Which of the following enzymes are used in both base excision repair and nucleotide excision repair?

Which antibiotic is it possible for bacteria to become resistant to by completely losing a target protein or activating enzyme?

Draining an infected abscess removes many bacteria. Assume that resistant and susceptible bacteria are removed in the same proportions, and that the remaining bacteria experience the same antibiotic concentration and treatment duration. Which factor promoting the spread of resistance is directly reduced by drainage?

Based on their mechanism of action, which class of anticancer drugs would you expect to inhibit the cell cycle at the end of S phase, specifically?

A long-term scientific study took biopsies from a group of volunteers at multiple points in their life (the same tissue each time). The aim of the study was to examine the frequency of specific mutations across time. Which type of mutation would you expect to increase in frequency as individuals got older? Note: Here we are talking about the number of cells has a specific mutation, not the number of mutations in each type.

Which TWO antibiotics act synergistically by inhibiting different enzymes involved in bacterial folate metabolism?

First-line single-tablet HIV combination regimens such as Biktarvy (bictegravir / emtricitabine / tenofovir alafenamide) are designed to prevent HIV resistance and maintain durable viral suppression. Which viral steps are directly targeted by the components of this specific regimen? (Select all that apply)

Below is an image of a replication fork, with most of the protein components not shown. Which strand is the lagging strand?

In the combination drug regimen Paxlovid, what is the specific role of ritonavir when co-administered with nirmatrelvir? 

Which cells protect and assist neurons rather than primarily transmitting coded information to other cells?