biology

1 some yeast, sugar and water are mixed in a test-tube. the diagrams show the test-tube at the start
and after one hour.
oe bubbles
ea of gas
yeast, sugar loos°
and water q°80
ovo
lo
os)
at start after one hour
which process causes this change?
a growth
b reproduction
c_ respiration
d - sensitivity

2. the diagram shows an animal.
ayr vp, les
\ \ } an <=
why we
7 \
‘ \
use the key to identify the animal.
2 has antennae much shorter than legs a |
has antennae about the same length as legs bi
3 has feathery antennae
has smooth antennae | po |

3 donkeys and zebras are different species. they can breed to produce an animal called a zedonk.
zedonks are not fertile.
which statement is correct?
a zedonks and donkeys are the same species.
b  zedonks and zebras are the same species.
c  zedonks are a species.
d  zedonks are not a species.

4 crabs are arthropods with 10 jointed legs and two pairs of antennae.
to which arthropod class do they belong?
a arachnids
b_crustaceans
c insects
d_ myriapods

5 heart muscle cells have a high rate of metabolism.
which structure do they require to be present in high numbers?
a chloroplasts
b~ mitochondria
ccell walls
d_ vacuoles

6 the diagram shows a fly.
xx y
oie
se 4 1
sag img
& werte
ax \
the line xy represents the length of the wing.
the length of line xy is 26mm.
the actual size of the wing between x and y is 4mm.
what is the magnification of the diagram?
a x0.15 bx6.5 c x22 d = x104

7 what is an example of diffusion?
a dust particles being moved by ciliated cells in the trachea
b oxygen molecules moving into a red blood cell in the lungs
c pollen grains moving from anthers to stigmas in the wind
dred blood cells moving in a blood capillary in a muscle

8 the diagram shows apparatus used to investigate osmosis.

the volumes of solutions a, b, c and d were the same at the start of the investigation.
after one hour, the solutions had moved up the glass tubes.
which solution was the most concentrated at the start of the investigation?

glass glass glass glass

tube tube tube tube

partially partially
permeable permeable
membrane membrane
water
solution solution solution solution
a b c d

9 which row describes active transport?
movement of uses energy movement through
water from respiration a cell membrane
a yes no no
b yes no yes
c no yes no
d no yes yes

10 lodine solution is added to a food sample that contains starch.
what is the colour of the sample after the iodine solution has been added?
a __ blue-black
b purple
cred
d_ yellow

11. which graph shows the effect of temperature on the activity of an enzyme?
a b
enzyme enzyme
activity activity
0 50 100 0 50 100
temperature /°c temperature /°c
cc d
enzyme enzyme
activity activity
0 50 100 0 50 100
temperature /°c temperature /°c

12 which of these statements about enzymes are correct?
1 enzymes are proteins
2 enzymes are used up during chemical reactions
3 enzymes speed up metabolic reactions
a 1,2and3 b jiand2only c 1and3only d 2and3only

13 the diagram shows a cross-section of part of a leaf.
which cell controls the rate of gas exchange?
— __ a od
| rig
28:
hecbut js
= ey pe fed

-—) san

s gi 4 ns

poo sss
b

14 the diagram shows two cells.
@_®@
®
e @
0)
@)
®_e
which process happens in only one of these cells?
a controlling the chemical reactions in the cell
b_ controlling the movement of substances into the cell
c_ making starch inside the cell
d using glucose inside the cell

15 which organ is part of the digestive system?
a colon
b larynx
c_ vena cava
d_ ureter

16 the diagram shows the human alimentary canal.
where is most digested food absorbed into the blood?
vat a
ee
5 i
| \ —-b
| ee

17. which layer is dentine in the diagram of a human tooth?
b
bir cain
pe" s
d

18 the diagram shows a human jaw.
which labelled tooth is an incisor?
b
ae fe
p oy 4 ir
4 » whe vas
<< - *
a ul b hy,
j . os
a 2) ls ie"
a 2) < c¥)
ss % d
ae . —~
5 —/

19 where does protease act?
—~f)
—™ nae:
| ©

20 which statement describes transpiration?
a_ water is pulled upwards by active transport.
b_ water is pulled up from the roots by phloem.
c water moves by osmosis inside the xylem vessels.
d_ water vapour diffuses out of the leaves.

21 which statement describes the circulation of blood in the human body?
a blood is pumped away from the heart by the atria.
b_ blood is pumped away from the heart through arteries.
c_ blood is pumped away from the heart through veins.
d_ blood is pumped to the heart through capillaries.

22 which method of pathogen transmission is direct?
a breathing in pathogens in air
beating contaminated food
c_transfusing contaminated blood
d touching a door handle that has pathogens on it

23 which statement describes anaerobic respiration?
a_ anaerobic respiration in humans produces lactic acid and carbon dioxide.
b_ anaerobic respiration in yeast produces water and carbon dioxide.
c_ anaerobic respiration releases energy from glucose without using oxygen.
d_ anaerobic respiration releases more energy per glucose molecule than aerobic respiration.

24 which organ is responsible for the excretion of urea in the human body?
“te n
; vv
d
c —~
| f "pe

25 which part of the eye contains light receptors?
a cornea
b iris
ciens
d retina

26 which row shows the effects of adrenaline secretion?
|| pupil diameter heart rate
a decreases decreases
b decreases increases
c increases decreases
d increases increases

27 aplant pot is placed on its side.
which diagram shows a plant with roots showing gravitropism and shoots showing phototropism?
a b
light light
yw
kk
q qa 7a,
z
{lk n |-
as)
cc d
light light
nz
akl
a q q
ale ales
dy

28 the graph shows how the percentage effectiveness of antibiotic f against mrsa bacteria varied
between 1980 and 2000.
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: 0 a
effectiveness fn a a pe ae, a a nf on a
of antibiotic | _70-peceeeeceee eee eee cen eee eee eee
against mrsa fo fc csp
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1980 1990 2000
time/year
what is a correct conclusion from the graph?
a_ antibiotic f was completely ineffective against mrsa in 2000.
b_ antibiotic f was most effective in 1982.
c mrsa developed resistance to antibiotic f between 1981 and 2000.
d_ the greatest decrease in effectiveness of antibiotic f against mrsa was between 1988
and 1990.

29 which statement describes asexual reproduction?
a gametes are involved in this type of reproduction.
b_ offspring are genetically different from each other.
c_ offspring are genetically identical to the parent.
d_ two parents are required for this type of reproduction.

30 what is the function of the acrosome in a sperm cell?
a_ the acrosome contains enzymes that digest the jelly coat of an egg cell.
b_ the acrosome is needed for the sperm cell to move.
c_ the acrosome releases energy.
d_ the acrosome stores genetic information.

31. which diagram shows fertilisation?
a b
cs) key
() female gamete
c d @~~_ male gamete
( e~ (<|e) c) nucleus

32 what is hiv?
a a bacterium
b  anenzyme
c apathogen
dan antibody

33 what describes an allele?
a_analternative form of a chromosome made of dna
b_analternative form of a chromosome made of protein
c_ analternative form of a gene made of dna
dan alternative form of a gene made of protein

34 the images show four animals.
1 2
| .~ i
ae eg “ : 2 ae | ie 2 y"
: : 4 ac =" -— : = : ei " :
eo i $ 4% : ‘
4 *. ge tt — ss
sheep eagle
3 4
*,. s ae is i 7 abe.
x te bs ote ee
pen fok 4 baa
a rg
or ae f- » bol) ve sng 252)
- ae & onan 4 vie
~ mee ls om et 4
ying 4 a “8 ‘ j j
wy / <a baan = e) sw
dea eos ee
tortoise tiger
which two animals show adaptive features for being secondary consumers?
a iand3 b 1and4 c 2and3 d 2and4

35 agene is added to the genetic material of an avocado plant.
this gene makes the avocado fruits stay ripe for longer before they start to decompose.
what is this process an example of?
1 adaptation
2 genetic modification
3. selective breeding
a 1,2and3 b 1and3only c 2only d 3only

36 the diagram shows a food chain.
plant leaf > slug — frog — fox
which terms describe the position of the fox in this food chain?
a | quaternary fourth
b tertiary third
cc quaternary third
d tertiary fourth

37 these are processes found in the carbon cycle.
* combustion
* decomposition
* feeding
* photosynthesis
* respiration
how many of these processes release carbon dioxide into the atmosphere?
a 1 b 2 cc 3 d 4

38 which change occurs when areas of forest are cleared for farming?
a_ decreased release of carbon dioxide into the atmosphere
b _ increased biodiversity
c increased loss of soil
d increased release of oxygen into the atmosphere

39 what is a use of ethanol?
a __ biofuel production
b biological washing powder
c_bread-making
d - fruit juice production

40 the diagram shows a label found on a container of biological washing powder.
biological washing powder
* works at low temperatures
* contains protease
* contains lipase
—— * keep out of reach of children ;
which stains does the washing powder remove?
food stain food stain food stain :
ts 1 a food stain
containing containing containing containing oil
carbohydrates protein fat 9
a v v x x key
b v x x v v =yes
cc x v v v x =no
d x x v x

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