The following enzymes are actually RNA molecules with catalytic (enzymatic) activity: RNA polymerase II

Which are features of a DNA double helix? (More than one may be correct)

The level of cyclic AMP in E. coli cells grown in the presence of glucose and lactose will be:

A nucleic acid with a base composition of 20% adenine, 25% uracil, 32% guanine and 23% cytosine is:

Indicate whether the following statements about eukaryotic transcription factors (TF) are true or false Multiple transcription factor binding sites can be present in a single gene

Which of the following is a common DNA binding domain?

A polyclonal antibody is (choose the best answer)

In eukaryotes, RNA polymerase II is responsible for

The antigen-detecting portion of an antibody is called:

A 6 kb circular plasmid has sites for the restriction enzyme XhoI at positions 1 kb and 5 kb, and a site for HindIII at position 5 kb. If this plasmid is cut with both enzymes, the resulting DNA fragments will have sizes: