Biomolecules Test

Question 1
1 / -0

Which one of the following sets of vitamins is fat soluble?

A
$$C, D, B_{6} , B_{12}$$

B
$$A, D, E, K$$

C
$$A, D, B_{1}, B_{2}$$

D
$$D, B_{1}, B_{2}, E$$

Question 2
1 / -0

Ribose is an example of

A
Ketohexose

B
Aldopentose

C
Disaccharide

D
Aldohexose

Question 3
1 / -0

Read the given passage.
In bacteria -galactosidase (gal) is an enzyme which is used for lactose metabolism. The human intestinal bacteria of three different groups were cultured in a medium containing glucose. At time 1, the bacteria were transferred to media containing lactose as a nutrient source instead of glucose. At time 2, the bacteria were returned to the medium containing glucose. Samples of bacteria were removed at five-minute intervals and tested for the presence of gal. The results are presented by graph.
The induction of gal production by intestinal bacteria in this way is useful because

A
Humans do not consume foods containing lactose all the time.

B
It prevents toxic buildup of lactic acid.

C
The production of gal is harmful to bacteria.

D
It prevents the bacteria from using glucose as a nutrient source.

E
Lactose is harmful to bacteria.

Question 4
1 / -0

The reduction in the enzyme activity takes place by
I. Decreasing pH level
II. Increasing temperature
III. Placing enzyme in a non polar liquid

A
I only

B
II only

C
III only

D
I and II

E
I, II, and III

Question 5
1 / -0

The amino acid containing indole part is :

A
Tryptophan

B
Tyrosine

C
Proline

D
Methionine

Question 6

1 / -0

Match the following list and choose the correct combination.

List-A	List-B
(A) Oxidoreductases	(i) Linking of two compounds
(B) Isomerase	(ii) Removal of groups from substrates
(C) Ligases	(iii) Inter conversion of isomers
(D) Lyases	(iv) Dehydrogenation
	(v) Hydrolysis

A- (iv), B- (i), C- (iii), D- (ii)

A- (iv), B- (iii), C- (i), D- (ii)

A- (iii), B- (iv), C- (ii), D- (v)

A- (ii), B- (v), C- (iii), D- (i)

Question 7
1 / -0

Which of the following is aromatic?

A
Lysine

B
Proline

C
Serine

D
Tyrosine

Question 8
1 / -0

Which of the following is a chemical messenger that is produced from one part of the body but affects a different body region?

A
Hormones

B
Minerals

C
Endocrines

D
Both A and C

Question 9
1 / -0

Which of the following statements is/are correct regarding the effects of pH on enzyme catalysed reactions?

A
Direction of the reaction is influenced by $$[H^+]$$.

B
Ionization state of dissociating groups on the enzyme is modified.

C
Ionization state of the substrate is modified.

D
All of the above

Question 10
1 / -0

The statement that is not correct is :

A
carbohydrates are optically active

B
lactose has glycosidic linkage between $${ C }_{ 4 }$$ of glucose and $${ C }_{ 1 }$$ of galactose unit

C
aldose or ketose sugars in alkaline medium do not isomerise

D
penta acetate of glucose does not react with hydroxylamine

Submit Test

Biomolecules Te...

Question 1

$$C, D, B_{6} , B_{12}$$

$$A, D, E, K$$

$$A, D, B_{1}, B_{2}$$

$$D, B_{1}, B_{2}, E$$

Question 2

Ketohexose

Aldopentose

Disaccharide

Aldohexose

Question 3

Humans do not consume foods containing lactose all the time.

It prevents toxic buildup of lactic acid.

The production of gal is harmful to bacteria.

It prevents the bacteria from using glucose as a nutrient source.

Lactose is harmful to bacteria.

Question 4

I only

II only

III only

I and II

I, II, and III

Question 5

Tryptophan

Tyrosine

Proline

Methionine

Question 6

A- (iv), B- (i), C- (iii), D- (ii)

A- (iv), B- (iii), C- (i), D- (ii)

A- (iii), B- (iv), C- (ii), D- (v)

A- (ii), B- (v), C- (iii), D- (i)

Question 7

Lysine

Proline

Serine

Tyrosine

Question 8

Hormones

Minerals

Endocrines

Both A and C

Question 9

Direction of the reaction is influenced by $$[H^+]$$.

Ionization state of dissociating groups on the enzyme is modified.

Ionization state of the substrate is modified.

All of the above

Question 10

carbohydrates are optically active

lactose has glycosidic linkage between $${ C }_{ 4 }$$ of glucose and $${ C }_{ 1 }$$ of galactose unit

aldose or ketose sugars in alkaline medium do not isomerise

penta acetate of glucose does not react with hydroxylamine

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