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Y11 igcse Biology review

Total questions: 60

Worksheet time: 51mins

Name
Class
Date
1.

What is the main energy change that happens in photosynthesis?

a)

chemical --> light

b)

light --> kinetic

c)

light --> chemical

d)

kinetic --> light

2.

Where is chlorophyll found in plant cells?

a)

cytoplasm

b)

chloroplast

c)

mitochondria

d)

vacuole

3.

What substance can glucose be converted to, which is the transport carbohydrate of plants?

a)

starch

b)

cellulose

c)

sucrose

d)

amino acids

4.

All of the definitions below are descriptions of a 'limiting factor'.


Which of these is the IGCSE Biology definition?

a)

a factor in the environment that runs out

b)

something present in the environment in such short supply that it restricts life processes

c)

a factor in the environment that is in short supply

d)

something present in the environment in such short supply that it stops life processes

5.

Click on the picture to make it larger.


What do curves C and D suggest is limiting the rate of photosynthesis?

a)

light intensity

b)

carbon dioxide concentration

c)

temperature

d)

water

6.

Why is the chemical sodium hydrogencarbonate given to water plants in photosynthesis practicals?

a)

it is used to produce chlorophyll

b)

it allows the plant to respire

c)

it supplies the plant with CO2 gas when it dissolves

d)

it is a source of glucose

7.

Which of the following is true of a vein?


One, some or all answers could be correct?

a)

it carries blood back to the heart

b)

it has a thick layer of elastic tissue

c)

it has a thin layer of muscle tissue

d)

it has a wide lumen

8.
a)
X = Artery
Y = Vein
Z= Capillary
b)
X = Artery
Y = Capillary
Z= Vein
c)
X = Vein
Y = Artery
Z= Capillary
d)
X = Vein
Y = Capillary
Z= Artery
9.
a)
A
b)
B
c)
C
d)
D
10.
a)
A
b)
B
c)
C
d)
D
11.
a)
A
b)
B
c)
C
d)
D
12.
a)
A
b)
B
c)
C
d)
D
13.
a)
cell membrane = X
cell wall = Y
cytoplasm = Z
b)
cell membrane = X
cell wall = Z
cytoplasm = Y
c)
cell membrane = Z
cell wall = Y
cytoplasm = X
d)
cell membrane = Z
cell wall = X
cytoplasm = Y
14.
a)
A
b)
B
c)
C
d)
D
15.

What term is given to an organism that carries two identical alleles of a gene

a)

heterozygous

b)

homozygous

c)

dominant

d)

recessive

16.

What term is used to describe the alleles that a person carries for a gene

a)

genotype

b)

dominant

c)

phenotype

d)

recessive

17.

What word is used to describe a version of a gene?

a)

genotype

b)

phenotype

c)

allele

d)

chromosome

18.

Why did population of white peppered moths decrease during the industrial evolution?

a)

White moths were better camouflaged so they, survived and bred.

b)

Black moths were better camouflaged so they, survived and bred.

c)

White moths were better camouflaged so they were more likely to be eaten by predators.

d)

Black moths were better camouflaged so they were more likely to be eaten by predators.

19.

What are the products of anaerobic respiration of bacteria used in yoghurt making?

a)

carbon dioxide and water

b)

carbon dioxide an oxygen

c)

lactic acid

d)

lactic acid and water

20.

A hormone is a chemical substance produced by ...

a)

A gland

b)

The liver

c)

A target organ

d)

The blood

21.

In these experiments what responses have the shoots shown?

a)

Positive phototropism and positive gravitropism

b)

Negative phototropism and positive gravitropism

c)

Positive phototropism and negative gravitropism

d)

Negative phototropism and negative gravitropism

22.

The diagram shows a person sweating in hot weather. What part is played by the sweat glands during the process of sweating?

a)

Effector

b)

Receptor

c)

Sense Organ

d)

Stimulus

23.
The role of the guard cell is to
a)
help control the temperature of the plant
b)
control how much water enters the leaf
c)
control how much glucose is stored
d)
control the movement of water vapour & gases 
24.
What is chlorophyll's main function?
a)
to make the plant a vegetable
b)
to blend into their environment
c)
to capture energy from sunlight for photosynthesis
d)
to help prevent water loss
25.

What is letter "D" pointing to?

a)

upper epidermis

b)

palisade mesophyll

c)

spongy mesophyll

d)

bundle sheath

26.

What is letter "A" pointing to?

a)

cuticle

b)

upper epidermis

c)

lower epidermis

d)

palisade mesophyll

27.
What is a substance called if it speeds up a chemical reaction?
a)
reusable
b)
catalyst
c)
specific
d)
fragile
28.
In the diagram, what is letter A? 
a)
product
b)
substrate
c)
enzyme-substrate complex
d)
active site
29.

Enzymes are an example of

a)

Lipids

b)

Carbohydrate

c)

Protein

d)

Nucleic Acid

30.
Letter B...
a)
active site
b)
enzyme
c)
substrate
d)
products
31.

What happens when enzymes are heated to a high temperature?

a)

The enzymes die.

b)

The shape of the enzyme are changed and it denatures

c)

The enzymes' amino acid sequence changes.

d)

The enzymes remain the same

32.
Which of the following conclusions can be drawn from this graph?
a)
The optimum pH of the enzyme is 6.6.
b)
The optimum pH of the enzyme is 5.8
c)
The enzyme’s activity increases as pH increases 5.0 to 9.0
d)
The enzyme’s activity is greater around pH of 8.0 .
33.

The ____________________ mechanism describes how each substrate must fit into the enzyme.

a)

lock and key

b)

hammer and nail

c)

jigsaw puzzle

d)

seesaw

34.

Where do substrates bind to an enzyme?

a)

calcium channels

b)

active site

c)

receptor molecules

d)

voltage-gated channels

35.

What type of white blood cells produce antibodies?

a)

lymphocytes

b)

phagocytes

c)

erythrocytes

d)

platelets

36.

TRUE or FALSE:


"When an antibody attaches to an antigen, it marks the pathogen so it can be destroyed quicker by phagocytes."

a)

True

b)

False

37.

The first time that a pathogen enters the body, it can usually cause disease.


What is the main reason for this?

a)

The pathogen changes its antigen

b)

It takes time to produce specific antibodies to the pathogen

c)

Antibodies cannot be produced to the pathogen

d)

Antibodies cannot be produced to the pathogen

38.

What type of immunity is vaccination an example of?

a)

natural active immunity

b)

artificial active immunity

c)

natural passive immunity

d)

artificial passive immunity

39.

What is produced by anaerobic respiration in yeast?

a)

Lactic acid and carbon dioxide

b)

Lactic acid only

c)

Carbon dioxide and ethanol

d)

Carbon dioxide only

40.

The apparatus shown is set up and left for an hour. A gas is released by the mixture. It caused the indicator to go milky. What is the gas and what is the indicator solution?

a)

Gas: CO2 Indicator: lime water

b)

Gas: CO2 Indicator: universal indicator

c)

Gas: O2 Indicator: ethanol

d)

Gas: O2 Indicator: Hydrogen carbonate indicator

41.
This organelle is the _____________.
a)
chloroplast
b)
Golgi bodies
c)
nucleus
d)
mitochondria
42.

Which is the correct path way taken by blood flowing through the human circulatory system?

a)

body > vena cava > left atrium > left ventricle > lungs

b)

left ventricle > aorta > body > vena cava > right atrium

c)

lungs > pulmonary artery > left atrium > left ventricle > aorta

d)

right ventricle > aorta > lungs > body > right atrium

43.

State which component of the blood carries oxygen.

a)

plasma

b)

red blood cells

c)

white blood cells

d)

platelets

44.

The diagram shows a plant cell that has been placed in a concentrated solution for 30 minutes.What identifies X and Y?

a)

X: cell membrane, Y: air

b)

X: cell membrane, Y: concentrated solution

c)

X: cell wall, Y: air

d)

X: cell wall, Y: concentrated solution

45.
Digestive enzyme found in saliva
a)
mechanical
b)
chemical
c)
amylase
d)
gallbladder
46.
What is part F?
a)
mouth
b)
small intestine
c)
rectum
d)
esophagus
47.
Which blood vessels carry blood away from the heart?
a)
capillaries
b)
veins
c)
arteries
d)
venules
48.
What two molecules make up a lipid?
a)
glycogen and fatty acids
b)
alpha and beta glucose
c)
glycogen and amino acids
49.
A biological polymer made of amino acid monomers is a 
a)
protein
b)
lipid
c)
carbohydrate
d)
nucleic acid
50.

Which hormone is known as the fight or flight hormone?

a)

Adrenaline

b)

Glucagon

c)

Insulin

d)

Glycogen

51.
What is the evaporation of a liquid to cool the body?
a)
Shivering
b)
Sweating
c)
Vasodilation
d)
Vasoconstriction
52.
Homeostasis
a)
allows for a wildly fluctuating internal environment
b)
is impossible in vertebrates
c)
is the maintenance of a relatively stable internal environment and often incorporates a form of feedback regulation
d)
is the maintenance of a relatively stable external environment and often incorporates a form of feedback regulation
53.
Which of the following best describes a DNA molecule?
a)
double helix
b)
contains ribose
c)
made of amino acids
d)
contains Uracil
54.
The process to go from DNA to mRNA is _______
a)
translation
b)
transcription
c)
replication
55.
The process to go from mRNA to a protein is called ____
a)
transcription
b)
rRNA
c)
replication
d)
translation
56.
Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG
a)
ATG TGA CAG
b)
TAC ACT GTC
c)
GTA AGT GAC
d)
CAT TCA CTG
57.

Which kingdoms contain species which can photosynthesise?

a)

Animals

b)

Plants

c)

Fungi

d)

Protoctists

e)

Prokaryotes

58.

This kingdom is made up of microscopic unicellular organisms.

a)

Animals

b)

Plants

c)

Fungi

d)

Protoctists

e)

Prokaryotes

59.
In meiosis, the haploid number of chromosomes in a human sex cell is:
a)
46
b)
92
c)
22
d)
23
60.
Another name for a sex cell is a:
a)
gamete
b)
embryo
c)
bone cell
d)
muscle cell

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