CAPE Biology Unit 1 · 2015 · Paper 1

43 multiple-choice items from this paper. Open one to see it in full, then practise it on Quelpr and get it marked against the mark scheme.

1. Q11 mark · multiple choicePistia stratiotes (water lettuce) is a rosette-like plant found floating in ponds and natural waterways. Which of the following properties of water assists the plants to float?
2. Q21 mark · multiple choiceWhich of the following combinations correctly describes the structure of molecules I and II?
3. Q31 mark · multiple choiceSucrose is a good transport molecule as seen in phloem tissue because sucrose is a
4. Q41 mark · multiple choiceWhich of the biological molecules forms the MAIN component of the cell membrane in animals?
5. Q51 mark · multiple choiceWhich of the following biological molecules has both hydrogen and disulphide bonds?
6. Q61 mark · multiple choiceWhich of the following combinations shows the correct sequence of the solutions, in ascending order, from the LEAST amount of reducing sugar to the MOST?
7. Q71 mark · multiple choiceWhich of the following is NOT likely to be seen in an electron micrograph of a plant cell?
8. Q81 mark · multiple choiceThe actual diameter of the stem is 10\text{ mm}. What is the magnification of the drawing?
9. Q91 mark · multiple choiceWhich of the following combinations correctly identifies structures typical of a eukaryotic cell?
10. Q101 mark · multiple choiceBobby is given a tropical freshwater fish for his birthday. Experimenting with the fish, he places it in seawater and it dies. Which of the following statements MOST likely explains the reason for its death?
11. Q111 mark · multiple choiceWhich of the following correctly describes the importance of cholesterol in a cell membrane?
12. Q121 mark · multiple choiceA plant cell is placed in Solution A, which has a lower water potential than the cell contents. Which of the following combinations shows the MOST likely change in the cell and the cause of the change?
13. Q131 mark · multiple choiceWhich of the structures, A, B, C or D, is important for cell to cell recognition?
14. Q141 mark · multiple choicePepsin is an enzyme found in the human alimentary system. Which of the above activity curves represents the action of pepsin?
15. Q151 mark · multiple choiceAccording to the endosymbiotic theory, organelles such as chloroplasts and mitochondria may have evolved from prokaryotic organisms. Which of the following is NOT a line of evidence in support of this theory?
16. Q161 mark · multiple choiceWhich of the following is found in both DNA and transfer RNA?
17. Q171 mark · multiple choiceIn protein synthesis, which two of the molecules illustrated below are involved in the process of transcription?
18. Q181 mark · multiple choiceWhich of the following amino acid sequences would be produced from information coded on the DNA strand shown below? ATGGCCAATGGCGAT
19. Q191 mark · multiple choiceWhich of the following is NOT a feature of the genetic code?
20. Q201 mark · multiple choiceThe following diagram shows the structure of a tRNA molecule. Which letter, A, B, C or D, indicates the position on the molecule where the amino acid would be attached?
21. Q211 mark · multiple choiceWhich two of the following features are evident during mitosis? I. Two daughter nuclei containing identical sets of chromosomes. II. Homologous chromosomes come together and crossing over occurs. III. Four daughter…
22. Q221 mark · multiple choiceWhich of the following is NOT true of most homologous chromosomes?
23. Q241 mark · multiple choiceThe genotype wwAa is
24. Q251 mark · multiple choiceWhat is the phenotypic ratio of the F_2 from a cross between two F_1 with the genotype WwAa?
25. Q261 mark · multiple choiceA possible benefit of producing transgenic plants is
26. Q271 mark · multiple choiceIn the production of recombinant DNA, restriction enzymes are used to cut double stranded DNA molecules to form fragments. Which bonds are cut by these enzymes?
27. Q281 mark · multiple choiceWhich of the following is NOT one of Darwin's observations about natural selection?
28. Q291 mark · multiple choiceMutations can have varying effects on an organism depending on when it occurs. The occurrence of a mutation has the GREATEST effect during
29. Q301 mark · multiple choiceWhich type of isolation plays the MOST significant role in allopatric speciation?
30. Q311 mark · multiple choiceA horticulturalist has bred a Hibiscus variety which bears violet flowers. Which method of propagation would be MOST appropriate for rapid production of a large number of clonal plants?
31. Q321 mark · multiple choiceWhich of the following occur in asexual reproduction ONLY?
32. Q331 mark · multiple choiceWhich of the following terms is the MOST appropriate to describe a plant in which the anthers of the flower mature before the stigma?
33. Q341 mark · multiple choiceWhich of the following methods of asexual reproduction is INCORRECT, either by its definition or its examples?
34. Q361 mark · multiple choiceWhich row in the following table shows the correct chromosome number for the structures indicated?
35. Q371 mark · multiple choiceThe role of Y is to
36. Q381 mark · multiple choiceThe structure labelled H is
37. Q391 mark · multiple choiceAt which of the regions labelled I, II, III and IV does fertilization take place?
38. Q401 mark · multiple choiceDuring spermatogenesis in a human, the first cells to divide meiotically are
39. Q411 mark · multiple choiceThe hormones W, X, Y and Z are
40. Q421 mark · multiple choiceA sample of a woman's urine is tested at a laboratory and human chorionic gonadotrophin is detected. This indicates that
41. Q431 mark · multiple choiceThe hormone which stimulates the development of the endometrium (lining of the uterus) is
42. Q441 mark · multiple choiceThe correct sequence of events is I. Inner cell mass forms. II. The allantois fuses with the chorion. III. Chorionic villi grow. IV. Maternal blood spaces form.
43. Q451 mark · multiple choiceDuring the development of a foetus in the womb, the uterus wall consists of the muscle of the uterus wall and the