Biochem lec quiz

Storage polysaccharide made by animals is:

• amylopectin

• glycogen

• cellulose

• collagen

The main site for gluconeogenesis is:

• kidney

• liver

• brain

• muscle

• pancreas

Hemoglobin has quaternary structure and is made up of

• six polypeptide chains, two �-chains and four-chains

• two polypeptide chains, one-chains and one�_-chains

• four polypeptide chains, two �-chains and two�_-chains

• five polypeptide chains, two �-chains and three �_-chains

Protein folding is:

• automatic, mediated by the protein itself

• mediated by other proteins called chaperones

• mediated by the ribosomes

• none of the above

What is the primary structure of a protein?

• The sequence of amino acids form alpha helix's and beta pleated sheets

• The seqquence of amino acids

• 3D arrangement held together by ionic bonds, hydrogen bonds and disulphide bridges.

• More than one polypeptide chain in the protein.

An excess galactose in the blood can be detected through what test?

• Fasting Blood Sugar

• Random Blood Sugar

• Oral Glucose Tolerance Test

• Newborn Screening test

Citric acid accumulation would

• stimulate phosphofructokinase activity

• stimulate fructose 1,6 diphosphatase activity

• inhibit phosphofructokinase activity

• both (b) and (c)

• All of the choices

This peptides block pain produce the feeling of well-being experienced by athletes after strenuous exercise.

• Enkephalins

• Endorphins

• Oxytocin

• Vasopressin

Hydrolysis of lactose yields

• galactose and fructose

• galactose and glucose

• glucose and fructose

• fructose and galactose

Gluconeogenesis requires a higher amount of ATP equivalents as compared to that produced by glycolysis because

• gluconeogenesis releases energy as heat

• Glycolysis releases energy as heat

• glycolysis occurs in the mitochondria while gluconeogenesis occurs in the cytosol

• All of the above

• None of the above