biology

1. which process do living organisms use to remove excess carbon dioxide from their bodies?
a excretion
b movement
c nutrition
d respiration

2 the photograph shows an elephant hawk-moth.
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using the features visible in the photograph, to which group of arthropods does the elephant
hawk-moth belong?
a arachnids
b_ crustaceans
c insects
d_ myriapods

3 what does the term species mean?
a agroup of animals that reproduce asexually
b  agroup of organisms that can reproduce to produce fertile offspring
c all the plants that live in the same area at the same time
d  agroup of vertebrates that reproduce sexually

4 the image shows an animal.
the length of the animal in the image is 36mm.
the actual length of the animal is 12mm.
what is the magnification of the image?
a x0.3 b x3 c x43.2 d= x432

5 the diagram shows a plant cell.
which features show that it is a plant cell?
a_ithas a cell wall and a vacuole.
b_ it has a nucleus and cytoplasm.
c_ it has a nucleus but no chloroplasts.
d_ it has chloroplasts but no vacuole.

6 a scientist investigates the effect of two types of antibiotics on bacteria.
the table shows the results.
type of antibiotic effect on bacteria
penicillin cells burst

tetracycline stops protein synthesis
which cell structure does each antibiotic affect?
a penicillin affects the cell wall and tetracycline affects the ribosomes.
b_ penicillin affects the nucleus and tetracycline affects the cytoplasm.
c_ penicillin affects the ribosomes and tetracycline affects the cell wall.
d_ penicillin affects the vacuole and tetracycline affects the nucleus.

7 the diagram shows a section through an alveolus and through a capillary.
wall of the alveolus
air ®
y \ in lf
aa.
red
capillary x ch / blood cells
wall \
c s
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ox, ye
cee
ovo oy
low carbon dioxide not to
concentration scale
high carbon dioxide
concentration
how does carbon dioxide move from y to x?
a by active transport
b by diffusion
c_ by osmosis
d by transpiration

8 — in which row will the diffusion of ions into a cell be the quickest?
ion concentration | '°" comearieiien surface area of width of
: in the external
in the cell : the cell the cell membrane
solution
a high low large thin
b low high small thick
c high low small thick
d low high large thin

9 large biological molecules are made of smaller molecules.
which row correctly matches the large molecule with the smaller molecules?
|| large molecule smaller molecules
a cellulose fatty acids
b fat amino acids
c protein amino acids
d starch fatty acids

10 a student tests a solution for protein.
which row shows the correct food test and a positive result?
colour seen with a
name of test aes
positive result
a benedict’s test blue-black
b benedict’s test purple
cc biuret test blue-black
d biuret test purple

11 what is a correct statement about enzymes?
a the ph has no effect on the rate of reaction.
b_ they are denatured at low temperatures.
c_ they are made of carbohydrates which have specific shapes.
d_ they speed up chemical reactions.

12 which statement about enzyme action is correct?
a_ the shape of the enzyme’s active site is complementary to all proteins.
b_ the shape of the enzyme’s active site is complementary to the substrate.
c_ the shape of the substrate’s active site is complementary to the product.
d_ the shape of the substrate’s active site is complementary to the enzyme.

13 the graph shows the results of an experiment that investigated the effect of light intensity on the
rate of photosynthesis.
y-axis |
x-axis

what are the labels for the x-axis and the y-axis?
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a light intensity rate of oxygen

production
b light intensity rate of carbon
dioxide production
c rate of carbon light intensity
dioxide production
d rate of oxygen light intensity
production

14 the diagram shows a cross-section of a leaf.
which type of cell controls the entry of carbon dioxide into the leaf?
a
se
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15 the table shows vitamins that should be included in a balanced diet.
which row shows the correct use in the body and food source for one of these vitamins?
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a cc strengthens bones and teeth sugar
b cc resistance to disease fish oil
c d strengthens bones and teeth fish oil
d d resistance to disease sugar

16 which substance is an ion that is used to make chlorophyll?
a calcium
biron
c magnesium
d © starch

17. what is the function of the gall bladder?
a production of bile
b production of gastric juice
c storage of bile
d _ storage of gastric juice

18 the diagram shows the different types of teeth found in the upper jaw of a human.
they are in the same order as they are found in the jaw.
which type of tooth is circled?
a canine
b incisor
c_ molar
d premolar

19 aperson ate food x. chemical digestion of food x occurred in the mouth and small intestine but
not in the stomach.
what was in food x?
a fat
b_ions
c protein
d - starch

20 what is present in a vascular bundle?
a anthers
b_ guard cells
c _palisade cells
d_ xylem vessels

21 what is the pathway taken by water from the soil to the leaf?
a root hair cells — root cortex mesophyll > xylem
b root hair cells — root cortex — xylem — mesophyll
c_ root cortex— root hair cells + mesophyll — xylem
d root cortex — root hair cells xylem > mesophyll

22 what are methods for monitoring the activity of the heart?
measuring listening to sounds
ecg :
pulse rate of valves closing
a v x x key
b x v vv / =yes
c v x v x =no
d v v v

23 the diagrams show four different types of cells.
which cell contains haemoglobin?
a b
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q
e352? not to
scale
cc d
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24 what is a direct way of transmitting a pathogen?
a by contact with contaminated air
b_ by contact with contaminated blood
c_ by contact with contaminated food
d by contact with contaminated surfaces

25 the diagram shows the breathing system.
which structure is the diaphragm?
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26 what is the word equation for aerobic respiration?
a carbon dioxide + glucose > oxygen + water
b_ carbon dioxide + water — oxygen + glucose
c oxygen + glucose — carbon dioxide + water
doxygen + water — carbon dioxide + glucose

27 which diagram of the excretory system is labelled correctly?
a b
bladder (, r) bladder ( r)
| | ureter | | urethra
kidney kidney
urethra ureter
cc d
kidney ( r) kidney ck %
| | ureter | | urethra
bladder bladder
urethra ureter

28 the diagram shows an iris and a pupil in different light conditions.
iris
a ea eae pupil
light dark
which characteristic of living organisms is this an example of?
a growth
b movement
c_ excretion
d _ sensitivity

29 where is insulin secreted, and what is its effect on blood glucose concentration?
effect on blood
secreted by .
glucose concentration
a liver increases
b liver decreases
c pancreas increases
d pancreas decreases

30 the graph shows the number of cases of mrsa in one country between 2001 and 2006.

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2001 2002 2003 2004 2005 2006
year
between which years was the greatest change in the number of cases of mrsa?

a 2002 and 2003
b 2003 and 2004
c 2004 and 2005
d 2005 and 2006

31. which row describes an insect-pollinated flower?
a inside flower large and sticky inside flower
b outside flower large and sticky inside flower
c inside flower small and light outside flower
d outside flower small and light outside flower

32 which part of the female reproductive system releases egg cells?
a cervix
b_ ovary
c oviduct
d_ uterus

33 which adaptive feature of sperm provides the energy that enables it to swim?
a_ the acrosome
b the cell membrane
c the flagellum
d_ the mitochondria

34 what is a use of yeast in biotechnology?
a aerobic respiration to make biofuels
b_ anaerobic respiration to make bread
c aerobic respiration to make alcohol
d_ anaerobic respiration to make human proteins

35 many mammals have coloured fur and many birds have coloured feathers.
which uses of colour could help males survive long enough to pass on their features to their
offspring?
hiding from hiding from warning animals
animals which animals which that they are
might eat them they could eat poisonous
a v v v key
b v v x v =yes
c x v x x =no
d v x v

36 the list shows statements about selection.

1 individuals reproduce and pass on their alleles to the next generation.
2 genetic variation exists between individuals and many offspring are produced.
3 individuals struggle for survival and compete for resources.
4 individuals that are better adapted to the environment survive.
5 individuals with desirable features are selected by humans.

which statements are correct descriptions of natural selection?

a 1,2,3and4

b 1,2 and 5 only

c 2,3 and 4 only

d 3,4 and 5 only

37 some of the processes involved in the carbon cycle are listed.
1 combustion
2 decomposition
3 photosynthesis
4 respiration
during the carbon cycle, which processes release carbon dioxide into the atmosphere?
a 1,2and3 b 1,2and4 c 1and4 only d 2and3 only

38 what are the effects of sewage pollution on the biodiversity and the number of bacteria in a river?
[| bostersyrunr eras]
a decreases decreases
b decreases increases
c increases decreases
d increases increases

39 the increase of which gases contributes to an enhanced greenhouse effect?
a carbon dioxide and methane
b~ methane and nitrogen
c nitrogen and oxygen
doxygen and carbon dioxide

40 why are bacteria used in biotechnology?
a_ bacteria reproduce rapidly.
b_ bacterial cells contain a nucleus.
c_ bacterial cells contain cytoplasm.
d_ bacterial cells do not produce complex molecules.

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