Practice Questions

TLS Online TPP Program

#Question id: 5000

The existence of evolutionary trends, such as increasing body sizes among horse species, is evidence that

#Unit 11. Evolution and Behavior

a larger volume-to-surface area ratio is beneficial to all mammals.
an unseen guiding force is at work.
evolution always tends toward increased complexity or increased size.
in particular environments, similar adaptations can be beneficial in more than one species.

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TLS Online TPP Program

#Question id: 15455

#Unit 4. Cell Communication and Cell Signaling

Variable region of antibody containing sequence motif DGYW/WRCH, which are responsible for mutation, where R, W, H represented as____

TLS Online TPP Program

#Question id: 15454

#Unit 4. Cell Communication and Cell Signaling

B cells migrate to the lymphoid follicles, they are directed by chemokine interaction_________, which is secreted by follicular dendritic cells (FDCs)

TLS Online TPP Program

#Question id: 15453

#Unit 4. Cell Communication and Cell Signaling

Activated B cells divide and differentiate into antibody-producing plasma cells, this process occurred in

TLS Online TPP Program

#Question id: 15452

#Unit 4. Cell Communication and Cell Signaling

During activation of B-cell, T cell delivers cytokines and other signals to its partner B cell. Which types of cytokine signals secreted by T-cells?

TLS Online TPP Program

#Question id: 15451

#Unit 4. Cell Communication and Cell Signaling

T-cell dependent, B-cell activation require many signals except___

TLS Online TPP Program

#Question id: 15450

#Unit 4. Cell Communication and Cell Signaling

T-cell dependent response requires a signal is provided by an activated T cell, which binds to the B cell through,

a) lipopolysaccharide moiety

b) its antigen receptor

c) A separate interaction between CD40L on the B cell and CD40 (CD154) on the activated TH cell

d) A separate interaction between CD40 on the B cell and CD40L (CD154) on the activated TH cell