Which of the following organs is associated with deamination of proteins?

A. lung

B. stomach

C. kidney

D. liver

E. heart

Ultrafiltration in the kidney takes place in the

A. loop of Henle

B. renal vein

C. Bowman's capsule

D. pelvis

E. pyramid

Which of the following is a structures functions as an excretory system found in flatworm?

A. Contractile vacuole

B. Nephridium

C. Flame cell

D. Malpighiam tubule

E. Kidney

When an axon is at rest, the concentration of ions on either side of the membrane are different. Which of the following is correct about the concentrations of ions on either side of the membrane?

A. There is an excess of potassium ions inside the axon and an excess of sodium ions outside

B. The inside of the axon becomes positively charged while the outside is negatively charged

C. There is an excess of sodium ions on the inner side of the axon

D. Chloride and potassium ions begin to move acrossthe membrane

E. Calcium ions accumulate on the upper side of the axon

The groups of sensory cells found on the upper surface of the tongue are called

A. ampullae

B. taste buds

C. nerve cells

D. somatic cells

E. tactile cells

Which of the following is not a courtship behaviour exhibited by animals

A. Pairing

B. Display

C. Seasonal migration

D. Hibernation

E. Territorialism

Which of the following mineral salts is a trace element?

A. Zinc

B. Carbon

C. Hydrogen

D. Potassium

E. Calcium

Which of the following organisms reduces nitrates in the soil to gaseous nitrogen?

A. Euglena

B. Protozoan

C. Denitrifying bacterium

D. Parasitic mould

E. Nitrifying bacterium

What type of relation exists between a tapeworm and an infected mammal?

A. Symbiosis

B. Commensalism

C. Predation

D. Parasitism

E. Saprophytism

Which of the following best describes a marine habitat?

A. large body of water

B. which has no distinctive color or taste

C. with high concentration of salt

D. with little suspended materials

E. with no water weed