Nuclear envelope is derivative of 

1. smooth endoplasmic reticulum

2. memebrane of Golgi complex

3. microtubles

4. rough endoplasmic reticulum

Cytochromes are found in

1. matrix of mitochondria

2. outer wall of mitochondria

3. cristae of mitochondria

4. lysosomes

Which structures perform the function of mitochondria in bacteria?

1. Nucleoid

2. Ribosomes

3. Cell wall

4. Mesosomes

The solid linear cytoskeletal elements having a diameter of 6nm and made up of a single

type of monomer are known as

1. microtubules

2. microfilaments

3. intermediate filaments

4. lamins

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

A major site for synthesis of lipids is

1. RER

2. SER

3. symplast

4. nucleoplasm

The Golgi complex plays a major role:

Ribosomal RNA is actively synthesized in

1. lysosomes

2. nucleolus

3. nucleoplasm

4. ribosomes

What is true about ribosomes?

1. The prokaryotic ribosomes are 80 S, where S stands for sedimentation coefficient

2. These are composed of ribonucleic acid and proteins

3. These are found only in eukaryotic cells

4. These are self-splicing introns of some RNAs