Which one of the following is not a function of the kidney ?

(1) Filtration 
(2) Oxidation 
(3) Absorption 
(4) Secretion

Iodine is necessary for the synthesis of which hormone ?
(1) Auxin (2) Thyroxin (3) Adrenaline (4) Insulin

Which one of the following is not a factor of respiration?

(1) Oxygen 
(2) Carbondioxide 
(3) Water 
(4) Temperature

Break down of pyruvate to give carbon dioxide, water and energy takes place in
(1) Cytoplasm (2) Mitochondria (3) Chloroplast (4) Nucleus

Which of the following gland acts as an endocrine gland as well as exocrine gland?

(1)  Salivary gland
(2)  Pancreas gland
(3)  Pituitary gland
(4)  Parathyroid gland