Biology 9700/21 — May/June 2020
Cambridge AS Level · AS Level Structured Questions · worked solutions for every part, with the mark scheme
Topics Biological Molecules · The Mitotic Cell Cycle · Enzymes · Transport in Mammals · Gas Exchange · Infectious Diseases · +2 more
Fig. 1.1 shows five biological molecules.
State the name of the bond in molecule A indicated by the arrow.
Molecule B is described as a saturated fatty acid.
State why molecule B is described as a saturated fatty acid.
Molecule D is a polymer.
State the name of the monomer that is used to synthesise this polymer.
State the letter of the molecule that could be formed during the hydrolysis of a polypeptide.
State the letter of the molecule that forms part of the cell surface membranes of eukaryotic cells.
Molecule A and molecule C dissolve in water. Molecule B does not dissolve in water.
Explain why molecule A and molecule C dissolve in water, but molecule B does not dissolve in water.
The rest of this paper
5 more questions- Q2The Mitotic Cell Cycle11M
- Q3Enzymes · Biological Molecules9M
- Q4Transport in Mammals · Gas Exchange16M
- Q5Infectious Diseases · Immunity14M
- Q6Nucleic Acids and Protein Synthesis4M