The central dogma of molecular genetics states that the genetic information flows from

Structures of alanine at $pH = 2$ and $pH = 10$ are respectively

The correct statements are:
$A$. Activation energy for enzyme catalysed hydrolysis of sucrose is lower than that of acid catalysed hydrolysis.
$B$. During denaturation, secondary and tertiary structures of a protein are destroyed but primary structure remains intact.
$C$. Nucleotides are joined together by phosphodiester linkage between $C_{3}$ and $C_{5}$ carbons of the pentose sugar.
$D$. Quaternary structure of proteins represents the spatial arrangement of two or more polypeptide chains.
Choose the correct answer from the options given below:

The $\alpha-$helix and $\beta-$pleated sheet structures of protein are associated with its:

Accumulation of which of the following molecules in the muscles occurs as a result of vigorous exercise?

Amino acids are the building blocks of