List of top Questions asked in NEET (UG)- 2020

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:

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

Which of the following statements is correct?

Which of the following statements about inclusion bodies is incorrect ?

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

The first phase of translation is:

The size of Pleuropneumonia - like Organism (PPLO) is :

Match the following columns and select the correct option.

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:

Meiotic division of the secondary oocyte is complete

The transverse section of a plant shows following anatomical features: 
(a) Large number of scattered vascular bundles surrounded by bundle sheath. 
(b) Large conspicuous parenchymatous ground tissue. 
(c) Vascular bundles conjoint and closed. 
(d) Phloem parenchyma absent. 
Identify the category of plant and its part

Identify the wrong statement with reference to immunity.

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

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

Which of the following statements is not correct?

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

Montreal protocol was signed in 1987 for control 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

The sequence that controls the copy number of the linked DNA in the vector, is termed :

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

On electrolysis of dil.sulphuric acid using Platinum (Pt) electrode, the product obtained at anode will be:

Match the following

Oxide		Nature
(a)	CO	(ii)	Neutral
(b)	BaO	(i)	Basic
(c)	\(Al_{2}O_{3}\)	(iv)	Amphoteric
(d)	\(Cl_{2}O_{7}\)	(iii)	Acidic

Which of the following is correct option ?

Reaction between benzaldehyde and acetophenone in presence of dilute NaOH is known as:

Sucrose on hydrolysis gives

The calculated spin only magnetic moment of $Cr^{2+}$ ion is :