Microtubules are the constituents of

1.	spindle fibres, centrioles and cilia
2.	centrioles, spindle fibres and chromatin
3.	centrosome, nucleosome and centrioles
4.	cilia, flagella and peroxisomes

A complex of ribosomes attached to a single strand of RNA is known as

1. polymer

2. polypeptide

3. okazaki fragment

4. polysome

A cell organelle containing hydrolytic enzyme is

1. lysosome                         

2. microsome

3. ribosome                         

4. mesosome

Select the mismatch.

Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen?

Select the wrong statement:

Which of the following components provides sticky character to the bacterial cell?

1. Nuclear membrane

2. Plasma membrane

3. Glycocalyx

4. Cell Wall