Biology 9700/21 — October/November 2020
Cambridge AS Level · AS Level Structured Questions · worked solutions for every part, with the mark scheme
Topics The Mitotic Cell Cycle · Cell Structure · Biological Molecules · Cell Membranes and Transport · Enzymes · Transport in Mammals · +5 more
Fig. 1.1 is a diagram of a human chromosome at a stage in mitosis.
The paragraph describes the structure of the chromosome shown in Fig. 1.1.
Complete the paragraph using the most appropriate term in each space provided.
The chromosome shown in Fig. 1.1 has two genetically identical ______ joined at a ______ . The chromosome is composed of two DNA molecules, each wrapped around proteins known as ______ proteins.
State one stage during mitosis when the chromosome would appear as shown in Fig. 1.1.
Suggest the role of ATP in the process of mitosis.
Prokaryotes divide by a process known as binary fission.
Fig. 1.2 shows some of the stages in binary fission.
With reference to Fig. 1.2, identify two events that occur during binary fission that do not occur during mitosis in human cells.
The rest of this paper
5 more questions- Q2Biological Molecules · Enzymes · Cell Membranes and Transport11M
- Q3Transport in Mammals · Infectious Diseases9M
- Q4Cell Structure · Transport in Plants10M
- Q5Gas Exchange · Cell Membranes and Transport · Biological Molecules13M
- Q6The Mitotic Cell Cycle · Nucleic Acids and Protein Synthesis · Immunity9M