Cells - The fundamental unit of life

Question 1

Study of form, structure and composition of cells is called

Answer 1

Cytology

Question 2

Robert Hooke published a book called

Answer 2

MIcrographia

Question 3

The scientist to first observe the free living cells

Answer 3

Leeuwenhoek

Question 4

Purkinje coined the term

Answer 4

protoplasm

Question 5

The scientist who called protoplasm as the physical basis of life

Answer 5

Huxley

Question 6

The Cell theory was proposed by

Answer 6

Schleiden and Schwann

Question 7

Omnis cellula-e-cellula (all cells arise from pre existing cells) was given by

Answer 7

Rudolf Virchow

Question 8

The compound microscope was invented by

Answer 8

Zacharias Janssen

Question 9

Electron microscope was developed by

Answer 9

Knoll and Ruska

Question 10

The shape of erythrocyte (red blood cells)

Answer 10

Discoidal

Question 11

The smallest cell in the living world is

Answer 11

Mycoplasma

Question 12

Passive transport

Answer 12

The movement of ions and other atomic or molecular substances across cell membranes without need of energy input

Question 13

The spontaneous movement of substances or molecules from a region of higher concentration to a region of low concentration

Answer 13

Diffusion

Question 14

Osmosis

Answer 14

The movement of solvent from a region of its higher or lower concentration to a region of lower or higher concentration through a semi-permeable membrane

Question 15

In Hypotonic solution the cell

Answer 15

Gains water by endosmosis

Question 16

In Hypertonic solution the cell

Answer 16

Looses water by exosmosis

Question 17

A plant cell becomes plasmolysed when kept in a

Answer 17

Hypertonic solution

Question 18

A plant cell becomes turgid when kept in a

Answer 18

Hypotonic solution

Question 19

Erythrocytes in Hypotonic solution become

Answer 19

Swollen and Haemolysed

Question 20

Erythrocytes in Hypertonic solution become

Answer 20

Crenated