Which of the following substances enhances the sensitivity of pain receptors but does not directly excite them?

TLS Online TPP Program

#Question id: 32378

#Unit 2. Cellular Organization

The soluble myosin II molecule is actually a protein complex consisting of:

TLS Online TPP Program

#Question id: 32379

#Unit 2. Cellular Organization

Soluble myosin II can be cleaved by gentle treatment with the protease chymotrypsin to yield following fragments. Which fragments have the activity?

TLS Online TPP Program

#Question id: 32380

#Unit 2. Cellular Organization

Which of the following protein consists almost entirely of a repeating 35-amino-acid actin-binding motif?

TLS Online TPP Program

#Question id: 32381

#Unit 2. Cellular Organization

What is the primary function of ATP hydrolysis in the myosin head?

TLS Online TPP Program

#Question id: 32382

#Unit 2. Cellular Organization

In which case the myosin head is firmly attached to the actin filament?

a. Presence of ATP

b. Absence of ATP

c. Presence of Ca2+

d. Absence of Ca2+

TLS Online TPP Program

#Question id: 32383

#Unit 2. Cellular Organization

Which of the following state is very short-lived, in an actively contracting muscle?