Select the wrong statement.

1.	Bacterial cell wall is made up of peptidoglycan
2.	Pili and fimbriae are mainly involved in motility of bacterial cells
3.	Cyanobacteria lack flagellated cells
4.	Mycoplasma is a wall-less microorganism

Microtubules are the constituents of

Which of the following are not membrane-bound?

1. Vacuoles

2. Ribosomes

3. Lysosomes

4. Mesosomes

Cellular organelles with membranes are 

The chromosomes in which centromere is situated close to one end are

1. metacentric               

2. acrocentric

3. telocentric                 

4. sub-metacentric

Select the correct matching in the following pairs.

Which one of the following is not an inclusion body found in prokaryotes?

1. Phosphate granule

2. Cyanophycean granule

3. Glycogen granule

4. Polysome

Which structures perform the function of mitochondria in bacteria?

1. Nucleoid

2. Ribosomes

3. Cell wall

4. Mesosomes

The osmotic expansion of a cell kept in water is chiefly regulated by

1. mitochondria

2. vacuoles

3. plastids

4. ribosomes

The motile bacteria are able to move by

1. fimbriae

2. flagella

3. cilia

4. pili