List of top Biology Questions

Carriers of Entamoeba histolytica are

Gene for colour blindness is located on

Booklungs are respiratory organs in

Bone marrow is absent in the bones of

Ciliated epithelium is present in

In 2002 AD, According to one research the concentration of CFC reached

Which of the following is not caused by deficiency of minerals ?

The mineral present in cell wall is

Retrovirues have _____ as genetic material.

According to Kyoto protocol the major nations abide to reduce concentration of green house gases by

In genetic code, 61 codons code for 20 different types of amino acids. This is called

Which of the following plants is LDP?

Systema Naturae was written by

Bile secretion is proportional to the concentration of

Bidder's canal is found in

Barr body of a mammal represents

Average $pH$ of human urine is

: The true nucleus is generally absent in E. coli and other prokaryotes : An undifferentiated, unorganized fibrillar nucleus without any limiting membrane is observed in prokaryotic cells

Secreting hypotonic urine is effective in reducing urinary loss of water. Hypotonic urine is more concentrated and higher in osmotic pressure than the blood.

Aldosterone is a steroid hormone and is important in the control of sodium and potassium ion concentration in mammals. It upgrades sodium ion concentration in the ECF by promoting reabsorption of sodium ions from renal tubules and excretion of potassium ions in urine.

Downs syndrome is caused by an extra copy of chromosome number $21$. What percentage of offspring produced by an affected mother and a normal father would be affected by this disorder?

During translation initiation in prokaryotes, a $GTP$ molecule is needed in

An action potential in the nerve fibre is produced when positive and negative charges on the outside and the inside of the axon membrane are reversed, because

Choose the correct sequence of stages of growth curve for bacetria

Patients suffering from cholera are given a saline drip because