Chemical Constituents of Living Cells : Biomolecules-Structure and Function of Proteins, Carbodydrates, Lipids, Nucleic Acids; Enzymes-types, Properties, Enzyme Action, Classification and Nomenclature of Anzymes
Chemical Constituents of Living Cells : Biomolecules-Structure and Function of Proteins, Carbodydrates, Lipids, Nucleic Acids; Enzymes-types, Properties, Enzyme Action, Classification and Nomenclature of Anzymes MCQ Questions
13.
An amino acid is called 'zwitterion' because:
B.
It has two carboxyl groups
D.
At a particular pH, it has both positive (-NH3+) and negative (-COO-) charges simultaneously
ANSWER :
D. At a particular pH, it has both positive (-NH3+) and negative (-COO-) charges simultaneously
14.
Ionizable nature of amino acids means:
A.
Their structure changes with pH (different ionic states)
B.
They are always neutral
C.
They cannot conduct electricity
D.
They cannot form bonds
ANSWER :
A. Their structure changes with pH (different ionic states)
15.
Essential amino acids are those that:
A.
Are not used in proteins
C.
Cannot be synthesized by the body and must be obtained from diet
ANSWER :
C. Cannot be synthesized by the body and must be obtained from diet
16.
Proteins are polymers of:
17.
Two amino acids are joined together by which type of bond?
18.
Peptide bond formation involves loss of:
ANSWER :
D. A molecule of water
