Biology 9700/21 — October/November 2022
Cambridge AS Level · AS Level Structured Questions · worked solutions for every part, with the mark scheme
Topics Transport in Mammals · Immunity · Biological Molecules · Nucleic Acids and Protein Synthesis · Cell Structure · Cell Membranes and Transport · +4 more
Fig. 1.1 is a transmission electron micrograph showing a section of a human liver cell.
Name organelles A and B shown in Fig. 1.1.
A ______
B ______
In liver cells, enzymes are attached to the membrane of smooth endoplasmic reticulum.
With reference to the functions of smooth endoplasmic reticulum, suggest the advantages of having enzymes attached to the membrane rather than free in the lumen.
Explain the advantages of using a transmission electron microscope compared with a light microscope when viewing a liver cell.
The rest of this paper
5 more questions- Q2Transport in Mammals · Immunity12M
- Q3Biological Molecules · Transport in Mammals · Nucleic Acids and Protein Synthesis12M
- Q4Cell Structure · Cell Membranes and Transport · Immunity · Nucleic Acids and Protein Synthesis · Biological Molecules8M
- Q5Transport in Plants · Cell Structure · Enzymes · Infectious Diseases13M
- Q6The Mitotic Cell Cycle7M