AP Biology 2020 Sample Questions And Answers

Related Pages
Biology Lessons & Past Papers

Share this page to Google Classroom

Questions And Worked Solutions For AP Biology 2020 Sample Exam

2020 AP Biology Sample Free Response Questions & Solutions

AP Biology 2020 Sample Free Response Questions - Complete Paper (pdf)

  1. In many countries, Anopheles gambiae mosquitoes are responsible for transmitting the parasite that causes malaria to people through their bites. A primary tool for mosquito control is the use of insecticidal nets sprayed with chemicals known as pyrethroids, which are relatively safe for people but toxic to mosquitoes. However, mosquito resistance to pyrethroids has now become widespread. Pyrethroids interfere with the function of a transmembrane sodium channel found in cells of the mosquitoes (Figure 1). In one common mutation to the channel protein, a phenylalanine is substituted for a leucine at amino acid position 1014. Scientists hypothesize that this mutation is responsible for some cases of pyrethroid resistance. …

Try the free Mathway calculator and problem solver below to practice various math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.
Mathway Calculator Widget

We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.