List of top Biology Questions

The DNA fragments separated on an agarose gel can be visualised after staining with

Functional megaspore in an angiosperm develops into

If there are 999 bases in an RNA that codes for a protein with 333 amino acids, and the base at position 901 is deleted such that the length of the RNA becomes 998 bases, how many codons will be altered?

A baby boy aged two years is admitted to play school and passes through a dental check - up. The dentist observed that the boy had twenty teeth. Which teeth were absent?

Which cells of "Crypts of Lieberkuhn" secrete antibacterial lysozyme ?

A decrease in blood pressure / volume will not cause the release of :

Attractants and rewards are required for

Adult human RBCs are enucleated. Which of the following statement(s) is/are most appropriate explanation for this feature ? (a) They do not need to reproduce (b) They are somatic cells (c) They do not metabolize (d) All their internal space is available for oxygen

Functional megaspore in an angiosperm develops into ?

Receptor sites for neurotransmitters are present on :

Coconut fruit is a :

Myelin sheath is produced by

The water potential of pure water is :

What is meant by the term fitness according to Darwinism?

75 to 90 mm of mercury is an adult's normal

Which of these techniques is used for 'virtual endoscopy'?

Which of the following acts as a natural sun block?

Weismann cut off tails of mice generation after generation but tails neither disappeared nor shortened showing that

The affinity of an antibody can be determined by measuring

Teichoic acids are typically found in

Mac-Conkey medium is an example of

A microbial disease that spreads over a very large geographic area is called:

The one thing that is common to all fossil fuels is that they

Steam reforming is currently the least expensive method of producing:

Which of the following does not protect body surfaces: