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Grade 10: Assessment Test Paper 1

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

Which enzyme breaks down fat?

a)

amylase

b)

carbohydrase

c)

lipase

d)

protease

2.

Which factor below is NOT necessary for photosynthesis to occur?

a)

carbon dioxide

b)

chlorophyll

c)

oxygen

d)

water

3.

Which organelle in plant cells contains the pigment that makes leaves green?

a)

cell wall

b)

chloroplast

c)

mitochondria

d)

vacuole

4.

Which gas always ENTERS a leaf?

a)

carbon dioxide

b)

nitrogen

c)

oxygen

d)

water vapour

5.

What us the total number of teeth in the mouth of an adult male?

a)

16

b)

26

c)

32

d)

38

6.

Which process pushes a bolus of food down the esophagus?

a)

absorption

b)

assimilation

c)

chemical digestion

d)

peristalsis

7.

Sunlight and chlorophyll are needed for photosynthesis. What compounds are needed for this reaction to occur?

a)

carbon dioxide and water

b)

glucose and water

c)

oxygen and water

d)

oxygen and carbon dioxide

8.

In the digestive system, which structure produces enzymes that act upon carbohydrates, fats and proteins?

a)

esophagus

b)

pancreas

c)

stomach

d)

liver

9.

Which of the products of digestion are absorbed into the part labelled Number 4?

a)

amino acids and glucose

b)

amino acids and fatty acids

c)

fatty acids and glycerol

d)

glucose and glycerol

10.

If plant cells are placed in distilled water, they will swell up and become turgid. What term describes the process by which water moves into the cell?

a)

active transport

b)

osmosis

c)

plasmolysis

d)

transpiration

11.

The diagram shows four organs of the digestive system. Which organ contains villi?

a)
b)
c)
d)
12.

The diagram represents a type of tooth. Six year old Shannen is missing all of her teeth like the one shown. What problem will she experience when eating? She will have difficulty......

a)

biting off pieces of food

b)

chewing her food

c)

grinding her food

d)

tearing off pieces of food

13.

Which term describes the effect of gravity on the growth of a plant's root?

a)

geotropism

b)

hydrotropism

c)

phototropism

d)

thigmotropism

14.

What is the ratio of milk teeth to permanent teeth?

a)

2:3

b)

5:8

c)

10:12

d)

22:30

15.

Which structure in the leaf regulates transpiration and gas exchange?

a)

guard cell

b)

palisade cell

c)

waxy cuticle

d)

xylem tube

16.

A substrate molecule fits exactly into the active site of an enzyme. Which statement below best describes this property?

a)

enzymes are easily denatured

b)

enzymes are protein in nature

c)

enzymes are sensitive to pH

d)

enzymes are specific in their reaction

17.

In a leaf, photosynthetic tissues are found beneath which structure?

a)

cortex

b)

epidermis

c)

pith

d)

periderm

18.

Which structure in the leaf contains the most chloroplast cells?

a)

guard cell

b)

palisade mesophyll layer

c)

spongy mesophyll layer

d)

xylem

19.

Which type of cell lacks chlorophyll?

a)

guard cell

b)

palisade mesophyll

c)

spongy mesophyll

d)

xylem

20.

Which is the correct word equation for photosynthesis?

a)

glucose + oxygen = carbon dioxide + water

b)

oxygen + water = glucose + carbon dioxide

c)

carbon dioxide + water = glucose + oxygen

d)

energy + carbon dioxide + glucose = oxygen