Practice Questions

TLS Online TPP Program

#Question id: 370

Which of the following statements is true about buffer solutions?

#XL - Q Biochemistry

They maintain a constant pH of 7.
They maintain a constant pH when acids are added to them but not when bases are added to them.
They fluctuate in pH when either acids or bases are added to them.
They maintain a relatively constant pH when either acids or bases are added to them.

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TLS Online TPP Program

#Question id: 1749

#XL - Q Biochemistry

The αβ heterodimeric form of the IL-2 receptor:

TLS Online TPP Program

#Question id: 1750

#XL - Q Biochemistry

IFNγ and TNF (TNFα) can act synergistically:

TLS Online TPP Program

#Question id: 1751

#XL - Q Biochemistry

Which of the following is characteristically produced by the Th2 CD4 cells which provide help for antibody production, but not by Th1 cells?

TLS Online TPP Program

#Question id: 1752

#XL - Q Biochemistry

Dendritic cells can be driven from a resting state to an activated state by the T-cell surface molecule:

TLS Online TPP Program

#Question id: 1753

#XL - Q Biochemistry

In the germinal center, B-cells become memory cells under the influence of:

TLS Online TPP Program

#Question id: 1754

#XL - Q Biochemistry

High affinity B-cell clones in mammals are usually generated by: