IGCSE Biology Revision Units 3-5 Question Preview (ID: 46301)
Unit 3 Movement In And Out Of Cells
Unit 4 Biological Molecules
Unit 5 Enzymes.
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Bond that joins amino acids in a protein molecule.
a) ester
b) hydrogen
c) ionic
d) peptide
Which is NOT a DNA base pair?
a) A-C
b) A-T
c) C-G
d) G-C
Which process relies on water being a solvent?
a) boiling
b) evaporation
c) osmosis
d) transpiration
Which is NOT a complex carbohydrate?
a) cellulose
b) glucose
c) glycogen
d) starch
What is the composition of 1 molecule of fat?
a) 3 molecules of fatty acid, 1 molecule of glycerol
b) 3 molecules of glycerol, 1 molecule of fatty acid
c) 3 molecules of fatty acid, 1 molecule of glycogen
d) 3 molecules of glycogen, 1 molecule of fatty acid
Which is NOT needed for osmosis to occur?
a) carrier protein
b) concentration gradient
c) partially permeable membrane
d) water
Which is NOT a site of active transport?
a) Bowman's capsule
b) Kidney tubules
c) Root hair cell
d) Villi in small intestines
A plant cell placed in distilled water will...
a) be flaccid
b) be plasmolysed
c) be turgid
d) burst
Which two structures have a complementary shape?
a) denatured enzyme and substrate
b) enzyme active site and substrate
c) enzyme active site and enzyme-substrate complex
d) enzyme-substrate complex and substrate
Which enzyme has an optimum pH of 2?
a) amylase
b) lipase
c) pepsin
d) trypsin
Write DIFFUSION in your Asnwer Sheet.
a) diffusion
b) defusion
c)
d)
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