Match each item in Column I with one item in Column II and chose your answer from the codes given below.

Codes:

                I            II            III

1.             1            2             3 

2.             2            3             1

3.             2            1             3

4.             3            2             1

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

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

Cytoskeleton is made up of

1. calcium carbonate granules

2. callose deposits

3. cellulosic microfibrils

4. proteinaceous filaments

Which of the following cytoskelelal components of an eukaryotic cell play a major role in

protoplasmic streaming?

1. Microtubules

2. microfilaments

3. Intermediate filaments

4. None of these

Microtubules are absent in

(1) mitochondria

(2) flagella

(3) spindle fibres

(4) centriole

Cytoskeleton comprises of

(1)Microtubule

(2)Microfilament

(3)Intermediate filament

(4)All of the these

Which of the following are the functions of cytoskeleton?

1. mechanical support

2. motility

3. maintenance of the shape of the cell

4. all of the above

Cytoskeleton is made up of

(1)Proteins

(2)carbohydrates

(3)lipids

(4)All of these

Mitotic spindles are mainly composed of which protein?