BIO213: Chemistry Of Amino Acids And Proteins TMA4 Complete Question & Answer

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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

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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

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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

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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

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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

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Question 20 : All these are coenzymes except
A.  Biotin
B.  Thiamine
C.  Cobalamin
D.  Lipoic acid

Answer to Question 19 is B.  Thiamine

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