
iGCSE Science Homework 2 Combined
Authored by Rebekah Toher
Science
9th Grade
Used 148+ times

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26 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which is a characteristic of all living organisms?
Breathing
Eating
Egestion
Movement
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The diagram shows a typical plant cell. What are the structures X, Y and Z?
X- Traps light, Y- Contains genetic material, Z- Controls entry and exit of materials
X-Traps light, Y-Site of chemical reactions, Z- Provides Support
X-Contains genetic material, Y-Site of chemical reactions, Z- Controls entry and exit of materials
D- Contains genetic material, Y- Controls entry and exit of materials, Z- Provides support
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The statements explain the activity of a human enzyme as the temperature increases from 20 °C
to 50 °C. The statements are in the wrong order.
1 The enzyme is working at its optimum rate.
2 The kinetic energy of the enzyme molecules begins to increase.
3 The enzyme begins to change shape.
4 The enzyme is completely denatured.
What is the correct order of the statements?
1 → 3 → 2 → 4
1 → 4 → 3 → 2
2 → 1 → 3 → 4
3 → 2 → 4 → 1
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Tests were performed on four samples of food. The results are shown in the table.
Which food contains protein only?
A
B
C
D
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A student is investigating how light affects photosynthesis.
The student shines a light from point Y and measures the volume of gas produced in five minutes.
Which gas is produced and how does the rate of gas production change when the light is moved
from Y to X?
Carbon dioxide, rate decreases
Carbon dioxide, rate increases
Oxygen, rate decreases
Oxygen, rate increases
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The diagram shows the alimentary canal.
Which label shows where bile is stored?
A
B
C
D
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The graph shows the rate of water loss from a plant.
What could cause the change in the rate of water loss between point X and point Y?
The air becomes cooler
The air becomes drier
The day becomes sunnier
The stomata open wider
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