TLS Online TPP Program

#Question id: 3950


Which of the following in not true of the nuclear envelope?

#Section 3: Genetics, Cellular and Molecular Biology
  1. The nuclear envelope is exactly like other cellular membranes.

  2. The nuclear envelope separates the genetic material from the cytoplasm.

  3. the nuclear envelope is a pair of concentric membranes.

  4. The nuclear envelope is studded with pores.

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TLS Online TPP Program

#Question id: 2337

#Section 3: Genetics, Cellular and Molecular Biology

Centrioles may have originated as

TLS Online TPP Program

#Question id: 2415

#Section 3: Genetics, Cellular and Molecular Biology

Within an actin filament, each actin subunit is surrounded by how many neighboring actin subunits?

TLS Online TPP Program

#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.

TLS Online TPP Program

#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.

TLS Online TPP Program

#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

TLS Online TPP Program

#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