Human Body-cell

Question 1

Cell discovered by?

Answer 1

Robert hook

Question 2

Living cell discovered by?

Answer 2

Anton van lievan hoek

Question 3

Cell theory is putforwarded by?

Answer 3

Mj shleedan and theodar shwan

Question 4

Who proposed that new cell is develop from the pre existing cell by division?

Answer 4

Rudolf virshaw

Question 5

Outer covering of a animal /human cell which protect and support cell?

Answer 5

Cell membrane/plasma membrane

Question 6

Cell membrane is formed by?

Answer 6

Lipids and proteins

Question 7

The model which explain the structure of plasma membrane?

Answer 7

Fluid mosaic model (proposed by singer and nicolson )

Question 8

Semi fluid substance that fill the inside of a cell?

Answer 8

Cytoplasm

Question 9

Structures within the cell that has one or more specific job to perform

Answer 9

Cell organelles (eg. Endoplasmic reticulam, golgi bodies..)

Question 10

Function of endoplastic reticulam?

Answer 10

Transportation of meterials

—-»>transporatation channel

Question 11

Protein factory of the cell?

Answer 11

Ribosome

——»centre of protein synthesis in the cel
——–»>seen either attached to endoplasmic reticulam or free in the cell

Question 12

Trafic police of the cell?

Answer 12

Golgi bodies

—-»packaging of materials(enzymes, hormone..)

Question 13

Functions of mitochondria?

Answer 13

–>power house of the cell
–>produce and store cellular energy in the form of ATP
–>abundanly seen in brain, liver

Question 14

Lysosome fuctions?

Answer 14

–»suicide bag in the cell
—»destroys foreign substance that enter the cell
—»contains enzymes like lipase, protease etc

Question 15

Vacuoles?

Answer 15

Sac that stores water, salt, excretory materials etc.
—»membranous covering of vacuoles–tonoplast

Question 16

Centrosome functions?

Answer 16

Helps in cell division
—»present only in animal cell
—»composed of centrioles

Question 17

DNA and protein seen in?

Answer 17

Chromatic reticulam

Question 18

What is procaryotes?

Answer 18

Organisms that lack a well defined nucleus

—»eg:bacteria

Question 19

What is Eukaryotes?

Answer 19

Organisms that have a well defined nucleus

—»eg:plants, animals, amoeba

Question 20

2 types of cell devision?

Answer 20

1.mitosis
2.meiosis

Question 21

Mitosis?

Answer 21

–>helps in the growth of multicellular organism
—>2 daughter cells are formed
—->chromosome no. Of daughter cells are remain same as in parent cell

Question 22

Meiosis?

Answer 22

—»ഊനഭംഗം
—»helps in the formation of reproductive cell
—»4 daughter cells are formed
—-»chromosome no. Of daughter cells reduce to half