Biology 7401: Cells Topical Past Paper Questions
AQA AS Biology (7401) past-paper questions on Cells, free. This topic is frequently examined across 9 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
Disinfectants are used to kill microorganisms on non-living surfaces. A student investigated the effect of different concentrations of disinfectant X on the growth of Bacillus subtilis. The student: • added 5 cm $ ^{3} $ of a different concentration of disinfectant X to 5 differe…
1) Outline the similarities in, and the differences between, the structures of DNA and RNA molecules. [6 marks] Outline the similarities in, and the differences between, the structures of chloroplasts and mitochondria. and mitochondria. [4 marks]
Read the following passage. The placenta is a specialised exchange surface. In the placenta, substances are exchanged between the blood of a fetus and the blood of its mother. Gas exchange for the fetus occurs in the placenta. There is also transfer of IgG antibodies in the place…
Sign in required
Full Cells question set, mark schemes and AI worksheets
Log in for the full topic-segregated question set, mark schemes, and AI worksheets built from every Biology past paper. New accounts start with 25 free credits.
Explore all Biology topics
All Biology topics