(i) Lipids
(ii) It is a common sterol and also the parent compound for steroid hormones.
(iii) Cholesterol exists in two forms, i.e., low density cholesterol which is harmful and high density cholesterol, which is essential for various physiological processes.

Line B, will show the rate of reaction at \(60°C\) because the rate of reaction initially is more rapid, but then decreases as the enzyme becomes denatured by the high temperature.Thus, the quantity of product remains constant at a lower amount compared to line N.

Enzymes, generally function in a narrow range of pH.Each enzyme shows its highest activity at a particular optimum pH.Activity declines both below and above the optimum value. The graph shows maximum enzyme activity at optimum pH.The rate of enzyme activity decreases above and below that optimum pH.

The most important fact of biology systems is that all living organisms exist in a steady-state characterised by the concentration of each of the biomolecule. These biomolecules are in a metabolic flux. Any chemical or physical process moves spontaneously to equilibrium. Thus, the steady state is a non-equilibrium state.
As living organisms work continuously, they cannot afford to reach equilibrium. Hence, the living state is a non-equilibrium steady-state to be able to perform work. This is achieved by energy input. Metabolism provides a mechanism for the production of energy.
Hence, the living state and metabolism are synonymous. Without metabolism, there cannot be a living state.

The sequence of amino acids, i.e., the positional configuration in a protein which is the first amino acid, which is second and so on is called the primary structure of a protein.
The first amino acid is also called as N-terminal amino acid. The last amino acid is called the C-terminal amino acid. Yes, we can connect this information to purity or homogeneity of a protein. Based on number of amino and carboxyl groups, these can be acidic (e.g., glutamic acid), basic (lysine) and neutral (valine) amino acids.