AQA GCSE Biology Unit 3

cover pretty much everything you need for B3, hope it helps... Good Luck!

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  • Created by: A-Gracie
  • Created on: 17-05-11 17:03
what is the name given to the method of transporting particles against a concentration gradient?
active transport
1 of 20
how is the surface area of the lungs increased?
alveoli
2 of 20
what is the purpose of veins?
they return 'used' blood back to the heart
3 of 20
how thick is a capillary wall?
one cell thick
4 of 20
what is the job of red blood cells?
to carry oxygen around the body
5 of 20
what does haemoglobin combine with in the lungs?
oxygen to become oxyhaemoglobin
6 of 20
what does an increase in muscle activity require?
both
7 of 20
what is glucose stored as?
glycogen
8 of 20
what is the correct reaction for anaerobic respiration?
glucose --> lactic acid + water (+ energy)
9 of 20
true or false: nephrons are the filtration units in the kidneys?
True
10 of 20
what happens to sugars, a sufficient amount of ions, and a sufficient amount of water as the liquid flows along the nephron?
they are reabsorbed back into the blood
11 of 20
what do kidneys remove from the blood?
waste products
12 of 20
when a membrane is partially permeable, what can it do?
let substances through which can fit through the small holes
13 of 20
when would someone need to use a dialysis machine?
after they have had a kidney failure
14 of 20
true or false: the only cure for kidney disease at the moment in to have a kidney transplant?
True
15 of 20
what 2 foods can be made through bacteria?
cheese + yoghurt
16 of 20
what is the correct equation for the anaerobic respiration of glucose by yeast?
glucose --> ethanol + carbon dioxide + energy
17 of 20
what is mycoprotein used for?
making meat substitutes
18 of 20
who discovered penicillin?
alexander flemming
19 of 20
what is the normal % of methane and carbon dioxide in biogas?
70% methane 30% CO2
20 of 20

Other cards in this set

Card 2

Front

how is the surface area of the lungs increased?

Back

alveoli

Card 3

Front

what is the purpose of veins?

Back

Preview of the front of card 3

Card 4

Front

how thick is a capillary wall?

Back

Preview of the front of card 4

Card 5

Front

what is the job of red blood cells?

Back

Preview of the front of card 5
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