Which of the following is not a receptor tyrosine kinase? A) Epidermal growth fa

Question

Which of the following is not a receptor tyrosine kinase?

A) Epidermal growth factor (EGF)

B) Platelet-derived growth factor (PDGF)

C) Transforming growth factor (TGF)

D) Fibroblast growth factor (FGF)

E) Colony-stimulating factor-1(CSF-1)

Which of the following is not a function of the cytoskeleton?

A) cell movement

B) cell division

C) moving of organelles

D) intracellular vesicular transport

E) passive transport of water into the cell

Microfilament has a diameter of about ___________ and Microtubules have an outer diameter of ________.

A) 25 mm; 25 mm

B) 8 nm; 25 nm

C) 25 nm; 30 nm

D) 25 nm; 8 nm

E) 20 mm; 14 mm

Microfilaments function in

A) muscle contraction.

B) cytoplasmic streaming.

C) cell division.

D) maintenance of cellular shape in animal cells.

E) all of the above

Which of the following is/are cellular activities associated with microtubules?

A) maintenance of axons

B) cell shape

C) orientation of cellulose microfibrils

D) mititotic spindle

E) all of the above

Intermediate filaments

A) can be composed of the protein vimentin.

B) are compared of G-actin monomers.

C) are composed of ?-and ?-tubulin.

D) are 700 nm in diameter.

E) all of the above

Elongation of the microtubule occurs by the

A) addition of tubulin subunits to (

Explanation / Answer

1) C) Transforming growth factor (TGF)

2) A) cell movement

3) D) 25 nm; 8 nm

4) E) all of the above

5) E) all of the above

6) A) can be composed of the protein vimentin.

7) C) addition of the tubulin subunits to the (+) end but removal from the (

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