Biology MCQs Quiz

It is possible to date the rocks by comparing the amount of specific radioactive isotopes they contain. Which of the statement is correct in this respect?

A. Older sediment layers have equal amount of these radioactive isotopes as that of the young ones B. Older sediment…

8 years ago

__________ is essential for the formation of hemoglobin.

A. Calcium B. Iron C. Water D. Carbohydrates

8 years ago

Immunization by vaccination was first introduced by?

A. Fleming in 1945 B. Florey & Chain in 1975 C. Flore & Chain in 1795 D. Edward Jenner in…

8 years ago

Human blood is an example of__________?

A. Organelle B. Tissues C. Organic compound D. Inorganic compounds

8 years ago

True roots absent in_____________?

A. ferns B. bryophytes C. gymnosperms D. angiosperms

8 years ago

Number of chromosomes in E.coli ?

A. 1 B. 2 C. 4 D. 6

8 years ago

Normally, in the process of osmosis, the net flow of water molecules into or out of the cell depends upon differences in the ?

A. Concentration of water molecules inside and outside the cell B. Concentration of enzymes on either side of the cell…

8 years ago

The first antibiotic to be discovered was_____________?

A. Penicillin B. Cephalosporin C. Amino glycosides D. Erythromycin

8 years ago