PTS Biology Mcqs Online Test 4

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

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

The study of fossils is called?

Which character differentiates living things from non-living organisms?

On wound __________ fight foreign particles, like bacteria?

Sythetic insulin from pork was formed by which technique?

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

The average internal temperature of human body is  ?

Crop rotation helps in ?

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