2019 AQA GCSE Biology Combined Science Higher - 14th May 2019

Scroll to see replies

Hmmm... if the real size was 43 millimetres like sonno said and the magnification was 50x like I remember then you should divide it by 50 to get real size which is 0.86 then * by 1000 to get micrometres which should be 860 micrometres? I could well be wrong.

Original post by Xbrandon02x

So what was the answer? I got 50🙁

Reply 61

username4660704

yep if you also got it then that is probably the answer

Original post by TheRealMacbeth

860

Reply 62

Hikey1

Yesss i said that, cuz total magnification = eyepiece lens x objective lens, so u had to divide.

Original post by orlyanne

i think it isss that’s what my friends and i put

Reply 63

username4660704

yay

Original post by Hikey1

Yesss i said that, cuz total magnification = eyepiece lens x objective lens, so u had to divide.

Reply 64

sonu2003

What did u guys get for the question where u had to find the value of X in the table using that equation, I forgot the question but remember getting 53

Reply 65

ahb386

I think I got 53.8 or something but you had to round to 2 s.f , so i got 54. but you'll probs still get the mark.

Original post by sonu2003

What did u guys get for the question where u had to find the value of X in the table using that equation, I forgot the question but remember getting 53

Reply 66

username4660704

hmmmmmmmmmmm, I cant really remember that one... but I can visualise the table. What was the topic...?

Original post by sonu2003

What did u guys get for the question where u had to find the value of X in the table using that equation, I forgot the question but remember getting 53

Reply 67

username4660704

oh yeah it was to 2sf

Original post by ahb386

I think I got 53.8 or something but you had to round to 2 s.f , so i got 54. but you'll probs still get the mark.

Reply 68

username4660704

do you remember the question?

Original post by ahb386

I think I got 53.8 or something but you had to round to 2 s.f , so i got 54. but you'll probs still get the mark.

Reply 69

Mzhax

Original post by sillysauage

wtf was that cube stuff and nitrate ions to help plants grow??? amino acids???!!!!

Apparently it was proteins i asked a triple science student their paper was WAYYY easier

Reply 70

sonu2003

Original post by Qwer :)

hmmmmmmmmmmm, I cant really remember that one... but I can visualise the table. What was the topic...?

It was about the heart

Reply 71

kst_xx

Original post by Qwer :)

Ok combined lads, how did it go
@Evil Homer
Answers so far for new people:

Q. What is the drug digitalis made from? (1 mark)
a. Bacteria
b. Foxglove
c. Mould
d. Willow
A. b (Foxglove)

Q. Why do people using beta blockers feel out of breath during exercise? (6 marks)
A. Something about the heart not being able to beat fast enough and not be able to get oxygen around the body is on the right track... [if someone could write a full marks or 5 mark answer for everyone we would appreciate it...]

Q. What is the size of the real image under the microscope? The magnification is x50 and the image is size 43mm under the magnification. Give in micrometres (2 marks?)
A. 43 divided by 50 = 0.86mm (real size image in millimetres), 0.86 times 1000 = 860um (real size in micrometres)

if anyone has any corrections or new answers, comment them and we will add or correct.