AQA Biology Unit 1 - Unofficial Mark scheme

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1. (Original post by habeeb_00)
Independent company would be unaffiliated with the drug company

Legal, recreational

Boys drink more beer, lager, cider than girls, girls drink more of everything else

It's too small a sample size

Fat - store of energy and warmth
Carbs/sugars - used for energy through respiration
Proteins - growth, repair of cells, replacement of old ones
Fibre - used to aid digestion

Skin is sense organ for spinal cord

80/50 = 1.6 for neurone speed

That's jumbled up - what did ya get for the horses one
For the six marker:
Ther are seven food groups: carbs, fats, protein, minerals, vitamins, fibre and water.
One was already given (minerals) so id presume the 6 left would be one for each mark - name and explanation.

Carbs - provide energy
Fats - store energy, insulate us, protect vital organs
Protein - build and repair tissues such as bones and muscle
Vitamins - general health
Fibre - regular bowel movement
Water - maintain fluid level, regulate body temperature
2. (Original post by Anmol_.)
Yes those GBs are totally u realistic. I personally feel the grade boundaries should be slightly lower this year compared to last year so should be around 45 for an A*
That would be ****ing lovely
3. Does anyone remember the order of the boxes for number 1, I think I ticked the wrong one
4. For the percentage of people that died from malaria the correct answer was 0.667% correct to 3 SIGNIFICANT FIGURES.

3 x 10^8 people infected with malaria = 300,000,000

2 x 10^6 people died from malaria = 2,000,000

Therefore percentage of people that died was (2,000,000/300,000,000) x 100% = 0.00666666667 x 100% = 0.667% (3s.f.)

In my exam I f****** forgot to multiply the fraction by 100 to get the percentage. I didn't click the equals button ffs and thus I put 0.07%. I showed working out though so that should count for a mark.
5. (Original post by lunaticash19995)
I thought you had to times by 100
Same, so there's me writing 66.7%
6. (Original post by guy321)
For the percentage of people that died from malaria the correct answer was 0.667% correct to 3 SIGNIFICANT FIGURES.

3 x 10^8 people infected with malaria = 300,000,000

2 x 10^6 people died from malaria = 2,000,000

Therefore percentage of people that died was (2,000,000/300,000,000) x 100% = 0.00666666667 x 100% = 0.667% (3s.f.)

In my exam I f****** forgot to multiply the fraction by 100 to get the percentage. I didn't click the equals button ffs and thus I put 0.07%. I showed working out though so that should count for a mark.
I put 66% not 67
7. (Original post by samiah12345)
What do you think the grade boundaries will be i hope its like the 2014 grade boundaries
The grade boundaries will probably be lower since last year was quite high- A* was 47/60, and also loads of people found it hard. So I think about 44 or 45?
8. (Original post by binguchoi)
for the last question I put invertebrates, is that right?
I put that... and the question before as lichens... idk if that right did they hvae to be two different ones so one living and other non living
9. Posted from TSR Mobile

Why three significant figures?
10. (Original post by HonourableDorito)
Skin would be a better answer, but hand is probably fine.
I put any part of the limbs e.g hands or knee reflex
11. (Original post by Annatogunx)
Does anyone remember the order of the boxes on the first question, I think I ticked the wrong one
I believe the bottom/last box was the correct one (legal, recreational)
GJ AQA
13. (Original post by samiah12345)
What do you think the grade boundaries will be i hope its like the 2014 grade boundaries
14. Judging by unofficial mark scheme and my own knowledge, I'm looking at around 52-53/60. Any ideas what grade this would be?
15. (Original post by binguchoi)
The grade boundaries will probably be lower since last year was quite high- A* was 47/60, and also loads of people found it hard. So I think about 44 or 45?
Fingers crossed
16. For Question 16 the mean speed would be the results added together then divided by how many results there were wouldn't it? So, 80+50 / 2 ...?
17. For the 6 Mark Question I said:

Carbohydrates - Gives us energy
Fats - Provides important sugars
Vegetables and Fruits such as Oranges which gives us Vitamin C
Proteins - Used for cell growth and repair
Then I couldn't think of any others so I just put Cholesterol and in brackets I put '(good cholesterol - high density lipo protein)' - used to help to make cell membranes.

How many marks out of 6 for my answer?
18. (Original post by lilyflowerxoxo)
What did people get for the question about all boys drinking and why was the hypothesis not valid??
The hypothesis said that all boys drank alcohol but the survey was only asking 15 year old boys- that's what I said anyway
19. (Original post by HonourableDorito)
Posted from TSR Mobile

Why three significant figures?
It didnt say anything about sf so i dont think it matters
20. (Original post by Annatogunx)
Does anyone remember the order of the boxes for number 1, I think I ticked the wrong one
Think you had to tick second to last

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