BIO213: Chemistry Of Amino Acids And Proteins TMA4 Complete Question & Answer
Question 1 : Which of these coenzymes mediates one carbon group transfer reactions
A. pyroxidal phosphate
B. Biotin
C. Tetrahydofolate
D. Nicotinamide coenzymes
Answer to Question 1 is C. Tetrahydofolate
Question 2 : Which of these enzymes act on simple sugars
A. pytalin
B. Trypsin
C. Amylopsin
D. lipase
Answer to Question 2 is C. Amylopsin
Question 3 : Which of these enzymes groups catalyse the transfer of hydrogen
A. oxidoreductases
B. transferases
C. isomerase
D. lyases
Answer to Question 3 is A. oxidoreductases
Question 4 : Which of these is the substrate of ptyalin
A. starch
B. glucose
C. Maltose
D. Sucrose
Answer to Question 4 is A. starch
Question 5 : What is the prothetic group in the protein ceruloplasmin
A. Copper
B. DNA
C. Heme
D. Cerumin
Answer to Question 5 is A. copper
Question 6 : One of these structral proteins is found in spider’s web
A. elastin
B. collagen
C. fibroin
D. α-keratin
Answer to Question 6 is C. fibroin
Question 7 : Which of these enzymes catalyse the breakingof bonds without adding water
A. Hydrolases
B. lyases
C. transferases
D. ligases
Answer to Question 7 is B. lyases
Question 8 : One of these terms is the name given to the protein part of an enzyme
A. coenzyme
B. Apoenzyme
C. Holoenzyme
D. coprotein
Answer to Question 8 is B. Apoenzyme
Question 9 : Which of these coenzymes is involved in the mediation of carboxylation reactions
A. Biotin
B. Flavin Coenzymes
C. Coenzyme A
D. Nicotinamide coenzymes
Answer to Question 9 is A. Biotin
Question 10 : Which of these statements is not true of enzyme active site
A. Active sites are made up of clefts which are essential for enzyme activity
B. It is a small portion of the total volume of the enzyme molecule
C. It is three-dimensional.
D. It binds to substrates via very strong forces.
Answer to Question 10 is D. It binds to substrates via very strong forces
Question 11 : One of these is a regulatory protein
A. serum albumin
B. Insulin
C. Casein
D. keratin
Answer to Question 11 is B. Insulin
Question 12 : All but one of these are simple proteins
A. protamine
B. globulins
C. Albumin
D. hemoglobin
Answer to Question 12 is D. hemoglobin
Question 13 : An enzyme with Enzyme Commission Number EC 6.3.2.11 belongs to one of these classes
A. transferases
B. ligases
C. oxidoreductase
D. Hydrolases
Answer to Question 13 is B. ligases
Question 14 : Which of these is the protein component of nucleoprotein
A. Histone
B. globin
C. Nucleus
D. apoferrtin
Answer to Question 14 is A. Histone
Question 15 : One of these is not a defensive protein
A. Immunoglobulins
B. fibrinogen
C. Thrombin
D. thyrotropin
Answer to Question 15 is D. thyrotropin
Question 16 : Which of these statements is not true of enzymes
A. They act on substrates
B. They cannot be denatured
C. They are specific
D. They are biocatalysts
Answer to Question 16 is B. They cannot be denatured
Question 17: All these are fibrous proteins except
A. Keratin
B. Collagen
C. Elastin
D. Albumin
Answer to Question 17 is D. Albumin
Question 18 : What is the end product of the action of alcohol dehydrogenase on alcohol
A. aldehyde
B. acid
C. Ketone
D. Ester
Answer to Question 18 is A. aldehyde
Question 19 : One of these is produced by the action of cellulase on cellulose
A. starch
B. maltose
C. Sucrose
D. glucose
Answer to Question 19 is D. glucose
QUESTION AND ANSWER TO GST203: TMA3 PHILOSHOPHY AND LOGIC
Question 20 : All these are coenzymes except
A. Biotin
B. Thiamine
C. Cobalamin
D. Lipoic acid
Answer to Question 19 is B. Thiamine
9.5/10 mark
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