………………………………………[1]

(ii) Describe the adaptation of root hair cell to carry out its function

efficiently

..................................................................................................................

.............................................................................................................[2]

[Total : 6]

2 Fig.2.1 shows a reaction of an enzyme molecule on a sucrose molecule.MONTHLY TEST 1 – MARCH 2014 7

Fig 1.1

(a) (i) Label R,S,T and U in Fig.1.1. [3]

(ii) Based on Fig 1.1 , state the characteristics of S.

………………………………………………………………………

………………………………………………………………………

…………………………………………………………………...[3]

(b) (i) Name the mechanism of enzyme reaction illustrated in Fig. 1.1.

………………………………………………………………………

…………………………………………………………………...[1]

MONTHLY TEST 1 – MARCH 2014

R:

S:

T;

8

(c) Complete the table below

Class of Food Function Basic unit Enzyme to digest

Carbohydrates

For growth and repair cells Amino acid

Fats

[8]

(d) (i) Describe how test the present of protein in the food

……………………………………………………………………….

……………………………………………………………………….

……………………………………………………………………[3]

(ii) Name the solution used to test the present of starch in food.

……………………………………………………………………[1]

[Total : 22]

MONTHLY TEST 1 – MARCH 2014 9

3 Fig. 3.1 shows a cell from a leaf before and after the plant wilted.

before wilting after wilting

Fig. 3.1

(i) On the diagram of the cell before wilting in Fig. 3.1 label and name two structures that would not be present in an animal cell.

[2]

(ii) Using your knowledge of osmosis, explain what happened to the plant cell if too much fertilizer is added.

………………………………………..………………………………………

…………………………………………………………………….……………

……………………………………………………………….……………...[3]

[Total : 5]

MONTHLY TEST 1 – MARCH 2014 10

4 Figure 4.1 shows the effects of a disease caused by dietary dificeincy.

Fig.4.1

(a) (i) Identify the disease

………………………………………………………………………………………………….……[1]

(ii) Name a food which could have prevented the disease.

………………………………………………………………………………………………………[1]

(b) What is the function of iron in the diet.

……..………………………………………………………………………………………………………[1]

(c) (i) State two functions of proteins

………………………………………………………………….……………………………..…………….

…………………………………………………………………………………………………….……[2]

(d) Examples of carbohydrates are ;

……………………………………………………………………………………………………………[2]

[Total : 7]

MONTHLY TEST 1 – MARCH 2014 11

MONTHLY TEST 1 – MARCH 2014 12