OCR GCSE Biology A B1-B3 and B7 Higher J247/03 - 14 May 2019 [Exam Discussion]

6 mark on ADH meant more sodium could stay inside as it makes the kidney tubules more permeable so more can be absorbed and less released from body, so more could be kept inside the bloods as levels are low

Original post by WGreen

Yeah I put that too also what was that 6 mark question I had no clue if I'm being honest

Reply 41

zara11413

9

I think it was diffusion because my teacher did say diffusion only occurs with, so not with any other liquid, but idk lol

Original post by Laurence863

osmosis = diffusion of water

it was an iodine solution so im not sure, I assume that because diffusion and osmosis are similar in terms of molecule movement that you'd still get most of the marks but idk lmao

Reply 42

zara11413

9

** only with water sorry

Original post by zara11413

I think it was diffusion because my teacher did say diffusion only occurs with, so not with any other liquid, but idk lol

Reply 43

ellsmastersxxx

6

i thought exactly the same? never seen that style of questions either tbh and not much proper content from revision guides ect

Original post by isabella25

The questions were so weird it was so random

Reply 44

Laurence863

17

Original post by ellsmastersxxx

i put oestorgen and lh. because oestrogen inhibs fsh so surely not oestrogen? and lh releases an egg?

wasnt it for which two hormones are heightened immediately before mentruation?

ik its oestrogen but not sure what else, its probs LH, I put LH then changed to progesterone so rip lmao

Reply 45

Laurence863

17

Original post by ellsmastersxxx

Osmosis, from high to low conc?x

yeah that one

Reply 46

zara11413

9

Yeah I think it was oestrogen and lh hopefully

Reply 47

WGreen

1

I put that becuase lh releases the egg so it would obviously peak on day 14 and fsh matures it before release so I assumed it would be them two as oestrogen and progesterone are both about the uterus lining so I don't think it would have been them

Original post by internet monster

LH and FSH ??

Reply 48

Laurence863

17

Original post by zara11413

I think it was diffusion because my teacher did say diffusion only occurs with, so not with any other liquid, but idk lol

I put diffusion cos it was iodine but im not sure

Reply 49

Laurence863

17

also what did people put for which animals circulatory system is most similar to humans?

I chose bird:
4 chambers/valves in the heart
large surface area in lungs (alveoli)
was a double circulatory system

cant remember why else

Reply 50

math4892

14

Original post by ellsmastersxxx

i put oestorgen and lh. because oestrogen inhibs fsh so surely not oestrogen? and lh releases an egg?

I put LH and FSH, the question specifically asked what two hormones were secreted immediately before ovulation. LH and FSh both peak on day 14? But I was wonderin whether it was oestrogen!? I really don't know

Reply 51

HamyHD1

5

I put amphibian............
OH ****

Original post by Laurence863

also what did people put for which animals circulatory system is most similar to humans?

I chose bird:
4 chambers/valves in the heart
large surface area in lungs (alveoli)
was a double circulatory system

cant remember why else

Reply 52

ellsmastersxxx

6

thats what i wrote now im just thinking WHY lol

Original post by zara11413

Yeah I put oestrogen and lh

Reply 53

mxrytan

2

which person had the type 2 diabetes? a, b or c?

Reply 54

HamyHD1

5

I PUT B!!!!!!

Original post by mxrytan

which person had the type 2 diabetes? a, b or c?

Reply 55

ellsmastersxxx

6

B i put but then i thought insulin was low

Original post by mxrytan

which person had the type 2 diabetes? a, b or c?

Reply 56

pippin110

14

It was amphibian, mum's a doctor and she said the chambers in the bird weren't connected but the chambers in an amphibian were connected so it was like a human's apparently. It was only 4 or 5 marks though.

Original post by Laurence863

also what did people put for which animals circulatory system is most similar to humans?

I chose bird:
4 chambers/valves in the heart
large surface area in lungs (alveoli)
was a double circulatory system

cant remember why else

Reply 57

pippin110

14

It was C because in type 2 diabetes the insulin rises as well it's just that the glucose or something doesn't react to it and that's why you have problems

Original post by mxrytan

which person had the type 2 diabetes? a, b or c?