Academic Integrity: tutoring, explanations, and feedback — we don’t complete graded work or submit on a student’s behalf.

The Arp 2/3 complex promotes actin nucleation true or false. Bending of the cili

ID: 85833 • Letter: T

Question

The Arp 2/3 complex promotes actin nucleation true or false.
Bending of the cilium is dependent on the kinesin motor protein true or false.
During muscle contraction the length of the actin filaments in the sarcomere decrease true or false. The Arp 2/3 complex promotes actin nucleation true or false.
Bending of the cilium is dependent on the kinesin motor protein true or false.
During muscle contraction the length of the actin filaments in the sarcomere decrease true or false.
Bending of the cilium is dependent on the kinesin motor protein true or false.
During muscle contraction the length of the actin filaments in the sarcomere decrease true or false.

Explanation / Answer

1) True: Arp 2/3 complex is involved in nucleation of actin polymerization and branching of filaments.

2) False: Bending of  cilium involves ATP-dependent walking of a dynein motor protein.

3) False: During muscle contraction the length of the actin filaments and myosin filaments remains the same but the length of sarcomere shortens.