Multiple Choice QuestionsWhich of the statement about 'Denaturation' given below are correct?
Statements,
A) Denaturation of proteins causes loss of secondary and tertiary structures of the protein.
B) Denaturation leads to the conversion of double strand of DNA into single strand.
C) Denaturation affects primary structure which gets distroyed.
(B) and (C)
(A) and (C)
(A) and (B)
(A) and (B)
Which one of the following species does not exist under normal conditions?
(+)Sucrose
(+)Lactose
(+) Maltose
(+) Maltose
Fructose reduces Tollen's reagent due to
asymmetric carbons
primary alcoholic group
secondary alcoholic group
secondary alcoholic group
D.
secondary alcoholic group
In aqueous solution, fructose is enolized and then converted into aldehyde in basic medium. All aldehydes generally reduces Tollen's reagent thus fructose also reduces Tollen's reagent.
The segment of DNA, which acts as the instrumental manual for the synthesis of the protein is
nucleotide
ribose
gene
gene
In DNA. the complimentary bases are
Adenine and thymine; guanine and cytosine
Adenine and thymine; guanine and uracil
Adenine and guanine, thymine: Guanine and uracil
Uracil and adenine; cytosine and guanine
Which one of the following vitamins is water soluble?
vitamin - B
vitamin - E
vitamin - K
vitamin - K
RNA and DNA are chiral molecules, their chirality is due to:
L -sugar component
chiral bases
chiral phosphate ester units
chiral phosphate ester units
During the process of digestion, the proteins present in food materials are hydrolysed in amino acids. The two enzymes involved in the process
are respectively:
amylase and maltase
diastase and lipase
pepsin and trypsin
pepsin and trypsin
Which one of the following is a peptide hormone?
Glucagon
Testosterone
Thyroxin
Thyroxin
Switch
