151. Accumulation of which of the following molecules in the muscles occurs as a result of vigorous exercise ?
A
Glycogen
B
Glucose
C
Pyruvic acid
D
$$L$$ - lactic acid
Answer :
$$L$$ - lactic acid
152. Biotin is an organic compound present in yeast. Its deficiency in diet causes dermatitis and paralysis. It is also known as
A
vitamin $$H$$
B
vitamin $${B_3}$$
C
vitamin $${B_{12}}$$
D
vitamin $$D$$
Answer :
vitamin $$H$$
153. A sequence of how many nucleotides in messenger $$RNA$$ makes a codon for an amino acid?
A
Three
B
Four
C
One
D
Two
Answer :
Three
154. Cellulose upon acetylation with excess acetic anhydride/ $${H_2}S{O_4}$$ (catalytic) gives cellulose triacetate whose structure is
A
B
C
D
Answer :
155. In cellulose, $$D{\text{ - }}$$ glucose units are joined by
A
$$\alpha {\text{ - 1,}}\,{\text{4}}$$ glycosidic linkage
B
$$\beta {\text{ - 1,}}\,{\text{6}}$$ glycosidic linkage
C
$$\beta {\text{ - 1,}}\,{\text{4}}$$ glycosidic linkage
D
peptide linkage
Answer :
$$\beta {\text{ - 1,}}\,{\text{4}}$$ glycosidic linkage
156.
The compound 
is used as
A
antiseptic
B
antibiotic
C
analgesic
D
pesticide.
Answer :
analgesic
157. Which of the following $$B$$ - group vitamins can be stored in our body?
A
Vitamin $${B_1}$$
B
Vitamin $${B_2}$$
C
Vitamin $${B_6}$$
D
Vitamin $${B_{12}}$$
Answer :
Vitamin $${B_{12}}$$
158. Which of the following acids is a vitamin?
A
Aspartic acid
B
Ascorbic acid
C
Adipic acid
D
Saccharic acid
Answer :
Ascorbic acid
159. In $$DNA,$$ the complimentary bases are
A
uracil and adenine, cytosine and guanine
B
adenine and thymine, guanine and cytosine
C
adenine and thymine, guanine and uracil
D
adenine and guanine, thymine and cytosine
Answer :
adenine and thymine, guanine and cytosine
160. Vitamin - $${B_{12}}$$ contains
A
$$Zn\left( {II} \right)$$
B
$$Ca\left( {II} \right)$$
C
$$Fe\left( {II} \right)$$
D
$$Co\left( {III} \right)$$
Answer :
$$Co\left( {III} \right)$$