Chromatophores are:

1. present in liopolysaccharide layer of gram negative bacteria

2. colored pigments present in fluorescent bacteria

3. vesicles that store pigments in prokaryotic cells

4. extensions on membrane in cynobacteria 

The tail of the phospholipid molecule:

1. is hydrophilic and composed of phosphate

2. is hydrophilic and composed of saturated hydrocarbons

3. is hydrophobic and composed of saturated hydrocarbons

4. is hydrophobic and composed of unsaturated hydrocarbons

In animal cells, lipid-like steroidal hormones are synthesized in the:

1. Nucleus

2. Rough endoplasmic reticulum

3. Smooth endoplasmic reticulum

4. Golgi apparatus

Unless specifically stained by a vital stain like Janus Green, which of the following will not be visible under a microscope?

1. Rough endoplasmic reticulum

2. Smooth endoplasmic reticulum

3. Golgi apparatus

4. Mitochondria

Fat soluble pigments like xanthophylls are present in:

1. Chromoplasts

2. Aleuroplasts

3. Elaioplasts

4. Amyloplasts

Which one of the following is incorrect statement

(1) All organisms are composed of cells

(2) Cell is the basic unit of life

(3) All inanimate things are made up of cells

(4) Virus is acellular

Which one of the following is  incorrect statement

(1) Organisms composed of single cell are unicellular

(2) Organisms composed of many cells are multicellular

(3) Organisms which are not composed of any cell are acellular

(4) Organisms which are composed of single cell is acellular

Which of the following is true about unicellular organism ?

(1)anything less than a complete structure of a cell does not ensure independent living

(2)it is capable of independent existence

(3)cell is structural and functional unit

(4)All of the above

The first living cell was described by

1. Anton Von Leeuwenhoek

2. Robert Brown

3. Robert Hooke

4. Both A and B

With the discovery of which of the following, the study of the structural details was made possible

(1)compound microscope

(2)electron microscope

(3)cryo-electron microscope

(4)Fluorescent microscope