Science and Technology › Biology,Human Physiology

Consider the following statements :
I. No virus can survive in/ocean waters.
II. No virus can infect bacteria.
III. No virus can change the cellular transcriptional activity in host cells.
Which of the statements given above are correct?

With reference to monoclonal antibodies, consider the following:
I. They are man-made proteins.
II. They stimulate the patient’s immune system to fight the specific disease.
III. They are produced using animal cells only.
Which of the statements given above are correct?

Which one of the following is synthesised in human body that dilates blood vessels and increases blood flow?

Consider the following statements in respect of probiotics :
1. Probiotics are made of both bacteria and yeast.
2. The organisms in probiotics are found in foods we ingest but they do not naturally occur in our gut.
3. Probiotics help in the digestion of milk sugars.
Which of the statements given above is/are correct?

Which of the following statements are correct regarding the general difference between
plant and animal cells?
(1) Plant cells have cellulose cell walls whilst animal cells do not.
(2) Plant cells do not have plasma membrane unlike animal cells which do.
(3) Mature plant cell has one large vacuole vacuoles.
Select the correct answer using the code given below:

Which of the following statements is/are correct? Viruses can infect
1. Bacteria
2. Fungi
3. Plants
Select the correct answer using the code given below.

Consider the following techniques/phenomena:
1. Budding and grafting in fruit plants
2. Cytoplasmic male sterility
3. Gene silencing
Which of the above is/are used to create transgenic crops?

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