Biology Mcqs Online Test 4

Which Vitamin is needed for the formation of a light-sensitive pigment in the retina.

About __________ of the body weight of a mammal is water ?

On wound __________ fight foreign particles, like bacteria?

The experiments on DNA molecules in chromosomes for knowing the basis of inherited diseases are conducted by ?

Crop rotation helps in ?

Which character differentiates living things from non-living organisms?

People living in high altitudes (like mountains) usually have a ?

Sythetic insulin from pork was formed by which technique?

The average internal temperature of human body is  ?

The study of fossils is called?