Biology 9700/23 — October/November 2013
Cambridge AS Level · AS Level Structured Questions · worked solutions for every part, with the mark scheme
Topics Biological Molecules · (outdated) Ecology · Immunity · Nucleic Acids and Protein Synthesis · The Mitotic Cell Cycle · Cell Structure · +5 more
Fig. 1.1 is a diagram of an antibody molecule.
Name the part labelled X.
part labelled X = ______
Name the bond labelled Y.
bond labelled Y = ______
The antibody molecule in Fig. 1.1 has quaternary structure.
Explain the meaning of the term quaternary structure as applied to proteins.
When a pathogen enters the body, a primary immune response occurs. This response includes the production of antibodies.
Describe the stages in the immune response that lead to antibody being produced against a specific antigen.
Vaccination was used in the eradication of smallpox.
Explain, in terms of antigens, why it has not been possible to do the same for malaria.
The rest of this paper
5 more questions- Q2(outdated) Ecology · Nucleic Acids and Protein Synthesis10M
- Q3The Mitotic Cell Cycle · Cell Structure11M
- Q4Transport in Mammals · Gas Exchange10M
- Q5Biological Molecules · (outdated) Ecology · Cell Membranes and Transport13M
- Q6Transport in Plants · Enzymes7M