1
MCQ (Single Correct Answer)

NEET 2016 Phase 1

In a protein molecule various amino acids are linked together by
A
peptide bond
B
dative bond
C
$$\alpha $$-glycosidic bond
D
$$\beta $$-glycosidic bond.

Explanation

In a protein molecule various amino acids are linked together by peptide bond.
2
MCQ (Single Correct Answer)

NEET 2016 Phase 1

Which one given below is a non-reducing sugar?
A
Glucose
B
Sucrose
C
Maltose
D
Lactose

Explanation

All monosaccharides whether aldoses or ketoses are reducing sugars. Disaccharides such as sucrose in which the two monosaccharide units are linked through their reducing centres i.e., aldehydic or ketonic groups are non-reducing.
3
MCQ (Single Correct Answer)

NEET 2016 Phase 1

The correct statement regarding RNA and DNA, respectively is
A
The sugar component in RNA is a arabinose and the sugar component in DNA is ribose
B
The sugar component in RNA is 2'-deoxyribose and the sugar component in DNA is arabinose
C
the sugar component in RNA is arabinose and the sugar component in DNA is 2'-deoxyibose
D
the sugar component in RNA is ribose and the sugar component in DNA is 2'-deoxyribose.

Explanation

Sugar in DNA is 2'-deoxyribose whereas sugar in RNA is ribose.
4
MCQ (Single Correct Answer)

NEET 2016 Phase 2

The central dogma of molecular genetics states that the genetic information flows from
A
Amino acids $$ \to $$ Proteins $$ \to $$ DNA
B
DNA $$ \to $$ Carbohydrates $$ \to $$ Proteins
C
DNA $$ \to $$ RNA $$ \to $$ Proteins
D
DNA $$ \to $$ RNA $$ \to $$ Carbohydrates

Explanation

The central dogma of molecular genetics is

DNA $$\buildrel {Transcription} \over \longrightarrow $$ RNA $$\buildrel {Translation} \over \longrightarrow $$ Proteins

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