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Worksheets

iGCSE Science Question Mix

Total questions: 75

Worksheet time: 2hrs 30mins

Name
Class
Date
1.

This cell does not contain a nucleus

a)

Nerve Cell

b)

Red Blood Cell

c)

White Blood Cell

d)

Palisade cell

e)

Muscle cell

2.
What part of blood is responsible for fighting infections?
a)
Red Blood Cells
b)
White Blood Cells
c)
Platelets
d)
Plasma
3.
What does blood transport?
a)
Nutrients
b)
Oxygen 
c)
Carbon Dioxide
d)
All of the above
4.

Respiration takes place in the

a)

nucleus

b)

blood

c)

lungs

d)

mitochondria

5.

This type of respiration DOES need oxygen

a)

anaerobic

b)

aerobic

6.

What is respiration?

a)

the breakdown of glucose to release ATP

b)

the breakdown of glucose to release mitochondria

c)

the breakdown of food to release glucose

d)

the breakdown of glucose to release carbon

e)

the breakdown of oxygen to release glucose

7.

What is the name of part A

a)

a Trachea

b)

a Bronchus

c)

a Bronchiole

d)

an Alveolus

e)

a Pleural Membrane

8.

Choose the correct air pathway when you breathe in.

a)

trachea ---> Nose ---> Lungs

b)

Lungs ---> Nose ---> trachea

c)

Nose ---> trachea ---> Lungs

d)

Nose ---> Lungs ---> trachea

9.

What is moving in and out of the lung

a)

into the lung = oxygen

out of the lung = carbon dioxide

b)

into the lung = carbon dioxide

out of the lung = oxygen

c)

into the lung = hydrogen

out of the lung = carbon monoxide

d)

into the lung = oxygen

out of the lung = hydrogen

10.
What is the organ "x"
a)
Heart
b)
Lungs
c)
Diaphragm
d)
Trachea
11.

What is the unit for force?

a)

N/kg

b)

Nm

c)

N

d)

J

12.

Which part is a chloroplast?

a)

3

b)

1

c)

2

d)

4

13.

How many chloroplasts are shown in the diagram?

a)

7

b)

6

c)

3

d)

1

14.

During digestion, proteins are broken down into

a)

fatty acids and glycerol

b)

amino acids

c)

simple sugars

d)

carbohydrates

15.

Proteins are broken down into amino acids in the process of

a)

respiration

b)

digestion

c)

photosynthesis

d)

genetic modification

16.

Restriction enzymes are used in the process of

a)

respiration

b)

digestion

c)

photosynthesis

d)

genetic modification

17.
Based on the graph, what is the optimal temperature for this enzyme? 
a)
15oC
b)
40oC
c)
30oC
d)
35oC
18.

What happens to enzymes in high temperatures?

a)

they change their shape and denature

b)

they become dormant

c)

nothing happens

d)

none of the above

19.

The arrows show that this cell is losing water so it will ...

a)

expand

b)

shrink

c)

not change size

20.

This red blood cell swell and burst because ....

a)

water is entering the cell causing expansion

b)

water is leaving the cell causing shrinking

21.

This red blood cell swell and burst because ....

a)

there is less water inside the cell

b)

there is less water outside the cell

22.

In genetics, a two letter abbreviation, for example, Bb is a

a)

genotype

b)

phenotype

23.
Which of the following is heterozygous
a)
FF
b)
tt
c)
Gg
d)
RR
24.
Which of the following is homozygous recessive?
a)
rr
b)
AA
c)
TT
d)
Ff
25.
T - tall and t = short
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
26.

A female hormone responsible for the development of secondary sexual characteristics is called

a)

testosterone

b)

oestrogen

27.

During puberty, a girl's hips widen and breasts enlarge. Which hormone is responsible for this?

a)

testosterone

b)

oestrogen

28.

When egg cell is fertilised it is called a

a)

zygote

b)

blastocyst

c)

HeLa cell

d)

nucleotide

29.

What is the name of the equipment held by the person in the photo?

a)

a flask

b)

a gas syringe

c)

a gauze

d)

a beaker

30.

What is the purpose of the equipment held by the person in the photo?

a)

to measure temperature

b)

to measure volume of gas

c)

to measure pH

d)

to measure osmosis

31.
The picture below is an example of _________________.
a)
osmosis
b)
isotonic
c)
diffusion
d)
active transport
32.

What is diffusion?

a)

when molecules move

b)

when molecules move from a high concentration to a low concentration

c)

no movement

d)

molecules move everywhere

33.
Most of the mass in an atom is concentrated in the...
a)
electrons
b)
nucleus
c)
protons
d)
empty space
34.
What is the smallest?
a)
worm
b)
molecule
c)
galaxy
d)
atom
35.

Isotopes are the atoms of the same element with the same number of.............. but different number of............

a)

electrons/neutrons

b)

neutrons/protons

c)

protons/neutrons

d)

electrons/protons

36.

How can you get salt from salty water?

a)

evaporate the water; then crystallisation

b)

condense the water; then crystallisation

c)

Filtration

37.

Ink can be separated by a method of -----------------------------------------------

a)

distillation

b)

filtration

c)

chromatography

d)

sedimentation

38.
How are covalent bonds explained?
a)
When one atom takes the other atom's electron
b)
When the atom shares an electron with an another atom
c)
When the two nucleus merge
d)
When the neutrons leave the nucleus
39.

Which gas is released when the alkali metals react with water?

a)

hydrogen

b)

oxygen

c)

hydroxide

d)

carbon dioxide

40.
Which gas in our atmosphere is most abundant?
a)
Argon
b)
Oxygen
c)
Nitrogen
d)
Carbon Dioxide
41.
What is the percentage of oxygen in Earth's atmosphere?
a)
1%
b)
21%
c)
78%
d)
90%
42.

The laboratory test for oxygen is that

a)

it relights a glowing splint

b)

it relights a burning splint

c)

it changes lime water to milky

d)

it makes a glowing splint go out

43.

Bleaches damp litmus paper

a)

Chlorine

b)

Oxygen

c)

Hydrogen

d)

Water

44.

Turns limewater milky

a)

Hydrogen

b)

Oxygen

c)

Ammonia

d)

Carbon dioxide

45.

Makes a squeaky pop sound when lit

a)

Hydrogen

b)

Oxygen

c)

Chlorine

d)

Ammonia

46.

Crude oil is a a mixture of hydrocarbons

a)

True

b)

False

47.

Bitumen

a)

jet fuel

b)

fuel for cars

c)

for surfacing roads

d)

fuel for lorries

48.

kerosene

a)

jet fuel

b)

fuel for cars

c)

for surfacing roads

d)

fuel for lorries

49.

Fuel oil

a)

jet fuel

b)

fuel for cars

c)

for surfacing roads

d)

fuel for lorries

50.

speed of an object in a particular direction

a)

motion

b)

velocity

c)

speed

d)

acceleration

51.

Which of these is an example of deceleration?

a)

a bird taking off for flight

b)

a ball kicked by a goal keeper

c)

a car approaching a red light

d)

an airplane following a straight flight path

52.

What is the speed of the marble at 3 seconds?

a)

5 m/s

b)

45 m/s

c)

5 s/m

d)

45 s/m

53.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
54.

What is power measured in?

a)

Ω (Ohms)

b)

V (Volts)

c)

A (Amps)

d)

W (Watts)

55.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
56.

What is the power of a radio​

that has a current of 50 amps and a voltage of 12 volts?

a)

60W

b)

600W

c)

600Ω

d)

600V

57.

All stars begin their life as a

a)

Main Sequence

b)

Nebula

c)

Protostar

d)

Black Dwarf

58.
Our sun is currently in what star stage?
a)
Protostar
b)
Nebula
c)
Main Sequence
d)
Red Giant
59.
______ is a force that causes dust particles to stick together in a nebula.
a)
nuclear fusion
b)
gravity
c)
hydrogen
d)
friction
60.

Which one is the smallest?

a)

Sun

b)

moon

c)

Earth

d)

Jupiter

61.

Which has the highest gravity?

a)

Mercury

b)

Neptune

c)

The sun

d)

Jupiter

62.
The force of gravity acting on an object is the object's ______.
a)
mass
b)
matter
c)
weight 
d)
friction 
63.

Your mass stays the same wherever you are

a)

true

b)

false

64.

Mass is measured in

a)

kilograms

b)

newtons

c)

amps

d)

Kelvins

65.

Our galaxy is called

a)

The solar system

b)

Proxima Cantauri

c)

Andromeda

d)

Milky Way

66.

A solar system is .........

a)

a star with planets orbiting around it

b)

a collection of billions of stars

c)

a collection of billions of galaxies

67.

A galaxy is .........

a)

a star with planets orbiting around it

b)

a collection of billions of stars

c)

a collection of billions of galaxies

68.

An universe is .........

a)

a star with planets orbiting around it

b)

a collection of billions of stars

c)

a collection of billions of galaxies

69.

Eating a radioactive material is ....

a)

contamination

b)

irradiation

70.

Breathing in a radioactive substance is ....

a)

contamination

b)

irradiation

71.

Sitting on a radioactive rock is ....

a)

contamination

b)

irradiation

72.
The type of radioactive particle that can be stopped by a sheet of paper is the ____.
a)
alpha particle
b)
beta particle
c)
gamma ray
d)
uranium
73.
Name the most penetrating type of radiation.
a)
alpha
b)
beta
c)
gamma
d)
lambda
74.
Which type of radiation releases an electron?
a)
Alpha radiation
b)
Beta radiation
c)
gamma radiation
75.

Which is a wave?

a)

alpha

b)

beta

c)

gamma