The two subunits of ribosomes remain united at critical ion level of _______.

(a)

Magnesium

(b)

Calcium

(c)

Sodium

(d)

Ferrous

Keeping in view the fluid mosaic model for the structure of cell membrane which one of the following statements is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other.

(a)

Neither lipid nor proteins can flip-flop

(b)

Both lipid and proteins can flip flop

(c)

While lipids can rarely flip-flop proteins cannot

(d)

While proteins can flip-flop lipids cannot

_________ provides 3 dimensional images of surface of microscopic objects.

(a)

TEM

(b)

SEM

(c)

Phase Contrast microscope

(d)

Dark field microscope

The term protoplasm was coined by______.

(a)

A Purkinje

(b)

Mohl

(c)

Schultze

(d)

Felix

Janus Green is used to stain____

(a)

Starch

(b)

Nucleus

(c)

Mitochondria

(d)

Chromosome

Bring out the significance of Transmission Electron Microscope.

State the protoplasm theory.

Name the two kinds of electron microscope.

Define 'magnification' of a Microscope.

What are nucleolar organisers?

Distinguish between prokaryotes and eukaryotes.

Differentiate the 70s Ribosomes and 80s Ribosomes.

How are Chromosomes classified based on the position of centromere?

Differentiate between Chromoplasts and Leucoplasts.

What are the functions of Chloroplast?

Difference between plant cell and animal cell.

Draw the ultra structure of plant cell.

Discuss in detail about the physical properties of protoplasm.

Describe the Fine Structure of a cell wall.