Lesson 4.7.3.3
4.7.3.3 Amino acids (HT only) Quiz: AQA Chemistry, Unit 7
20 questions
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Lesson 4.7.3.3, Amino acids (HT only): 20 multiple choice questions for the AQA GCSE Chemistry (8462), Unit 7: Organic chemistry, written with Revision Ninja.
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The 20 questions
-
How many different functional groups does an amino acid have?
- Three
- Two
- None
- One
-
Which two functional groups are always present in every amino acid?
- Amine and carboxylic acid
- Halogen and aldehyde
- Ester and amide
- Alkene and alcohol
-
What type of polymerisation reaction do amino acids undergo to form polypeptides?
- Neutralisation
- Addition
- Condensation
- Substitution
-
What polymer is formed from amino acids?
- DNA only
- Poly(ethene)
- Polypeptides
- Polyesters only
-
What is the formula of glycine given in the spec?
- H2NCH2CH2OH
- CH3COOH
- CH3CH2OH
- H2NCH2COOH
-
What term describes how different amino acids combine to form protein chains?
- Identical repeating units
- Random branching
- Cross-linked networks
- Alternative sequences
-
How many different functional groups are found in a single amino acid molecule?
- One
- Two
- Four
- Three
-
What link is formed between amino acids in a polypeptide?
- An ester link
- A peptide link
- An ionic bond
- A double bond
-
Glycine is H2NCH2COOH. How many carbon atoms does it contain?
- 2
- 4
- 3
- 1
-
What small molecule is eliminated when glycine molecules undergo condensation polymerisation?
- Hydrogen
- Water
- Ammonia
- Chlorine
-
Two amino acids join. What small molecule is released?
- Water
- Hydrogen
- Carbon dioxide
- Nitrogen
-
What allows amino acids to form chains with a vast number of different sequences?
- Halogenating the chain
- Combining different monomers
- Using single monomers
- Adding excess water
-
What specific type of link is formed when two glycine molecules react together?
- A covalent bond
- A peptide link
- A hydrogen bond
- An ester link
-
Which naturally occurring polymer is made from amino acids?
- Starch
- Poly(ethene)
- Cellulose
- A protein
-
What type of monomers make up proteins?
- Nucleotides
- Amino acids
- Alcohols
- Alkenes
-
Which functional group on an amino acid reacts with the -NH2 group of another amino acid?
- -CH3
- -OH
- -COOH
- C=C
-
Which group gives an amino acid its basic property?
- Amine group
- Methyl group
- Hydroxyl group
- Carboxylic acid group
-
A polypeptide is formed from three glycine units. How many water molecules are released? (HT)
- 2
- 1
- 3
- 0
-
A chain of 100 amino acid residues is formed. How many peptide links does it contain? (HT)
- 98
- 99
- 101
- 100
-
Which groups react together during the condensation polymerisation of amino acids?
- -H and -Cl
- -OH and -OH
- -COOH and -NH2
- -CH3 and -COOH
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