Identify the following molecule.

Which of the two groups of following formula involved in peptide bond between different amino acids?

The figure shows a hypothetical tetrapeptide portion of a protein with parts labelled A-D. Which one of the following option is correct?

Solution

Glutamic acid and aspartic acid are acidic amino acids with two carboxylic groups and one amino group

Which of the following statements about enzymes is wrong?

Solution

Almost all enzymes are proteins. There are some nucleic acids that behave like enzymes. There are called ribozyme(also called RNA enzyme or catalytic RNA).

Macro molecule chitin is :

Solution

Chitin or fungal cellulose that is nitrogen containing polysaccharide and hetero-polymer of NAG.

Transition state structure of the substrate formed during anenzymatic reaction is:

Solution

Transition state structure formed during an enzymatic reaction is transient and unstable.

The essential chemical components of many coenzymes are :

Solution

The essential chemical components of many enzymesare vitamins, e.g., coenzyme nicotinamide adenine dinucleotide (NAD) and NADP contain vitamin niacin.

A phosphoglycerate is always made up of :

only an unsaturated fatty acid esterified to aglycerolmolecule to which a phosphate group is also attached
a saturated or unsaturated fatty acid esterified to a glyc-erol molecule to which a phosphate group is also at-tached
a saturated or unsaturated fatty acid esterified to a phos-phate group which is also attached to aglycerol mol-ecule.
only asaturated fatty acid esterified to a glycerol mol-ecule to which a phosphate group is also attached

Solution

A saturated or unsaturated fatty acid esterified to aglycerol molecule to which a phosphate group is also attached forms phosphoglycerides.

Phosphoglycerides are major structural components of cell membranes. They are,therefore,also called membrane lipids. Lecithin is one example.

The enzymes required to obtain protoplasts are

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