Proteins can be attached to the phospholipid bilayer plasma membrane by covalently linked hydrocarbon groups. Which of the following mechanisms are not employed in this anchoring?

#Question id: 2433

#Section 3: Genetics, Cellular and Molecular Biology

All types of myosins

a. bind and hydrolyze ATP.               

b. bind actin filaments.

c. form dimers.                       

d. contain an associated myosin light chain.

e. move toward the (+) end of an actin filament.

#Question id: 2437

#Section 3: Genetics, Cellular and Molecular Biology

Membrane extension involves

a. bending actin filaments.                   

b. myosin II.

c. the Arp2/3 nucleation of new filaments.

d. actin depolymerization.     

e. actin polymerization.

#Question id: 2447

#Section 3: Genetics, Cellular and Molecular Biology

In the axonemes, the arrangement of nine outer doublet microtubules, as well as the protofilament number of each outer doublet, is specified by

#Question id: 2449

#Section 3: Genetics, Cellular and Molecular Biology

What is the correct order of the stages of mitosis?

a. anaphase               

 b. metaphase              

c. telophase    

d. prophase                 

e. prometaphase

#Question id: 2452

#Section 3: Genetics, Cellular and Molecular Biology

Intermediate filaments

a. are typically 6 nm in diameter.                  

b. are essential for cell motility.

c. may be used to diagnose the tissue of origin for many cancers.

d. are composed of globular subunits.                       

e. are formed from tetrameric subunits.

#Question id: 2454

#Section 3: Genetics, Cellular and Molecular Biology

In the cell, intermediate filament disassembly is triggered by