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Y9
Revision Booklet 1
Mark Scheme
Microbes and Disease & Ecological
Relationships
8C & 8D
26 min
27 marks
Q1-L4, Q2-L4, Q3-L5, Q4-L5, Q5-L6, Q6-L6
1.
(a)
(b)
any one from
 bacteria
 viruses
 fungi
1
do not accept 'germs' or 'microbes'
(i)
to stop micro-organisms passing from Michael to the first-aider
1
accept 'bacteria' or 'viruses' or 'fungi'
or 'microbes' or 'germs' for micro-organisms
accept 'to stop blood getting on the firstaider'
(ii)
to stop micro-organisms passing from the first-aider's hands to the cut
or to Michael
accept 'bacteria' or 'viruses' or 'fungi' or
'microbes' or 'germs' for micro- organisms
accept 'rubber gloves are sterile or cleaner
than hands'
accept 'to prevent the spread of infection or
HIV or AIDS' as an alternative to one of the
answers only
1
[3]
2.
(a)
There is not enough light at X. 
if more than one box is ticked,
1
award no mark
(b)
flower
(c)
(i)
accept ‘ovary’ or ‘ovule’
the food chain must begin with the producer
any one from
 waterweed  tadpole  water beetle
 waterweed  tadpole  minnow
 waterweed  minnow  perch
GSHS
1
1
1
Y9
Revision Booklet 1
(ii)
Mark Scheme
award one mark for the predator (upper answer) and one mark for its prey
(lower answer)
either
 pike
 water beetle or tadpole or minnow or perch
2
or
 water beetle
 tadpole
or
 perch
 water beetle or minnow
or
 minnow
 tadpole
the mark for the prey may only be awarded if
it is directly linked to the predator in the
diagram
(d)
breathing or gas exchange
accept ‘take in oxygen’
1
movement or swimming
accept ‘balance’ or ‘steering’
1
[7]
3.
(a)
37°C
1
if more than one box is ticked, award no
mark
(b)
the lotion killed the bacteria
accept ‘they died’ or ‘they were killed
or destroyed’
1
(c)
the paper disc soaked in water
accept ‘the other disc’
1
(d)
any two from
 keep the lid on the dish
 seal or secure the dish
 wear gloves
 wear a mask or goggles
 use tweezers to add the paper disc
2
do not accept ‘do the experiment in a
fume cupboard’
[5]
4.
GSHS
(a)
(i)
microscopic plants  tadpoles  water boatmen  perch
or
microscopic plants  water fleas  small fish  perch
accept ‘plants’ or ‘microscopic’ for
microscopic plants
(ii)
microscopic plants
accept ‘plants’
1
1
2
Y9
Revision Booklet 1
(b)
decrease
Mark Scheme
accept ‘go down’
any one from
 more of them are eaten by perch
 perch would have no small fish to eat
accept ‘because the increased number
of water fleas eat more plants, there is
less food for tadpoles, therefore fewer
tadpoles’
1
1
[4]
5.
(a)
any one from
 there were not enough bacteria in the food or body
accept ‘the bacteria had to grow first’
 the bacteria multiplied by the next day
1
(b)
the antibiotic or medicine killed all the bacteria
accept ‘the antibiotics got rid of all the
bacteria’ or ‘there were no bacteria left’
1
(c)
any one from
 antibiotic or medicine had not killed all the bacteria
accept ‘not all the bacteria had gone’
 there were still bacteria left alive
 the bacteria multiplied
accept ‘the population rose again’
accept ‘they could grow again’
accept ‘they reproduced again’
1
any one from
 it slows down reproduction
1
(d)
1
accept ‘it stops them reproducing’
or ‘it stops them breeding’ or ‘it stops them
multiplying’
 it is too cold for the bacteria to divide or reproduce
accept ‘it stops them growing’
accept ‘slows down growth’
do not accept ‘they are dormant’
do not accept ‘it freezes them’
[5]
6.
GSHS
(a)
(i)
1950 and 1955
both dates are required for the mark
accept the dates in reverse order
accept ‘1945 and 1955’
do not accept ‘1945 and 1950’
1
(ii)
tar
accept a named recognised carcinogen
1
accept ‘carbon particles’
do not accept ‘nicotine’ or ‘carbon monoxide’
if both tar and nicotine are given award no mark
3
Y9
Revision Booklet 1
(b)
any one from
 immunisation
 vaccination
 BCG
 BCG injection
 BCG jab
 BCG shot
Mark Scheme
1
accept ‘inoculation’
do not accept ‘injection’
accept ‘TB jab’
do not accept ‘jab’
do not accept ‘shot’
do not accept ‘medicine
[3]
GSHS
4
Y9
Revision Booklet 1
Mark Scheme
Atoms and elements/compounds and
mixtures
8E & 8F
26 min
26 marks
Q1-L3, Q2-L4, Q3-L4, Q5-L6, Q6-L7
1.
(a)
4
It is lighter than air.
copper for the base
of a saucepan
It is a good conductor of heat.
gold for a ring
It is a good conductor of
electricity.
helium in a balloon
It stays shiny because it does
not react with oxygen.
mercury in a
thermometer
It is a liquid at room
temperature.
if more than one line is drawn from any
element, award no mark for that element
minimum mark zero
GSHS
5
Y9
Revision Booklet 1
(b)
Mark Scheme
helium
1
if more than one box is ticked, award no
mark
[5]
2.
(a)
N at top and S at bottom
both poles are required for the mark
(b)
1
1
S
N
S
all three poles are required for the mark
S
N
1
N
S
S
(c)
all five poles are required for the mark
(d)
accept ‘iron’
accept ‘nickel’
accept ‘cobalt’
steel
1
[4]
3.
(a)
(b)
very high melting point
answers may be in either order
1
good conductor of heat
do not accept ‘good conductor’
1
(i)
good conductor of electricity
do not accept ‘good conductor’
1
(ii)
can be compressed
1
[4]
4.
(a)
(i)
a mixture
1
if more than one box is ticked, award no
mark
(ii)
a compound
1
if more than one box is ticked, award no
mark
(iii)
any one from
 they are denser than the
liquid
1
accept ‘it is heavier than the liquid or the paint’
accept ‘the solid particles are more dense or
heavier or too heavy’
accept ‘the solid is denser’
do not accept ‘solid particles are heavy’
without a comparison or qualifier eg ‘too
heavy’
 the liquid is less dense than accept ‘the liquid is less dense’ or ‘the liquid is
the solid
lighter’
GSHS
6
Y9
Revision Booklet 1
(b)
Mark Scheme
any one from
 it is insoluble in water
 water is not a solvent for the paint
 it dissolves in white spirit
 white spirit is a solvent for the paint
1
‘it is waterproof’ is insufficient
[4]
5.
(a)
copper
oxygen
carbon
(b)
any one from
 copper sulphide
 copper oxide
 sulphur dioxide
 carbon dioxide
(c)
sulphur dioxide
1
answers may be in any order
all three elements are required for the mark
accept correct symbols for the elements
accept ‘sulphur' as one of the three elements
1
do not accept ‘carbon dioxide'
1
[3]
6.
(a)
(b)
(i)
A
1
(ii)
E
1
(iii)
C
1
any one from
 a compound contains two or more accept ‘a compound contains different
elements chemically combined
elements or atoms of different types
or bonded
joined together’
do not accept ‘a compound contains two or
more atoms joined together’
 a mixture contains two or more
elements or compounds or
substances not chemically
combined or bonded
1
accept ‘a mixture can be separated by
physical means’
‘a mixture can be separated’ is insufficient
(c)
(i)
any one from
 name: oxygen formula: O2
 name: hydrogen formula: H2
 name: nitrogen formula: N2
 name: chlorine formula: Cl2
1
accept any other element which exists as
diatomic molecules in the gaseous state
both the name and formula are required for
the mark
do not accept ‘O’ or ‘H’ or ‘N’ or ‘Cl’
GSHS
7
Y9
Revision Booklet 1
(ii)
Mark Scheme
any one from
 name: carbon dioxide formula: CO2
 name: water formula: H2O
 name: sulphur dioxide formula: SO2
 name: nitrogen dioxide or nitrogen oxide formula: NO2
1
accept any compound with the formula XY2,
eg magnesium chloride MgCl2
both the name and formula are required for
the mark
[6]
GSHS
8
Y9
Revision Booklet 1
Mark Scheme
Energy and electricity/gravity and space
9I & 9J
29 min
31 marks
Q1-L4, Q2-L4, Q3-L5, Q4-L6, Q5-L6
1.
(a)
(i)
four arrows, all towards the centre of the Earth
1
A
B
D
C
all four arrows, correctly drawn, are
required for the mark
the arrows may be drawn outside the Earth
(b)
(ii)
ball hanging towards the centre of the Earth at B, C and D
all three positions, B, C and D, are required
for the mark
1
(i)
365 days
accept ‘365’
1
(ii)
24 hours
accept ‘24’
1
[4]
2.
GSHS
(a)
(i)
5
1
(ii)
60
1
(iii)
thermal
accept ‘heat’
1
9
Y9
Revision Booklet 1
(b)
radio
(c)
light bulb
Mark Scheme
1
accept ‘bulb’ or ‘light’ or ‘lamp’
1
[5]
3.
(a)
(i)
circuit A: series
circuit B: parallel
1
both answers are required for the mark
(b)
(c)
(i)
the circuit or heating element will stop working
1
accept ‘it will not work’ or ‘it will be off’
accept ‘the whole circuit has no current through it’
accept ‘it becomes cooler’
do not accept ‘it breaks the heater or element or it’
(ii)
any one from
1
 the circuit or element will continue to work
 one wire will not heat the window
accept ‘the bottom one has no current through it’
‘nothing’ or ‘it will not be affected’ are insufficient
accept ‘it will work less well’
accept ‘the bottom wire becomes cooler’
do not accept ‘it becomes cooler’
do not accept ‘it does not work properly’
(i)
thermal accept ‘heat’
1
(ii)
from solid to liquid to gas
all three states are required for the mark
accept ‘from solid to liquid to vapour or steam’
accept ‘from ice to water to vapour or gas’
1
[5]
4.(a) (i)
the dots for Mars, the Earth and Venus should be in a straight line, the
shortest possible distance apart
1
Sun
V
Earth
M
GSHS
10
Y9
Revision Booklet 1
(ii)
any one from
 it is brightest
 it looks biggest or bigger
Mark Scheme
1
accept ‘it is brighter’
accept ‘it is bigger’
accept ‘you can see it at night’
(b)
gravity
1
(c)
any one from
 it is circular
 it is always the same distance from the Earth
1
(d)
winter
1
any one from
 the Northern hemisphere is tilted away from
do not accept ‘the Earth is tilted the Sun
away from the Sun’
 Britain is in the part of the Earth which is tilted away from the Sun
 the Sun’s rays hit the Earth at more of an angle
accept ‘the Sun appears lower in the sky’
angle
accept ‘night is longer than day’
1
[6]
5.
(a)
(b)
(i)
electrical to chemical
if more than one box is ticked, award no mark
1
(ii)
chemical to electrical to sound
if more than one box is ticked, award no mark
1
Q
R
P
1
1
1
[5]
6.
(a)
The first marking point is for the transfer of energy from water to turbine.
The second marking point is for the transfer of energy from turbine to generator.
The third marking point is for the transfer of energy away from the generator.
any two from
 potential energy in the water to kinetic energy in the turbine
accept ‘P.E. to K.E.’
accept ‘transferred from the water to the
turbine’
accept ‘K.E. in the water to K.E. in the
turbine’
accept ‘P.E. in the water to K.E. in the
water’
 kinetic energy in the turbine to kinetic energy in the generator
accept ‘transferred from the turbine to the
generator’
GSHS
2
11
Y9
Revision Booklet 1
Mark Scheme

 kinetic energy in the generator to electrical energy in the circuit
accept ‘KE. to electrical energy’
accept ‘from the generator to the circuit’
accept ‘transferred from the generator by
electricity’
accept ‘KE. in the turbine to electrical
energy in the circuit’
accept ‘potential energy in the water to
electrical energy in the circuit’ for both
marks
accept ‘P.E. to electrical energy’
or ‘from the water to the circuit’ for one
mark
(b)
any one from
 because the Moon’s pull or gravity is always there
 because the tides or the water cannot run out or be used up
accept ‘because there are tides every day’
or ‘because there is an endless supply’
1
(c)
• from wave energy or from the waves
accept ‘Ocean Thermal Energy Conversion’
or ‘OTEC’
do not accept ‘hydro-electric power’
1
(d)
it is easier to control or it can be turned on when it is needed
accept ‘the tides only give power at certain
times’ or ‘you can build an oil-fired power
station anywhere’ or ‘it is smaller`
1
any one from
 oil is non-renewable
 it causes pollution
accept ‘oil will run out’
accept ‘it gives out greenhouse gases’
or ‘it can cause oil spills’
[6]
GSHS
12