Practice Questions

TLS Online TPP Program

#Question id: 4948

RNA molecules can both carry genetic information and be catalytic. This supports the proposal that

#XL - T Zoology

RNA was the first hereditary information.
protobionts had an RNA membrane.
RNA could make energy.
free nucleotides would not have been necessary ingredients in the synthesis of new RNA molecules.

More Questions

#Question id: 1730

#XL - Q Biochemistry

What is the T-cell ligand binding B7 on a professional antigen-presenting cell?

#Question id: 1731

#XL - Q Biochemistry

Which of the following statements is TRUE of Sos (Son of sevenless)?

#Question id: 1732

#XL - Q Biochemistry

Protein tyrosine kinase activity following T-cell stimulation:

#Question id: 1733

#XL - Q Biochemistry

The early increase in phospholipase Cγ1 activity following T-cell stimulation:

#Question id: 1734

#XL - Q Biochemistry

The nuclear AP-1 site responsible for 90% of IL-2 enhancer activity binds:

#Question id: 1735

#XL - Q Biochemistry

In the immunological synapse: