biology

1 the diagram shows a leaf on a plant.

ss we
simple sugars # | %
made in the leaf //

water from carbon dioxide
the soil from the air
which characteristic of life is represented by this diagram?
a excretion
b nutrition
c_ respiration
d- sensitivity

2 which description of a species is correct?
a agroup of organisms that can reproduce to produce fertile offspring
bagroup of animals that can produce genetically different offspring
c a group of organisms living in the same area at the same time
d all of the populations in an ecosystem

3. the diagram shows a dolphin.
dolphins are mammals that live in the sea.
which row correctly identifies some of the features of dolphins?
organ of gas f

| | aa | pee me
a gills no
b gills yes
c lungs no
d lungs yes

4 which structures are found in an animal cell?
[inn | me [oan a [om [aoe
a yes yes yes no no no
b yes no no no yes yes
cc no yes no no no yes
d no no yes yes no no

5 what is the function of ciliated cells in the bronchi?
a to absorb oxygen
b_ to digest pathogens
c  tomove mucus
d_ to produce antibodies

6 the diagram shows an organism called a copepod. the magnification of the diagram is x30.
x
fae
ce
u
3
\
¥
the length of line xy is 45mm.
what is the actual length of the copepod?
a 0.67mm b 1.5mm cc 15mm d 1350mm

7 some molecules move through a membrane during osmosis.
which row shows the molecule that moves and the type of membrane?
a oxygen partially permeable
b oxygen permeable
cc water partially permeable
d water permeable

8 whatis a feature of active transport?
a it requires energy from respiration.
b_itinvolves the random movement of molecules.
c substances are moved down a concentration gradient.
d_ water is the only substance moved by this process.

9 which substances are made by linking together glucose molecules only?
a cellulose, glycogen and starch
b fats, cellulose and proteins
c proteins, oils and glycogen
d © starch, fats and oils

10 four solutions were tested to see if they contained protein, starch or glucose.

the colours of the solutions after the tests are recorded in the table.

which solution contained protein and glucose but not starch?

[| tretest [iin sation test [ benedetssouton test
a blue yellow-brown brick-red
b blue blue-black blue
cc purple yellow-brown brick-red
d purple blue-black blue

11. which type of biological molecule are enzymes made of?
a carbohydrate
b fat
cc oil
d protein

12 the diagrams show molecules involved in the action of a digestive enzyme.
what is the substrate?
a b cc d

13 the graph shows how the activity of an enzyme varies with temperature.
rate of
enzyme
activity
0 10 20 30 40 50 60 70
temperature /°c
what is the optimum temperature for this enzyme, and at which temperature is the enzyme
completely denatured?
temperature /°c
’ completely
sphinn denatured
a 30 0
b 30 60
cc 50 0
d 50 60

14 an experiment is set up as shown.
e small plant
2
ae
ae
gauze platform
green
indicator
test-tube x test-tube y
the green indicator:
e turns yellow when the carbon dioxide concentration increases
e turns blue when the carbon dioxide concentration decreases.
after several hours, the indicator in test-tube x turned blue. the indicator in test-tube y remained
green.
which process caused the colour change?
a germination
b_ photosynthesis
c_ respiration
d transpiration

15 what is a description of transpiration?
a __ the breakdown of nutrient molecules to release energy
b the flow of energy through living organisms
c_ the loss of water vapour from leaves
d_ the pressure of water inside cells pressing outwards on the cell wall

16 the photomicrograph shows a cross-section through a leaf.
which structure is the cuticle?
a
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17 what is lacking in the diet of a person with scurvy?
a calcium
biron
c_ vitamin c
d_ vitamin d

18 what is a part of the small intestine?
a anus
b_ colon
c_ ileum
d- rectum

19 the diagram shows the apparatus used in an experiment to demonstrate two processes that take
place in the body.
test-tube
pure water
dialysis tubing ends eevee eet
tightly sealed
mixture of saliva
and starch solution
after one hour, the water outside the dialysis tubing contained reducing sugars.
which two processes are represented by this experiment?
a absorption and digestion
b_ absorption and egestion
c_ digestion and egestion
d_ digestion and ingestion

20 which row identifies the four types of human teeth shown?
1 2 3 4
| ,
ee ee ee
a canine incisor molar premolar
b premolar incisor molar canine
cc canine premolar incisor molar
d premolar molar incisor canine

21 the diagram shows the human digestive system.
p es
see
q
7 ae
ly r
( ai
jie"
} e |
which letters show where amylase acts during digestion?
a pandr b pands c qandr d qandt

22 which row describes transport in a plant?
transport tissue
: : substances
transport tissue found ina
transported
vascular bundle
a phloem yes sucrose and
amino acids
b phloem no water and
mineral ions
cc xylem yes sucrose and
amino acids
d xylem no water and
mineral ions

23 in humans, which structures provide cells with oxygen and nutrients?
a arteries
b_ capillaries
c_ lungs
d_ veins

24 the diagram shows part of the human circulatory system.
head
l——
——,
o=e
6 <>
qz? 1
ws al
| ow |
is z|
4 <—s
3 }
ao
legs
what are the numbered blood vessels?
|_| vencava | puter | rena ater
vein
a 5 6 4
b 2 1 3
cc 5 1 3
d 2 6 4

25 some methods of transmitting pathogens are listed.
1. drinking contaminated water
2 contact with another person’s blood
3. contact with another person’s saliva
4 touching contaminated surfaces
how many are indirect methods of transmitting pathogens?
a none
bone
cc two
d_ three

26 which substances are used and produced in aerobic respiration in a plant cell?
sesion seta
aerobic respiration aerobic respiration
a carbon dioxide and glucose oxygen and water
b carbon dioxide and water glucose and oxygen
cc glucose and oxygen carbon dioxide and water
d glucose and water carbon dioxide and oxygen

27 which organ excretes urea?
a bladder
b_ kidney
csiiver
d_ lung

28 which statements about hormones are correct?
1 the ovaries secrete oestrogen.
2 the pancreas secretes adrenaline.
3 the pancreas secretes insulin.
a 1and3 b= 1only c 2and3 d 2only

29 the diagram shows a plant shoot growing towards the light.
as <—light
what is the name of this plant shoot’s response to light?
a gravitropism
b_ photosynthesis
c_phototropism
d-reflex

30 parts of an insect-pollinated flower are listed.
1 anther
2 filament
3. stigma
4 style
which parts are in a carpel?
a iand2 b 1and3 c 2and4 d 3and4

31. what is treated with antibiotics?
a a bacterial infection
b rickets
c sscurvy
d a viral infection

32 which statement describes asexual reproduction?
a __ the production of genetically different offspring from one parent
b_ the production of genetically different offspring from two parents
c the production of genetically identical offspring from one parent
d_ the production of genetically identical offspring from two parents

33 in humans, why are sperm cells produced in much greater numbers than egg cells?
a many sperm cells are needed to fertilise an egg cell.
b_ sperm cells are small in size.
c_ sperm cells are non-motile.
d_ the chance of one sperm cell reaching an egg is very small.

34 what is the ball of cells that implants into the lining of the uterus during sexual reproduction in
humans?
a embryo
b gamete
c_ placenta
d_ zygote

35 which sex chromosomes need to be present in a sperm cell to produce a male offspring?
a xonly by only c xx d xy

36 abo blood groups are an example of one type of variation.
what is the cause of this type of variation?
a environment only
bs genes only
c_ genes and environment
d- mutation and environment

37 which statement is an example of natural selection?
a_ choosing donkeys with desirable characteristics to breed
b_ choosing to cross-pollinate wheat plants with the highest yields
c inserting genes into a crop plant to improve its nutritional qualities
d _inwild flowers, the development of petals that look like insects to attract pollinators

38 the graph shows the increase in the human population of the world since 1630.
vo 1 ti
‘ooo! | | 1 ty
4000
popuiaton on) | |
rere mt tt tt ve
‘om | ll et i
1000 = |
ort | tl |
1630 1730 1830 1930 2030
year
what was the longest time taken for the population to double?
a 100 years b 200 years c 300 years d 400 years

39 lichens are organisms that do not grow well in polluted air.
which graph shows the change in the number of lichen species from the centre of a polluted city
to the unpolluted countryside 15km away?
a b
number number
of lichen of lichen
species species
0 15 0 15
distance from distance from
city centre/km city centre/km
cc d
number number
of lichen of lichen
species species
0 15 0 15
distance from distance from
city centre/km city centre/km

40 which trophic level describes an organism that only eats herbivores?

a producer

b primary consumer

c_ secondary consumer

d tertiary consumer
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