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Review IGCSE
Review IGCSE
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Flashcards
40 cards
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Practice quiz
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Questions
40
Answers
1
Use the key to identify the arthropod shown.
D
C
A
B
2
This diagram shows an animal whose scientific name is Falco peregrinus. To which species does it belong?
vertebrate
F. peregrinus
bird
Falco
3
Which two gases are the biggest contributors to the greenhouse effect?
carbon dioxide and methane
sulfur dioxide and carbon monoxide
carbon monoxide and carbon dioxide
methane and sulfur dioxide
4
What is not a characteristic of all living organisms?
respiration
excretion
reproduction
photosynthesis
5
By which process does oxygen pass out of a leaf?
osmosis
diffusion
translocation
transpiration
6
What are the levels of organisation of the retina and of the eye?
B
C
A
D
7
How is urea removed from the body?
by being destroyed in the liver
as insoluble waste
in solution
in expired air
8
A woman has been smoking heavily for many years. Which statement could not be correct?
The cilia in the trachea have been destroyed.
Her arteries are blocked with tar
The surface area of the lungs is reduced.
She is addicted to nicotine.
9
What is an example of a characteristic that shows discontinuous variation in humans?
height
blood group
width of hand
body mass
10
The diagram shows a food web. At which trophic levels is the leopard feeding?
second and fourth
third and fifth
second and third
first and second
11
What were the genotypes of the parents?
Gg × gg
Gg × Gg
GG × Gg
GG × gg
12
Which nutrient produces a purple colour when mixed with biuret solution?
starch
fat
reducing sugar
protein
13
What is the correct sequence for blood being pumped from the heart to the lungs?
right atrium → right ventricle → pulmonary vein
left atrium → left ventricle → pulmonary artery
left atrium → left ventricle → pulmonary vein
right atrium → right ventricle → pulmonary artery
14
What characteristics do bony fish have
B
C
D
A
15
The diagram shows the structure of a palisade cell. Which features are also found in a liver cell?
2 and 5
3 and 4
4 and 5
1 and 2
16
Which way does energy flow directly in a food chain?
consumer to producer
carnivore to herbivore
producer to herbivore
decomposer to producer
17
How does blood change as it passes through a kidney?
It loses urea
It gains glucose.
It loses protein.
It gains salts.
18
The diagram shows part of the water cycle. Where is osmosis occurring?
A
D
B
C
19
The graph shows how the population of the world increased from 1650 until the present day.
stationary and death
lag and exponential (log)
exponential (log) and stationary
death and lag
20
What would be the pupil size and lens shape of a person reading a mobile phone text message in a brightly-lit room?
A
C
D
B
21
What always increases during the development of an organism?
dry mass
cell number
volume
complexity
22
This shows changes in biomass of different organisms in an ecosystem. Each line represents a different trophic level.
D
C
B
A
23
Plant cells are often green but animal cells are not usually green. Which structure in plant cells makes them green?
cell wall
vacuole
cytoplasm
chloroplast
24
Why is the circulatory system of mammals described as a double circulation?
Blood flows firstly through arteries and then through veins.
The atria and the ventricles contract alternately.
Blood flows through the heart twice on one complete circuit of the body.
In the heart, blood flows firstly through atria and then through ventricles
25
Which process may result in eutrophication in a lake?
fertilisers entering from farmland
hot water entering from a power station
pesticides entering from farmland
bleach entering from a factory
26
The diagram shows the teeth of the lower jaw of a human. Which tooth is an incisor?
B
A
D
C
27
This shows a developing fetus attached to the uterus. Which one is normally cut immediately after birth?
D
C
A
B
28
Lactase is a human enzyme that catalyses the breakdown of lactose in milk. Which temperature does lactase work fastest?
100°C
18°C
0 °C
37°C
29
This shows changes that occur in a woman during menstrual cycle. Which statement is supported by evidence in the graph?
Within 5 days of ovulation, the uterus lining gets thinner
At ovulation, the uterus lining is at its thickest.
Each time the oestrogen rises, the uterus lining becomes thicker
A large increase in progesterone always results in thickening of uterus
30
Which word equation represents anaerobic respiration in human muscle?
glucose → carbon dioxide + lactic acid
glucose → ethanol (alcohol)
glucose → carbon dioxide + ethanol (alcohol)
glucose → lactic acid
31
Which cell helps to move dust particles out of an organism?
red blood cell
muscle cell
guard cell
ciliated cell
32
What are the sex chromosomes for human females and males?
C
D
A
B
33
The graph shows the effect of pH on a particular enzyme-controlled reaction. When is the enzyme not active?
at pH 5 and pH 9
at pH 3 and pH 11
at pH 1 and pH 13
at pH 7
34
This apparatus demonstrates osmosis. After one hour, what would happen to the liquid levels in glass tubes?
level in tube 1 rises; tube 2 falls
level in tube 1 rises; tube 2 rises
level in tube 1 falls; tube 2 falls
level in tube 1 falls; tube 2 rises
35
Which structures in plants and in humans normally carry amino acids?
A
B
C
D
36
Which environmental condition is not essential for the germination of all seeds?
availability of oxygen
availability of water
suitable temperature
availability of light
37
What is carried by the xylem?
sugars
mineral ions
starch
chlorophyll
38
What makes alveoli suitable as a gas exchange surface?
A
D
C
B
39
The effects of vasodilation and sweating on the body temperature and on the amount of moisture on the surface of skin?
A
D
B
C
40
Which processes result in organisms gaining carbon compounds, and in the addition of carbon dioxide to the atmosphere?
A
C
D
B
