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NEET Biology Solved Question Paper 2013

Multiple Choice Questions

11.

Transition state structure of the substrate formed during an enzymatic reaction is

transient but stable
permanent but unstable
transient and unstable
permanent and stable

12.

A phosphoglyceride is always made up of

only a saturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached
only an unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached
a saturated or unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached
a saturated or unsaturated fatty acid esterified to a phosphate group, which is also attached to a glycerol molecule

13.

Pigment-containing memberanous extensions in some cyanobacteria are

heterocysts
basal bodies
pneumatophores
chromatophores

14.

A major site for synthesis of lipids is

RER
SER
symplast
nucleoplasm

15.
The complex formed by a pair of synapsed homologous chromosomes is called

equatorial plate

kinetochore

bivalent

axoneme

bivalent

Synapsis is the pairing of homologous chromosomes. Each pair is called bivalent. Chromosomes line up around the equator of the spindle, attached by their centromeres to the spindle fibres, which are microtubules. The microtubules forming spindles can be of two types, i.e., kinetochore microtubule and non-kinetochore microtubule.

Axoneme is the central core of a cilium or flagellum consisting of a central pair of filaments surrounded by nine other pairs.

Equatorial plate is the plane located midway between the poles of a dividing cell during the metaphase stage of mitosis or meiosis. It is formed from the migration of the chromosome to the centre of the spindle.