# AQA AS Biology 7401/1 and 7401/2 Exam - 26th May and 7th June 2016 watch

1. What did you his get for the beats per minute? I got 60
2. (Original post by laney1999)
What did you his get for the beats per minute? I got 60

It was 66.7
3. (Original post by laney1999)
For marking points id say

• Genetic code is degenerate= more than one set of 3 bases can code for an amino acid.

• deletion causes frame shift = mutation always

• if a mutation occurs, the tertiary structure is different

• receptor protein therefore cannot accept the HIV and as a result. Infection cannot occur
No marks for writing degenerate, because that won't cause a non functioning protien or what ever it said. I don't think you had to talk about frame shift. Talk about DNA base sequence amino acid sequence tertiary sequence and non longer complementary for full marks
4. (Original post by UK_Britain)
It was 66.7
But how is it possible to have .7 of a heartbeat?
5. (Original post by laney1999)
But how is it possible to have .7 of a heartbeat?

0.9 seconds represents 1 heart beat

heart-rate x min^-1 is the same as heat-rate x 1/60

So 1 heart beat was 0.9x1/60= 0.9/60 =66.7 heart rate
6. (Original post by UK_Britain)

0.9 seconds represents 1 heart beat

heart-rate x min^-1 is the same as heat-rate x 1/60

So 1 heart beat was 0.9x1/60= 0.9/60 =66.7 heart rate
I honestly can't remember.

I remember that the ventricle pumped blood out once per second, which is why I said 60 because I don't see how the .7 is possible. They were both 1 markers anyway right?
7. (Original post by laney1999)
I honestly can't remember.

I remember that the ventricle pumped blood out once per second, which is why I said 60 because I don't see how the .7 is possible. They were both 1 markers anyway right?

It depends on what you got as one beat, I think you got the beat as 1sec^-1 so you put 60, but it was 0.9 not 1
And yh 1 mark. Stroke vol was 120-50=70
8. (Original post by UK_Britain)
It depends on what you got as one beat, I think you got the beat as 1sec^-1 so you put 60, but it was 0.9 not 1
And yh 1 mark. Stroke vol was 120-50=70
9. (Original post by UK_Britain)
No marks for writing degenerate, because that won't cause a non functioning protien or what ever it said. I don't think you had to talk about frame shift. Talk about DNA base sequence amino acid sequence tertiary sequence and non longer complementary for full marks
Would i lose all the marks for saying it changes the variable region, i meant to say it changes the variable group, but they could mean the say thing right? Region/group similar.
10. (Original post by loliamsohappy)
Would i lose all the marks for saying it changes the variable region, i meant to say it changes the variable group, but they could mean the say thing right? Region/group similar.
You won't lose any marks they will have like 5 things you could say for 3 marks. Did you say no longer complementary?
11. (Original post by laney1999)
70% A
60%B
50% C
40%D
30% E
30> U

Roughly
12. (Original post by UK_Britain)
You won't lose any marks they will have like 5 things you could say for 3 marks. Did you say no longer complementary?
I think i said variable region is no longer complementary
13. (Original post by UK_Britain)
70% A
60%B
50% C
40%D
30% E
30> U

Roughly
😱😱😱 that low?!
14. (Original post by UK_Britain)
70% A
60%B
50% C
40%D
30% E
30> U

Roughly
Really that low??

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15. (Original post by UK_Britain)
70% A
60%B
50% C
40%D
30% E
30> U

Roughly
Unlikely I'd say. Not 80 but shouldn't be that low. Maybe 74-75% for an A
16. (Original post by rosemondtan)
Unlikely I'd say. Not 80 but shouldn't be that low. Maybe 74-75% for an A
This is still quite good
17. (Original post by rayofsunshine98)
Really that low??

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We didn't have an ISA, we had to do all the units together, it's a new spec. I 2009 the new spec was as low as 65% for an A
18. (Original post by rosemondtan)
Unlikely I'd say. Not 80 but shouldn't be that low. Maybe 74-75% for an A
Doubt it, we didn't do an ISA, we had to do all the units in one exam, and it's a new spec in 2009 new spec an A was 67%
19. (Original post by UK_Britain)
Doubt it, we didn't do an ISA, we had to do all the units in one exam, and it's a new spec in 2009 new spec an A was 67%
That would be amazing if they were that low, I'm not to sure though... Really seems too low
20. I go to a grammar school and our head of biology said both papers were hard so hopefully the grade boundaries will be low! 🙏🙏🙏

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