Y9 answers to questions set on Tuesday

1. (a) (i) Katie both answers are required for the mark 1Becca if more than two boxes are ticked, award no mark
(ii) any one from 1· their mother or Pam has freckles· their father or David has freckles· their parents have freckles· their grandmother or Mary has freckles· only family B has freckles
accept ‘Rachel and Bill do not have freckles’accept ‘a grandparent has freckles’accept ‘their family or the family on the right has freckles’accept ‘freckles run in the family’accept ‘family A does not have freckles’
(iii) his parents or Bob and Emily do not have freckles 1
accept ‘his family does not have freckles’accept ‘his grandparents do not have freckles’accept ‘he is not in family B’ if the answer for (ii) is ‘only family B has freckles’
(b) (i) egg cell both answers are required for the mark 1sperm cell if more than two boxes are ticked, deduct one mark for each incorrect tick minimum mark zero
(ii) reproductive system if more than one box is ticked, 1 award no mark
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2. (a) (i) any one from 1
· lemonade
· fruit juice accept ‘fruit or juice’
(ii) any one from 1
· milk
· water
(b) (i) any one from 1
· blue
· dark blue
· purple
(ii) any one from 1
· it bubbled accept ‘it fizzed’
· bubbles were formed accept ‘bubbles’
accept ‘effervescence’
(c) neutralisation 1
if more than one box is ticked, award no mark
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3. (a) (i) A 1
(ii) D 1
(iii) E 1
(iv) G 1
accept ‘Jupiter’
(b) (i) a bar drawn to 12 N/kg 1
the top of the bar must be in the middle third between 10 and 15
(ii) any one from 1
· Jupiter
· Saturn
· Neptune
(iii) Jupiter 1
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4. (a) 3

if more than one line is drawn from any one force award no mark for that force
(b) 800 1
accept ‘80 x 10’
(c) any one from 1
· it weighed more
· the mass was greater accept ‘it was heavier’
· it weighed less at the end accept ‘it only weighed 130 at the end’
accept ‘there was more food or fuel or supplies’
accept ‘more pressure’
(d) any one from 1
· they spread out the weight accept ‘they do not sink into the snow’
accept ‘wheels sink’
· they have a bigger surface or area
· they can slide easily
accept ‘they reduce the pressure’
accept ‘less friction’
‘they are bigger’ is insufficient ‘it can slide’ is insufficient
(e) any one from 1
· there is a bigger surface or area
· there is a bigger force
· it catches more air or wind
do not accept ‘there is more air resistance’
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5. (a) (i) the water or it went blue accept ‘it changed colour’ 1
accept ‘it got darker’
accept ‘there were fewer crystals’
accept ‘some of the crystals or copper sulphate disappeared’
(ii) any one from 1
· stir it
· heat it
· use hotter water accept ‘use warm water’
· grind up or crush the crystals
(b) any one from 1
· crystals
· copper sulphate accept ‘solid’
(c) (i) 10 1
(ii) Q 1
(iii) P and Q 1
answers may be in either orderboth answers are required for the mark
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6. (a) · X-axis: time (minutes) 1 Y-axis: temperature (°C)
· appropriate scales such as 2 cm represents 10°C, 2 cm represents 1 minute 1
· 11 points plotted to within half a small square 1
· a smooth curve of best fit (not dot-to-dot) 1
pupils can gain credit for correct responses to other parts if the axes are wrongly labelledboth answers are required for the mark
units are required for the mark
at least one zero must be includedat the origin
(b) an answer consistent with the drawn curve 1
accept a tolerance of one small square
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7. (a) any one from 1
· it is the temperature of the human body or the stomach
· the enzyme or pepsin works best at that temperature
(b) there was a larger surface for the enzyme to act on 1
accept ‘the enzyme came into contact with more of the gelatin’
accept ‘the surface or area was bigger’
‘because the gelatin had been chopped up’ is insufficient
(c) it or the enzyme was destroyed or denatured 1
do not accept ‘the enzyme was killed’
(d) amino acids 1
if more than one box is ticked, award no mark
any one from 1
· proteins cannot be absorbed
· proteins are too big to pass through the lining of the intestine or blood vessels
accept ‘so proteins or they can be absorbed’
· amino acids can be absorbed
· amino acids can pass through the wall of the intestine or blood vessels
· amino acids are small enough to be absorbed
· to make them soluble
‘they need to be digested or broken down’ is insufficient
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