The Bowman’s capsule, a part of the kidney is the site of

(a) filtration of blood constituents

(b) reabsorption of water and glucose

(c) formation of ammonia

(d) formation of urea

The source of mammalian hormone ‘relaxin’ is

(a) ovary

(b) stomach

(c) intestine

(d) pancreas

The secondary order of protein structure is 

(a) the sequence of amino acids in the polypeptide chain 

(b) the formation of peptide bonds between amino acids 

(c) the coiling of the polypeptide chain 

(d) the folding of the coiled polypeptide chain

A person was saved from poisonous snake bite by antivenom injection. Which of the following immunity explains this form of protection? 

 (A) Naturally acquired active immunity 

(B) Artificially acquired active immunity 

 (C) Naturally acquired passive immunity 

(D) Artificially acquired passive immunity 

In a cubic close packed structure, fractional contributions of an atom at the corner and at the face in the unit cell are, respectively –

(A)  1/8 and 1/2

(B)  1/2 and 1/4

(C)  1/4 and 1/2

(D)  1/4 and 1/8 

Adventitious roots develop in

(a) creepers

(b) trailers

(c) twinners

(d) All of these

The diagram represents a reaction with and without an enzyme. What is the activation energy of the enzyme catalysed reaction?

(a) A 

(b) B 

(c) C 

(d) D

Which of the following phenomena can be demonstrated by light. But not with sound waves in an air column? 

(A) Reflection 

(B) Diffraction 

(C) Refraction 

(D) Polarization

Ascorbic acid is a/an :

(A) Strong inorganic acid 

(B)Hormone 

(C) Vitamin 

(D) Enzyme

A desert lizard (an ectotherm) and a mouse (an endotherm) are placed inside a chamber at 15ºC and their body temperature [T(L) for the lizard and T(M) for the mouse] and metabolic rates [M(L) for the lizard and M(M) for the mouse] are monitored. Which one of the following is correct –

(A)  T(L) and M(L) will fall while T(M) and M(M) will increase

(B)  T(L) and M(L) will increase while T(M) and M(M) will fall

(C)  T(L) and M(L) will fall, T(M) will remain same and M(M) will increase

(D)  T(L) and M(L) will remain same and T(M) and M(M) will decrease