List of top Biology Questions

Which of the following equations is correctly balanced ?

Which of the following alkaloid is used as Antimalarial drug?

The functional gap present between two neurons is ____ .

How much of energy is stored in one ATP molecule?

Match the following with respect to meiosis: 

a	Zygotene	i	Terminalization
b	Pachytene	ii	Chiasmata
c	Diplotene	iii	Crossing over
d	Diakinesis	iv	Synapsis

Select the correct option from the following:

Name the enzyme that facilitates opening of DNA helix during transcription.

Secondary metabolites such as nicotine, strychnine and caffeine are produced by plants for their :

In light reaction, plastoquinone facilitates the transfer of electrons from:

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

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

Montreal protocol was signed in 1987 for control of:

The enzyme enterokinase helps in conversion of:

Match LIST I with LIST II

Column I		Column II
A	Eosinophils	I	Immune response
B	Basophils	II	Phagocytosis
C	Neutrophils	III	Release histaminase, destructive enzymes
D	Lymphocytes	IV	Release granules containing histamine

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

The QRS complex in a standard ECG represents :

Select the correct events that occur during inspiration.
(a) Contraction of diaphragm 
(b) Contraction of external inter - costal muscles 
(c) Pulmonary volume decreases 
(d) Intra pulmonary pressure increases

Match the following columns and select the correct option.

	Column I		Column II
a	6- 15 pairs of gill slits	i	Trygon
b	Heterocercal  caudal fin	ii	Cyclostomes
c	Air Bladder	iii	Chondrichthyes
d	Poison sting	iv	Osteichthyes

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

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

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

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

Which of the following statements is correct?

Select the correct statement.

The specific palindromic sequence which is recognized by EcoRI is:

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