Question

2 In which property of protein, amino acid sides chains?

a) size

b) peptide bonding

c) function

d) donding

2 Wich of this statements its true about protein structure ?

a)Tertiary structure increases protein function, and quaternary structure decreases protein function.

b)Tertiary structure involves three basic forms of protein folding, and quaternary structure involves 4 basic forms of protein folding.

c) Tertiary structure involves all types of bonds (covalent, ionic, hydrogen, and hydrophobic interactions), and quaternary structure involves just hydrogen bonds.

d) Tertiary structure involves the folding of a single polypeptide, and quaternary structure involves the interaction of multiple polypeptides.

3) What process occur when a Ca+ ionbind to protein and this change the protein's dimensional shape?

A) enzyme activation

B) allosteric modulation

C) signal transduction

D) covalent modulation

4 Which molecule release more free energy when its oxidized?

a) fatty acid

b) polypeptide

c)benzonic acid

d)starch molecule

Answer 1

Q1) The correct option is bonding.

The side chains of different aminoacids in a protein molecule can form different types of bonds like ionic bonds, disulphide bonds and hydrogen bonds etc to stabilize the protein structure and help the protein to fold into a specific three dimensional structure (Secondary or tertiary).

Q2) The option D is correct

The primary transcript of protein involves different types of interactions (electrostatic, covalent, hydrophobic, vanderwaals and hydrogen bonds) to get folded into tertiary structures. A tertiary structure is a highly folded conformation of a single polypeptide. when a protein is having more than one polypeptide, each having a specific tertiary structure, the protein is said to have quartenary structure.

Q3) The correct option is C.

The binding of Ca ions to many proteins has been found to regulate many biochemical processes by initiating signal transduction and these proteins act as second messengers for bringing a specific cellular response. a specific example is calcium calmodulin protein which initiates many cellular responses downstream when bound to calcium.

Q4) Not sure

but could be starch