Btec applied science biology unit learning
aim a Unit : investigative project Learning
Aim A: undertake a literature search and
review to produce an investigative project
proposal.
What is an enzyme? - CORRECT ANSWER>>A protein molecule that
acts as a catalyst in a biochemical reaction.
What are proteins made of? - CORRECT ANSWER>>amino acids
What are the four chemical groups attached to a central carbon in an
amino acid molecule? - CORRECT ANSWER>>1. a hydrogen atom
2. an amino group
3. a carboxyl group
4. a variable group
How many different types of R groups are there? - CORRECT
ANSWER>>20
What are amino acids held together by? - CORRECT
ANSWER>>peptide bonds
What reactions occur between two amino acids? - CORRECT
ANSWER>>a condensation reaction
What type of bond is formed after a condensation reaction? -
CORRECT ANSWER>>Dipeptide
What is removed during a condensation reaction? - CORRECT
ANSWER>>Water (H₂O)
What is the active site of an enzyme? - CORRECT ANSWER>>The
part of the enzyme where the biochemical reaction takes place.
, What are the types of protein structures? - CORRECT ANSWER>>1.
Primary structure
2. Secondary structure
3. Tertiary structure
4. Quaternary structure
What is primary structure of a protein? - CORRECT ANSWER>>A
sequence of amino acids in a polypeptide chain
What is secondary structure of a protein? - CORRECT
ANSWER>>Refers to local folded structures that form a polypeptide
due to interactions between atoms of a backbone
What is tertiary structure of a protein? - CORRECT ANSWER>>Is due
to interactions between the R groups of amino acids that make up the
protein
What factors affect enzyme activity? - CORRECT ANSWER>>1.
Temperature
2. Concentration of substrate
3. PH
4. Concentration of an enzyme
Describe how temperature affects enzyme activity - CORRECT
ANSWER>>Rate of reaction continues to increase until it's optimum
temperature, the reaction stops when temperature gets too high.
Describe how concentration of substrate affects enzyme activity -
CORRECT ANSWER>>1. As concentration increases rate of reactions
increase
2. Plateaus because all active sites are occupied
Describe how pH affects enzyme activity - CORRECT
ANSWER>>Optimum pH is when rate of enzyme controlled reaction is
at its fastest. Above optimum H+ and OH- ions break the bonds which
hold tertiary structure.
aim a Unit : investigative project Learning
Aim A: undertake a literature search and
review to produce an investigative project
proposal.
What is an enzyme? - CORRECT ANSWER>>A protein molecule that
acts as a catalyst in a biochemical reaction.
What are proteins made of? - CORRECT ANSWER>>amino acids
What are the four chemical groups attached to a central carbon in an
amino acid molecule? - CORRECT ANSWER>>1. a hydrogen atom
2. an amino group
3. a carboxyl group
4. a variable group
How many different types of R groups are there? - CORRECT
ANSWER>>20
What are amino acids held together by? - CORRECT
ANSWER>>peptide bonds
What reactions occur between two amino acids? - CORRECT
ANSWER>>a condensation reaction
What type of bond is formed after a condensation reaction? -
CORRECT ANSWER>>Dipeptide
What is removed during a condensation reaction? - CORRECT
ANSWER>>Water (H₂O)
What is the active site of an enzyme? - CORRECT ANSWER>>The
part of the enzyme where the biochemical reaction takes place.
, What are the types of protein structures? - CORRECT ANSWER>>1.
Primary structure
2. Secondary structure
3. Tertiary structure
4. Quaternary structure
What is primary structure of a protein? - CORRECT ANSWER>>A
sequence of amino acids in a polypeptide chain
What is secondary structure of a protein? - CORRECT
ANSWER>>Refers to local folded structures that form a polypeptide
due to interactions between atoms of a backbone
What is tertiary structure of a protein? - CORRECT ANSWER>>Is due
to interactions between the R groups of amino acids that make up the
protein
What factors affect enzyme activity? - CORRECT ANSWER>>1.
Temperature
2. Concentration of substrate
3. PH
4. Concentration of an enzyme
Describe how temperature affects enzyme activity - CORRECT
ANSWER>>Rate of reaction continues to increase until it's optimum
temperature, the reaction stops when temperature gets too high.
Describe how concentration of substrate affects enzyme activity -
CORRECT ANSWER>>1. As concentration increases rate of reactions
increase
2. Plateaus because all active sites are occupied
Describe how pH affects enzyme activity - CORRECT
ANSWER>>Optimum pH is when rate of enzyme controlled reaction is
at its fastest. Above optimum H+ and OH- ions break the bonds which
hold tertiary structure.
