In skeletal muscle the cytoplasmic Ca2+ concentration is restored to resting levels within 30 milliseconds, allowing the:

a. Binding of tropomyosin with myosin

b. Binding of calcium with troponin C 

c. Myofibrils to relax

d. Myofibrils to contract

TLS Online TPP Program

#Question id: 1711

#Unit 4. Cell Communication and Cell Signaling

On entering a germinal center, the primary B-blasts grow exponentially to form which cell type in the dark zone?

TLS Online TPP Program

#Question id: 1712

#Unit 4. Cell Communication and Cell Signaling

The tingible bodies inside germinal center macrophages are:

TLS Online TPP Program

#Question id: 1713

#Unit 4. Cell Communication and Cell Signaling

The paracortical area of a lymph node comprises mainly:

TLS Online TPP Program

#Question id: 1714

#Unit 4. Cell Communication and Cell Signaling

In a lymph node, the antigen pneumococcus polysaccharide SIII leads to:

TLS Online TPP Program

#Question id: 1715

#Unit 4. Cell Communication and Cell Signaling

Which of the following lymphoid tissues is unencapsulated?

TLS Online TPP Program

#Question id: 1716

#Unit 4. Cell Communication and Cell Signaling

Expression of a CD8 α-α homodimer is characteristic of: