Which of the following protein complexes in the electron transport chain does NOT have a channel to pump protons from one side of the membrane to the other?

How many bases in a sequence code for an amino acid?

In PCR, what temperature is needed to unwind DNA and make it single stranded so that it can hybridize with the primer?

Examine the following structural formula containing guanine, a sugar, and phosphate groups. image005647d0b9e.jpg Which of the following is the abbreviated name of this substance?

If you started with 6 molecules of DNA and performed 12 cycles of PCR, how many molecules of DNA would you end up with?

Which of the following enzymes joins the two sticky ends of DNA?

How many sites are present within the full ribosomal complex?

Identify a metabolic pathway associated with the enzymes localized in the cytoplasm.

Given the codon table below… Codon Table(1).png Which of the following two tRNA anticodons (shown in the 3’→5’ direction) below would be used to recognize all the codons for Ile and Met and would lead to the correct insertion of Ile or Met during translation.

Which of the following is a function of a restriction endonuclease?