Answer: Option A. -> Watson and Crick
:
A
Watson and crick proposed the double helical structure of DNA.

Answer: Option A. -> Watson and Crick
:
B

It is clear from the above structure that the linkage is between

Answer: Option A. -> Amino acid
:
A
Option (a)
Amino acids linked through peptide bonds are called polypeptides.

Answer: Option A. -> Scurvy
:
A
Option (a)
The deficiency of vitamin-Ccauses “scurvy”

Answer: Option A. -> If both assertion and reason are true and the reason is the correct explanation of the assertion.
:
A
Option (a)
Sucrose is a non reducing-sugar as it does not reduceTollen's or Fehling's reagent, due to absence of freealdehyde or ketone groups. It contains stableacetal orketal structure which cannot be opened into a free carboxyl group.
Sucrose is composed of alpha-D-glucopyranose unit and -D-fructofuranose unit. These units are joined bya-b-glycosidic linkage betweenC-1 of the glucose unit andC- 2 of the fructose unit.

Answer: Option A. -> ATP
:
A
Option (a)
The human body stores long term energy in lipids- these are fats, and oils. Lipids contain bonds that can be broken to release lots of energy. Short term energy is stored in carbohydrates, like sugars. An example of this is glucose. However, glucose is a large molecule and it is not the most efficient way for the body to quickly make energy. The cell’s most common form of energy is Adenosine Triphosphate (ATP).

Answer: Option D. -> An aldehydic group
:
D
Glucose(-CHO) +Tollen's reagent →Gluconic acid +Ag (Silver mirror)

Answer: Option A. -> Guanine
:
A
Option (a)
Adenine and guanine arepurines.Purines are the larger of the two types of bases found in DNA.
The other 3 are pyrimidine bases. These are the smaller of the two.

Answer: Option A. -> Ascorbic acid
:
A
Option (a)

Ascorbic acid (vitamin c)

Answer: Option D. -> Palmitic acid
:
D
Option (d)
Oleic acid $-C_{17}{H}_{33}COOH$, linoleic acid$-C_{17}{H}_{31}COOH$, linolenic acid $-C_{17}{H}_{29}COOH$,palmitic acid $-C_{15}{H}_{31}COOH$. Saturated monocarboxylic acids form a homologous series which has a general formula $-C_n{H}_{2n+1}COOH$ or $-C_n{H}_{2n}COOH$. Only palmitic acid follows this.