List of top Biology Questions

Which part of the brain is concern with coughing and sneezing?

In which organ formation of urea takes place?

Which of the following alkaloid is used as Antimalarial drug?

How much of energy is stored in one ATP molecule?

In gel electrophoresis, separated DNA fragments can be visualized with the help of :

Match the following columns and select the correct option.

LIST I Mineral		LIST II  States
A	Placenta	I	Androgens
B	Zona pellucida	II	Human Chorionic Gonadotropin (hCG)
C	Bulbo-urethral	III	Layer of the ovum glands
D	Leydig cells	IV	Lubrication of the Penis

Which of the following hormone levels will cause release of ovum (ovulation) from the graffian топсІе

Match the following columns and select the correct option.

Column I		Column II
A	Clostridium	I	Cyclosporin-A
B	Trichoderma	II	Butyric Acid
C	Monascus	III	Butyric Acid
D	Aspergillus niger	IV	Blood cholesterol lowering agent

Snow-blindness in Antarctic region is due to :

Match the following columns and select the correct option.

Column I		Column II
A	Pituitary gland	I	Grave's disease
B	Thyroid gland	II	Diabetes mellitus
C	Adrenal gland	III	Diabetes insipidus
D	Pancreas	IV	Addison's disease

The body of the ovule is fused within the funicle at :

Montreal protocol was signed in 1987 for control of:

Match the following :

a	Inhibitor of catalytic activity	i	Ricin
b	Possess peptide bonds	ii	Malonate
c	Cell wall material in fungi	iii	Chitin
d	Secondary metabolite	iv	Collagen

The product(s) of reaction catalyzed by nitrogenase in root nodules of leguminous plants is/are :

If the distance between two consecutive base pairs is 0.34nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is $6.6 \times 10^9$ bp, then the length of the DNA is approximately:

Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop.

Match the following columns and select the correct option.

	Column I		Column II
A	Organ of Corti	I	Connects middle ear and pharynx
B	Cochlea	II	Coiled part of the labyrinth
C	Eustachian tube	III	Attached to the oval window
D	Stapes oval window	IV	Located on the basilar membrane

Which is the important site of formation of glycoproteins and glycolipids in eukaryotic cells ?

The QRS complex in a standard ECG represents :

The specific palindromic sequence which is recognized by EcoRI is:

Match the following with respect to meiosis:

	Column I		Column II
A	Bt cotton	I	Gene therapy
B	Adenosine	II	Cellular defence deaminase deficiency
C	RNAi	III	Detection of HIV infection
D	PCR	IV	Bacillus thuringiensis

Which of the following is put into Anaerobic sludge digester for further sewage treatment?

Identify the correct statement with reference to human digestive system.

Which one of the following is the most abundant protein in the animals ?

In relation to Gross primary productivity and Net primary productivity of an ecosystem, which one of the following statements is correct?