BIOLOGY CLASSES BY A.K.SINHA

 

BIOLOGY CLASSES by A.K.SINHA

1.who introduced the term’CELL’ ?

Ans-Robert hook

2.what is Leeuwenhoek’s contribution to biology ?

Ans.simple microscope ,description of bacteria,human sperm,and RBC.

3.who gave the statement’OMNIS CELLULA E CELLULA ?

Ans.Rudolf Virchow

4.who discovered the nucleus?

Ans.Robert Brown.

5.Name the scientist who are credited with cell theory ?

Ans.Schleiden and Schwan

6.Mention the largest animal cell .

Ans.Acetabuleria

7.Mention the longest animal cell.

Ans.neuron

8.what is the control center of the cell?

Ans.Nucleus

9.where is a neucleolus found?

Ans.in the nucleus

10.who gave the term ‘cytology’?

Ans.Hertwig

11.name the smallest cell in the biological world.

Ans.PPLO/mycoplasma

12.name the largest cell in the biological world .

Ans.Ostrich egg(170x130)

13.Name the prokaryotic cell without cell wall.

Ans.mycoplasma

14.Name the major component of plant cell wall.

Ans.cellulose

15.Name the author of the book’MICROGRAPHIA’.

Ans.Robert hook

16.Cell theory was proposed in?

Ans.1838-39

17.who gave the term ‘protoplasma’?

Ans.Johannes purkinje

18.who gave the extension of cell theory?

Ans.Rudolf Virchow.