Note: The quiz has five questions. Each has two option one true and other false.

Q.1  bacteria come under the prokaryotes because :

a) it has no definite membrane-bound nucleus

b) it has well defined membrane-bound nucleus

Ans. (a)A prokaryote is a unicellular organisms that lacks a membrane bound nucleus ,mitochondria or any other membrane bound oraganelles. Bacteria are classified as prokaryote because they lack a membrane bound nucleus.
Q.2 plant cell mainly composed of ?

a) cellulose 

b) lipids 

Ans. (a)Plant have cell wall constructed outside   the cell membrane and composed of cellulose cellulose is an organic compound a polysaccharide consisting of  a linear chain of several hundred to many thousands of beta-linked glucose unit
Q.3 the cell theory is not applicable to 

a) virus

b) bacteria

Ans.(a)Cell theory states that cells are the basic structure of every living thing.viruses don’t exist as cells and are not made up of cells. A virus is nothing more than a protein coat surrounding a piece of D.N.A or R.N.A

Q.4 site of aerobic respiration in Eukaryotic cells is

a) mitochondria

b) plastid

Ans.(a)
Respiration takes place in the presence of oxygen called aerobic respiration. Mitochondria are organelles whose membrane are specialized for aerobic respiration. The matrix of mitochondria is the site of Krebs cycle reaction.

Q.5 which one is the non membranous organelle from the following

a) ribosome

b) nucleus

Ans.(a)Ribosome is a complex molecule made of ribosomal R.N.A molecule and protein that form a factory for protein synthesis in cells.