(Original post by michelfish)
1 evidence that he ran 6 times?
6 peaks in the graph
2 how long did he rest after last sprint?
3 during exercise heart rate increases why?
more oxygen for aerobic respiration for energy for muscles also removes carbon dioxide and lactic acid
4 why are the jars filled with nitrogen and air tight?
the lid prevents micro-ogransisms contaminating the culture and the nitrogen ensures the conditions in each jar are the same
5 main gas in biogas appart from methane?
6 percentage of methane for 2.5% fish fat?
adding fish fat increases the proportion of methane
8 why would the farmer not put fish fat in his biogas generator? (he lives 112 km away from sea)
he lives far away from the sea (fish)
9 what is fusarium doing?
10 why is important to keep mixture moving?
to mix Fusarium with the oxygen and prevent it from sedimenting
11 why not use paddles?
the branches of the fusarium would get damaged by the paddles
12 why chicken better for body builders?
chicken has more protein
13 why mycoprotein better for health?
less fat and less cholesterol
14 why not diffusion?
diffusion can't happen against a concentration gradient so the concentration inside the plant would be the same as outside
15 what was uaed instead?
16 how do lots of roots help absorb ions?
larger surface area
17 why lots of mitachondria?
to produce energy for active transport
18 why lots of starch?
starch is converted to glucose for energy
19 what is in healthy urine exept water?
Urea & (exess) mineral ions
20 what happens to glucose in kidney?
the glucose is filtered out of the blood then it is reabsorbed by active transport
21 why glucose in diabetic urine?
there is too much glucose to be reabsorbed (not enough energy avialable for the active tranpsort required)
with maltose increasing DAS concentration decreases the percentage sugar used by yeast. glucose and sucrose not affected
23 why maltose not absorbed by yeast?
maltose too big to be absorbed by yeast
24 why maltose absorbed when DAS not added?
the enzymes digests maltose into two molecules of glucose which can be absorbed and DAS stops production of this enzyme so maltose cannot be broken down
25 effect of DAS on alcahol production?
DAS reduces the percentage of alcohol produced
26 why beer company not use DAS?
DAS decreases the amount of alcahol produced & the toxins can make consumers ill
this is what i put i hate boilogy but it's so easy
i recon 35 = A* but there is no reason why it couldn't be 38/39 i don't trust boilogy people to be consistent with mark schemes or to say that there will be no questions on biogenesis lol