The main constituent of hemoglobin is___________?

A. Chlorine
B. Iron
C. Calcium
D. None of these

What is the main component of bones and teeth?

A. Calcium carbonate
B. Calcium phosphate
C. Calcium sulphate
D. Calcium nitrate

A. Medulla oblongata
B. Cerebellum
C. Cerebrum
D. None of these

How many bones are there in an adult human being?

A. 210
B. 260
C. 206
D. 300

Red blood corpuscles are formed in the____________?

A. Liver
B. Bone marrow
C. Kidneys
D. Heart

Total volume of blood in a normal adult human being is

A. 5-6 liters
B. 3-4 liters
C. 8-10 liters
D. 10-12 liters

Which of the following helps in clotting of blood?

A. Vitamin B1
B. Vitamin B2
C. Vitamin D
D. Vitamin K

Vitamin K is a necessary component of the body’s ability to clot blood. Without this function, a simple cut could result in uncontrolled bleeding. In addition, vitamin K has an important role in the formation of bone. Higher levels of vitamin K mean more calcium in the bone, increased bone density, and less risk of fractures

A. 81.1 °C
B. 37.0 °C
C. 98.6 °C
D. 21.7 °C

Cobalt is a material which is ?

A. Strongly attracted by a magnet
B. Not attracted by a magnet
C. not a magnet
D. Weakly attracted by a magnet
E. None of these