Science and Technology › Biology,Human Physiology

Consider the following minerals :
(1). Calcium
(2). Iron
(3). Sodium
Which of the minerals given above is/are required by human body for the contraction of
muscles?

Which of the following statements is/are correct?
(1). Viruses lack enzymes necessary for the generation of energy.
(2). Viruses can be cultured in any synthetic medium.
(3). Viruses are transmitted from one organism to another by biological vectors only.
Select the correct answer using the codes given below.

Many transplanted seedlings do not grow because