Biochem - 1st Year Exam Questions &
Answers (Grade A+)
All amino acids contain a central carbon, a side chain (R group), an
amino group and a __________ group. -
correct answer ✅Carboxyl
Amino acids can undergo a proton transfer, thus giving both a (+)
and (-) charge. This molecular state is called the ________. -
correct answer ✅Zwitterion
Amino acid that are unable to be synthesised from biochemical
pathways within a cell have to be consumed through dietary intake.
These are called _______ amino acids. -
correct answer ✅Essential
When two amino acids join together, they are joined by an aide
bond. This is also referred to as a _______ bond. -
correct answer ✅Peptide
Which level of protein structure involves the amino acid sequence,
but not the folding of the protein? -
correct answer ✅Primary
,Biochem - 1st Year Exam Questions &
Answers (Grade A+)
Unfolding a protein using heat is a process called ________. This
process does not affect the primary sequence of the protein. -
correct answer ✅Denaturation
If a neutral amino acid is placed in a very basic environment (pH >
10), it will lose a proton (H+) from the __________ functional
group. -
correct answer ✅Carboxyl - COOH
Disulphides bonds are covalent bonds between two _______ amino
acids. -
correct answer ✅Cysteine
The process of breaking the bonds between amino acids within a
polypeptide is called a ______ reaction. -
correct answer ✅Hydrolysis
All amino acids contain both an acidic carboxyl group and a basic
______ group. -
correct answer ✅Amino
,Biochem - 1st Year Exam Questions &
Answers (Grade A+)
Amino acids never exist in nature as neutral molecules; rather they
undergo a proton transfer to form a ______. -
correct answer ✅Zwitterion
Humans are unable to produce _____ of the amino acids required,
and therefore they are referred to as essential amino acids. -
correct answer ✅10
If an amino acid is placed in a very acidic environment (pH < 2)
which functional group gains a proton (H)? -
correct answer ✅Carboxyl group
The amino acid at the "ends" of the peptide can be either a N-
terminal amino acid or a ________ amino acid. -
correct answer ✅C-terminal
Which level of protein structure describes the 3D arrangement of
localised regions? -
correct answer ✅Secondary structure
, Biochem - 1st Year Exam Questions &
Answers (Grade A+)
Each turn in an alpha helix contains ____ (number) amino acid
residues. -
correct answer ✅3.6
Some enzymes, such as pepsin, break down polypeptides by
______. -
correct answer ✅Hydrolysis
Various processes, including heating, can achieve disruption of
secondary, tertiary, and even quaternary protein structure. This
type of change in a proteins shape is termed ______ . -
correct answer ✅Denaturation
There are _____ amino acids that humans must obtain from diet
and can't produce. -
correct answer ✅10
All amino acids contain the acidic _____ group and a basic amino
group -
correct answer ✅Carboxyl
Answers (Grade A+)
All amino acids contain a central carbon, a side chain (R group), an
amino group and a __________ group. -
correct answer ✅Carboxyl
Amino acids can undergo a proton transfer, thus giving both a (+)
and (-) charge. This molecular state is called the ________. -
correct answer ✅Zwitterion
Amino acid that are unable to be synthesised from biochemical
pathways within a cell have to be consumed through dietary intake.
These are called _______ amino acids. -
correct answer ✅Essential
When two amino acids join together, they are joined by an aide
bond. This is also referred to as a _______ bond. -
correct answer ✅Peptide
Which level of protein structure involves the amino acid sequence,
but not the folding of the protein? -
correct answer ✅Primary
,Biochem - 1st Year Exam Questions &
Answers (Grade A+)
Unfolding a protein using heat is a process called ________. This
process does not affect the primary sequence of the protein. -
correct answer ✅Denaturation
If a neutral amino acid is placed in a very basic environment (pH >
10), it will lose a proton (H+) from the __________ functional
group. -
correct answer ✅Carboxyl - COOH
Disulphides bonds are covalent bonds between two _______ amino
acids. -
correct answer ✅Cysteine
The process of breaking the bonds between amino acids within a
polypeptide is called a ______ reaction. -
correct answer ✅Hydrolysis
All amino acids contain both an acidic carboxyl group and a basic
______ group. -
correct answer ✅Amino
,Biochem - 1st Year Exam Questions &
Answers (Grade A+)
Amino acids never exist in nature as neutral molecules; rather they
undergo a proton transfer to form a ______. -
correct answer ✅Zwitterion
Humans are unable to produce _____ of the amino acids required,
and therefore they are referred to as essential amino acids. -
correct answer ✅10
If an amino acid is placed in a very acidic environment (pH < 2)
which functional group gains a proton (H)? -
correct answer ✅Carboxyl group
The amino acid at the "ends" of the peptide can be either a N-
terminal amino acid or a ________ amino acid. -
correct answer ✅C-terminal
Which level of protein structure describes the 3D arrangement of
localised regions? -
correct answer ✅Secondary structure
, Biochem - 1st Year Exam Questions &
Answers (Grade A+)
Each turn in an alpha helix contains ____ (number) amino acid
residues. -
correct answer ✅3.6
Some enzymes, such as pepsin, break down polypeptides by
______. -
correct answer ✅Hydrolysis
Various processes, including heating, can achieve disruption of
secondary, tertiary, and even quaternary protein structure. This
type of change in a proteins shape is termed ______ . -
correct answer ✅Denaturation
There are _____ amino acids that humans must obtain from diet
and can't produce. -
correct answer ✅10
All amino acids contain the acidic _____ group and a basic amino
group -
correct answer ✅Carboxyl
