Biology 9700/21 — October/November 2016
Cambridge AS Level · AS Level Structured Questions · worked solutions for every part, with the mark scheme
Topics Infectious Diseases · Enzymes · Cell Structure · The Mitotic Cell Cycle · Cell Membranes and Transport · Transport in Plants · +5 more
Fig. 1.1 is a transmission electron micrograph of part of an animal cell.
Name the structures A, B and C.
A ______
B ______
C ______
Name one structure, visible in Fig. 1.1, that would also be present in a prokaryotic cell.
Cells such as that in Fig. 1.1 can divide by mitosis.
Describe the role of centrioles in mitosis.
Sodium ions cross cell surface membranes using facilitated diffusion or active transport.
Explain why sodium ions cross cell surface membranes by these mechanisms and not by simple diffusion.
The rest of this paper
5 more questions- Q2Transport in Plants8M
- Q3Biological Molecules · Infectious Diseases · Enzymes13M
- Q4Infectious Diseases · Nucleic Acids and Protein Synthesis · Enzymes13M
- Q5Immunity6M
- Q6Gas Exchange · Transport in Mammals11M