biology

1 living animals release carbon dioxide.
this is an example of which life process?
a excretion
b movement
c nutrition
d sensitivity

2 some statements about species are given.

1 members of a species all look identical.
2 members of a species belong to the same genus.
3 members of a species can produce fertile offspring.
4 species are named using an international system.

which statements are correct?

a 1,2,3and4

b 1,2 and 3 only

c 2and4 only

d 2,3 and 4 only

3 the table shows some features of different animals.
which animal is a reptile?
wings hair scales
a x x jv
b x x x
cc v x v
d x v x

4 which structures are found in the cells of all living organisms?
1 cell membrane
2 chloroplast
3 cytoplasm
a 1,2and3 b tand2only c 1and3only d = 2and3only

5 a diagram of a human red blood cell is shown. the length of line xy on the diagram is 40mm.
the actual width of the cell is 0.008 mm.
rh
x ¥
what is the magnification of the diagram?
a x500 b  x5000 c ~x50000 d ~x500000

6 which statements are correct for both diffusion and osmosis?
involves requiresenee molecules move from
movement of q nergy higher concentration to
from respiration :
water only lower concentration

a v v v key
b v v x jv =yes
cc x x v x =no
d x x x

7  whatis a role of water in digestion?
a itis an enzyme.
b_itis a solvent.
c_itis soluble.
d_itis a mineral.

8 the concentration of sodium ions in the soil is lower than the concentration inside root hair cells.
which process will be used when sodium ions are taken into root hair cells from the soil?
a active transport
b_ diffusion
c_ osmosis
d transpiration

9 the diagram represents a protein molecule.
what do the small circles represent?
a amino acids
b fatty acids
c glycerol
d simple sugars

10 which processes depend on the action of enzymes?
1 digestion
2 osmosis
3 respiration
a iand2 b 1and3 c 1only d 2and3

11 which diagram of an enzyme, active site and substrate is correct?
a b
substrate enzyme
enzyme active
site
active site substrate
cc d
substrate enzyme
enzyme active
site
active site substrate

12 four test-tubes are set up as shown.
which test-tube contains the least carbon dioxide after one hour?
a b cc d
[| nate [pl
water polythene
; to keep
aquatic —{{" gl] outtiont hy y
imal ms, ; y : ;

anima y y g yy light —> g vy —=— light —~ ~—+— light
aquatic s ob a
plant sr as as

13 which row shows the uses of some carbohydrates in plants?
| aucose [starch [sucrose |
a cell walls transport energy storage
b energy storage cell walls respiration
cc respiration energy storage transport
d transport respiration cell walls

14 the lack of which component of a balanced diet will lead to the development of scurvy?
a calcium
biron
c_ vitamin c
d_ vitamin d

16 the food label is from a packet of cereal.
the label can help someone who is concerned about their diet.
nutrition
typical values 100g
contains
energy 985 kj
235 kcal
fat 1.59
of which saturates 0.3g
carbohydrate 45.5g
of which sugars 3.8g
fibre 2.8g
protein 7.79
salt 0.5g
a person eats 45g of cereal.
one of the food types listed in the label can help prevent constipation.
how many grams of this food type does the person eat?
a 1.3g b 2.8g c 3.5g d 7.7g

17. which pathway is taken by water through a plant?
a root hair — root cortex — xylem — mesophyll — stomata
b_ root hair > xylem > mesophyll > root cortex > stomata
c stomata — root cortex — xylem — mesophyll > root hair
d_ stomata > root hair > root cortex — xylem > mesophyll

18 which row shows the transpiration rate for the conditions described?
om eas
a low low fast
b high high slow
cc low high slow
d low low slow

19 the diagram shows the human heart.
which label shows the left ventricle?
d
a
b
cc

20 which row shows the features of an artery or a vein?
diameter thickness
blood vessel
of lumen of wall
a artery large thick
b artery small thin
cc vein large thin
d vein small thick

21 what are features of gas exchange surfaces in animals?
a thick-walled and large surface area
b _ thick-walled and small surface area
c thin-walled and small surface area
d thin-walled and large surface area

22 which chemical can be used to show the presence of carbon dioxide gas?
a_ benedict’s solution
b _ biuret solution
c_ ethanol
d _limewater

23 the diagram represents the exchange of gases during breathing and during respiration in the
body.
oxygen
oxygen in blood
cattsan carbon dioxide
dioxide '
in blood
what is represented by x?
a _ heart
b_ kidneys
csiiver
d_ lungs

24 which molecule is produced by anaerobic respiration in yeast?
a carbon dioxide
b lactic acid
c oxygen
d_ water

25 the diagram shows the human body and some of its organs.
which structure removes urea from the blood?
a
== ye

are

ig

- se b
thr |
°

26 the diagram shows the structures in a reflex arc.
x
0 neal
= yj
j see

what is x?
a effector
b_ relay neurone
c sensory neurone
d_ synapse

27 changes in light intensity cause changes in the diameter of the pupil in the eye.
which rows show the pupil reflex?
| | light intensity pupil diameter
1 high increases
2 high decreases
3 low increases
4 low decreases
a iand3 b 1and4 c 2and3 d 2and4

28 a hormone is injected into a person to reduce their blood glucose concentration.
which endocrine gland is not functioning properly in a person who needs to have this injection?
a adrenal gland
b_ ovary
c pancreas
d testis

29 the table shows which antibiotics are effective against different types of bacteria.
the shaded areas show the antibiotic is effective against that type of bacteria.
type of bacteria
1
2
3
4
5
6
a person has a disease caused by a type of streptococcus bacteria and a second infection
caused by a type of pseudomonas bacteria.
which antibiotic should be taken?
a 1or6 b 2or4 c 30r4 d 5o0r6

30 the diagram shows one way that a plant can reproduce.
ma zy
zn
what is a feature of this type of reproduction?
a the offspring show genetic variation.
b_ only one parent is required.
c_ offspring are easily dispersed over a wide area.
d_ pollination by insects is required.

31 which human characteristics are inherited?
| bee | ski | wraiece | aoe
anguage sex
group colour
a v v x v key
b j v j x ¥ = inherited
cc x jv x v x = not inherited
d jv x jv v

32 in asperm cell, which structure contains enzymes that can digest the jelly coat of an egg cell?
a acrosome
b flagellum
c_ mitochondria
d nucleus

33 when breeding, which pair of parents will be pure-breeding for a particular characteristic?
a aheterozygous and a homozygous individual
b_ two heterozygous individuals
c_ two homozygous individuals
d two individuals with the same phenotype

34 ina pea plant, the allele for round seeds, r, is dominant to the allele for wrinkled seeds, r.
if plants with the genotype rr are crossed, what are the likely proportions of offspring?
a all with round seeds
b all with wrinkled seeds
c1 with round seeds: 1 with wrinkled seeds
d  3.with round seeds: 1 with wrinkled seeds

35 which definition of continuous variation is correct?
a variation that results in a limited number of phenotypes between two extremes
b variation that results in a limited number of phenotypes with no intermediates
c variation that results in a range of phenotypes between two extremes
d variation that results in a range of phenotypes with no intermediates

36 which term is used to describe an organism that makes its own organic nutrients?
a carnivore
b  decomposer
c herbivore
d producer

38 a single tree is food for a large population of caterpillars. several small birds eat the caterpillars.
the small birds are eaten by a bird of prey.
which is the pyramid of biomass?
a b
cc d

39 the diagram shows the results of a survey on the types of animals found along a stretch of river
near to a factory.
ae
direction of
water flow
coor
. mayfly nymph
i stonefly nymph
factory emptying
pollutants into
the water

rat-tailed maggot bloodworm

sludge worm leech

bloodworm water louse

snail
shrimp
caddisfly larva
mayfly nymph
stonefly nymph

which animal lives in the least polluted water?
a_ bloodworm
b_caddisfly larva
c_ leech
d _ stonefly nymph

40 bacteria are useful for manufacturing products for human use.
which statement explains why they are useful?
a_ bacteria can be grown without nutrients.
b_ bacteria do not have a nucleus.
c_ bacteria infect human cells.
d_ bacteria reproduce very rapidly.

Solve 0610_s23_qp_12