List of top Biology Questions

Spliceosomes are not found in cells of

In the following diagrammatic representation of a standard ECG the ?T? represents.

Identify the elements whose deficiency causes both necrosis and chlorosis.

Receptor sites for neurotransmitters are present on

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?

With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct?

Zygotic meiosis is characteristic of

Select the mismatch :

Which of the following is correctly matched for the product produced by them?

Which of the following represents order of 'Horse'?

Which of the following RNAs should be most abundant in animal cell?

Viroids differ from viruses in having :

Plants which produce characterstic pneumatophores and show vivipary belong to

A temporary endocrine gland in the human body is

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

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 ?

Functional megaspore in an angiosperm develops into ?

Attractants and rewards are required for

Myelin sheath is produced by

Receptor sites for neurotransmitters are present on :

Coconut fruit is a :

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

The water potential of pure water is :

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