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?

(1) Bacillus

(2) Pseudomonas

(3) Mycoplasma

(4) Nostoc

Which of the following is incorrect match

(1)bacillus- rod like

(2)coccus-comma shaped

(3)vibrio-comma shaped

(4)spirillum-spiral

Cell envelope in bacteria consists of 

1.  Plasma membrane only 

2. Plasma membrane and mesosome 

3. Glycocalyx only 

4. Glycocalyx, cell wall and plasma membrane

Which of the following structure is not found in a prokaryotic cell?

(1) Nuclear envelope

(2) Ribosome

(3) Mesosome

(4) Plasma membrane

Pigment-containing membranous extensions in some cyanobacteria are

(1) heterocysts

(2) basal bodies

(3) pneumatophores

(4) chromatophores

In 70S, S is

(1)sedimentation coefficient

(2)indirect measure of density and size

(3)indirect measure of mass and size

(4)Both A and B

Prokaryotic cells have something unique in the form of:

1. Inclusion bodies

2. Plasmids

3. Cell wall

4. 70 S ribosomes

In prokaryotes, ribosomal RNAs

1.  As well as proteins are synthesized in cytoplasm

2.  Are synthesized in the nucleolus while proteins in cytoplasm

3.  Are synthesized in the cytoplasm while proteins in the nucleolus

4.  As well as proteins are synthesized in nucleus

The size of Pleuropneumonia - like Organism (PPLO) is :

1. 0.02 $\mathrm{\mu }$m

2. 1-2 $\mathrm{\mu }$m

3. 10-20 $\mathrm{\mu }$m

4. 0.1 $\mathrm{\mu }$m

Which one of these is not a eukaryote?

1.  Euglena

2.  Anabaena

3.  Spirogyra

4.  Agaricus