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AQA Biology A level quiz: Proteins
AQA Biology A level quiz: section 1: biological molecules: Proteins
Quiz by
FizzyMcD
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Last updated: January 3, 2020
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Answer
what is the basic monomer that a proteins are produced from?
Amino acid
How many amino acids occur naturally in proteins?
20
Which group in an amino acids structure gives it the "acid" part of it's name?
carboxyl group
How many oxygens are in an amino acid structure?
2
what bond links amino acids after condensation reactions?
Peptide
The sequence of amino acids in a polypeptide chain forms what structure of a protein?
Primary
The tertiary structure of a protein is maintained by 3 bonds: Hydrogen bonds, Disulfide bridges and _____ bonds
Ionic
The 3D shape of a protein can either coil (alpha) or ______ into a sheet (beta)
Pleat
A haemoglobin is an example of which of the 4 structures of a protein?
Quarternary
What test is used to detect proteins?
Biuret test
What colour wil the solution go if proteins are present?
Purple
Proteins are usually what size?
Large
The main function of proteins in biology is ______ and repair
Growth
What is a globular protein that acts as a catalyst?
Enzyme
Does every living organism have the same amino acids? yes or no?
Yes
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