Biology

The condition known as cretinism is caused by the deficiency of?

A. adrenalin B. vitamin A C. insulin D. thyroxin E. vitamin C Correct Answer: Option D - thyroxin

6 years ago

The increase in width of blood vessels in the mammalian skin at high temperatures is known as?

A. vasodilation B. sweating C. vasoconstriction D. shivering E. evaporation Correct Answer: Option A - vasodilation

6 years ago

The cup-shaped part of the Bowman’s capsule contains?

A. nephridium B. glomerulus C. loop of Henle D. nephron E. convoluted tubule Correct Answer: Option B - glomerulus

6 years ago

Which of the following takes place during the process of detoxication in the liver?

A. Poisonous substances in the body are converted into harmless substances B. Fats and oils are broken into finer particles…

6 years ago

The mechanism by which useful materials in the glomerular filtrate are taken back into the blood is known as?

A. filtration B. reabsorption C. haemolysis D. osmosis E. dialysis Correct Answer: Option B -  reabsorption 

6 years ago

Which of the following is not a function of the mammalian skeleton? It

A. gives the body its shape B. provides a framework on which internal organs are suspended C. protects soft and…

6 years ago

Which of the following structures differentiates an animal cell from a plant cell?

A. Ribosomes B. Cell membrane C. Chloroplast D. Mitochondrion E. Lysosome Correct Answer: Option C - Chloroplast

6 years ago

The structure in the cell that controls the movement of substances in and out of the cell is the?

A. cytoplasmic membrane B. nuclear membrane C. cytoplasm D. protoplasm E. endoplasm Correct Answer: Option A - cytoplasmic membrane

6 years ago

Most of the energy in the cell is produced in the?

A. mitochondrion B. lysosome C. plastid D. Golgi apparatus E. cytoplasm Correct Answer: Option A - mitochondrion

6 years ago

Which of the following methods of reproduction is common to Paramecium and Amoeba?

A. Conjugation B. Sexual reproduction C. Binary fission D. Budding E. Fragmentation Correct Answer: Option C - Binary fission

6 years ago