AQA GCSE Combined Science Biology
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Portage Biochemistry Module 1 Exam QUALIFIED EXAM QUESTIONS WITH ANSWERSDefinition of biochemistry - CORRECT ANSWERchemistry of life; how properties of organisms relate 
to their molecules 
describe archaea phyologeny - CORRECT ANSWERprokaryotes 
live in extreme environments (hot springs, acidic bogs, ocean floors) 
Describe ATP as a biomolecule - CORRECT ANSWERATP is a small biomolecule that is critical for 
energy production of cells 
507 g/mol 
describe bacteria phyologeny - CORRECT ANSWERpro...
AQA GCSE Biology - Paper 1 EXAM QUESTIONS 
WITH CORRECT ANSWERS SOLVED. 
Adaptations of Exchange Surfaces - CORRECT ANSWER1) Large surface area - lots of substances can 
diffuse at once 
2) Lots of blood vessels - to get stuff into and out of the blood quickly 
3) Thin membrane - short distance for substances to diffuse 
4) Often ventilated - air moves in & out 
Aerobic respiration - CORRECT ANSWERRespiration using oxygen 
Goes on constantly in plants and animals 
Most of the reactions happen in...
AQA GCSE Triple Science – Biology TEST 
QUESTIONS WITH CORRECT ANSWERS SOLVED. 
Define community - CORRECT ANSWERThe populations of different species living in a habitat 
Define habitat - CORRECT ANSWERThe place where an organism lives 
Define population - CORRECT ANSWERAll the organisms of one species living in a habitat 
Define the lock and key theory process - CORRECT ANSWERThe substrate enters the active site of 
the enzyme and becomes an enzyme/substrate complex. The products then leave t...
AQA GCSE Combined Science Biology - Paper 1 
UPDATED QUESTIONS WITH CORRECT ANSWERS. 
A cell is 12µm wide. It is magnified by 450 times. How big is the image? - CORRECT 
ANSWER5400µm, or 5.4mm 
A photograph of a cell is 15mm long. It has a magnification of 1100x. What is the actual size? - CORRECT 
ANSWER0.0136mm, or 13.6µm 
Convert 38500µm into mm - CORRECT ANSWER38.5mm 
Define a benign tumour - CORRECT ANSWERA group of cancerous cells that will not spread 
Define a eukaryote - CORRECT ANSW...
AQA GCSE Combined Science Biology Paper 2 QUESTIONS WITH CORRECT SOLVED ANSWERS2 pros & 2 cons of GM crops - CORRECT ANSWER+increased yield=more food 
+already being grown, not problematic 
-worries on human health/safety/allergies 
-long term effects-unplanned problems that could could pass on to future generations 
A person who is heterozygous for brown eyes (Bb) has children with a person who has blue eyes (bb). 
What percentage of their children will have blue eyes? - CORRECT ANSWER50% 
Abio...