CAPE Biology Unit 1 · 2014 · Paper 1

44 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 choiceWhich three of the following characteristics of water are of biological significance? I. Excellent solvent properties. II. Relatively high heat capacity. III. Lower surface tension than most liquids. IV. Density…
2. Q21 mark · multiple choiceWhich of the following is NOT a polymer?
3. Q31 mark · multiple choiceWhich of the following BEST represents the structure of a triglyceride?
4. Q41 mark · multiple choiceItem 4 refers to the following molecules. Which of the following bonds is formed between these two molecules during a condensation reaction?
5. Q51 mark · multiple choiceItem 5 refers to the following information. A student crushes two foods, X and Y, and performs food tests on the extracts. The results are shown in the table below. \begin{tabular}{|l|l|l|} \hline…
6. Q61 mark · multiple choiceWhich of the following occurs in the tertiary structure but NOT in the primary structure of a protein?
7. Q71 mark · multiple choiceWhat is the HIGHEST level of protein structure exhibited by haemoglobin?
8. Q81 mark · multiple choiceItem 8 refers to the following diagram showing a chloroplast. Which of the following is true about the thylakoid?
9. Q91 mark · multiple choiceWhich of the following is NOT likely to be seen in an electron micrograph of a plant cell?
10. Q101 mark · multiple choiceWhich structure is found in BOTH a prokaryotic and eukaryotic cell?
11. Q111 mark · multiple choiceThe table below shows three processes involved in the movement of substances across cell membranes. Which of the following correctly states whether the three processes shown are active or passive in nature?…
12. Q121 mark · multiple choiceFour cylinders of equal mass are cut from a single potato. One cylinder is placed in distilled water and the others in 0.2\text{ M}, 0.4\text{ M} and 0.8\text{ M} sucrose solution, respectively. Each cylinder is…
13. Q131 mark · multiple choiceWhich graph shows the changes in substrate concentration during the course of an enzyme-catalysed reaction?
14. Q141 mark · multiple choiceWhich of the following graphs BEST shows the effect of pH on the reaction velocity of an enzyme?
15. Q151 mark · multiple choiceItem 15 refers to the graph below showing the rates of reaction of an enzyme with and without inhibitors. Which of the following describes the reaction represented by the curves, X, Y and Z? \begin{tabular}{|l|c|c|c|}…
16. Q161 mark · multiple choiceWhich of the following diagrams illustrates the semi-conservative method of replication of DNA?
17. Q171 mark · multiple choiceItem 17 refers to the following process of transcription occurring in a cell nucleus. The base sequence of the codon labelled X is
18. Q181 mark · multiple choiceItem 18 refers to the following process of translation occurring at a ribosome in a cell that synthesises enzymes. The structure, P, MOST likely represents
19. Q191 mark · multiple choiceItem 19 refers to the following drawings illustrating four stages in mitosis. The correct order of these mitotic stages is
20. Q201 mark · multiple choiceWhich of the following is NOT true of homologous chromosomes?
21. Q211 mark · multiple choiceItem 21 refers to the graph below which represents the relative amounts of DNA per nucleus during many cell divisions in an animal cell. Which of the following processes are occurring at A and B?…
22. Q221 mark · multiple choiceItems 22–23 refer to the following information. A particular breed of domestic cats can have either black, white or brown fur colour. The dominant allele, B, of one gene gives black fur and the recessive allele, b,…
23. Q231 mark · multiple choiceItems 22–23 refer to the following information. A particular breed of domestic cats can have either black, white or brown fur colour. The dominant allele, B, of one gene gives black fur and the recessive allele, b,…
24. Q241 mark · multiple choiceEnvironmental factors that keep populations in check are called selection pressures. Which of the following is LEAST likely to be an example of selection pressure?
25. Q251 mark · multiple choiceMutations may arise due to non-disjunction of chromosomes. In which of the following would such a mutation be transmitted to the offspring?
26. Q261 mark · multiple choiceA possible benefit of producing transgenic plants is
27. Q271 mark · multiple choiceItems 27–28 refer to the following map of a plasmid showing the position of recognition sequences of two restriction enzymes. In an experiment to use this plasmid as a vector for the human insulin gene, for which of…
28. Q281 mark · multiple choiceItems 27–28 refer to the following map of a plasmid showing the position of recognition sequences of two restriction enzymes. In addition to the human insulin gene, which of the following would be required to produce a…
29. Q291 mark · multiple choiceWhich of the following plays the MOST significant role in allopatric speciation?
30. Q301 mark · multiple choiceIn sickle-cell anaemia, the sickling of red blood cells is a result of a mutation of
31. Q311 mark · multiple choiceItems 31–32 refer to the following diagram showing the embryo sac of a flowering plant. In answering items 31–32, each labelled part may be used once, more than once or not at all. Which of the labelled structures is…
32. Q321 mark · multiple choiceItems 31–32 refer to the following diagram showing the embryo sac of a flowering plant. In answering items 31–32, each labelled part may be used once, more than once or not at all. Which of the labelled structures…
33. Q331 mark · multiple choiceWhich of the following are formed during the development of pollen grains?
34. Q341 mark · multiple choiceWhich of the following types of plants use mechanisms which guarantee cross fertilization?
35. Q351 mark · multiple choiceA horticulturalist has bred a \textit{Hibiscus} variety which bears violet flowers. Which method of propagation would be MOST appropriate for rapid production of a large number of clonal plants?
36. Q361 mark · multiple choiceWhich of the following occur in asexual reproduction ONLY?
37. Q371 mark · multiple choiceItem 37 refers to the following flow chart which shows the life cycle of a flowering plant. Which of the following pairs correctly shows where meiosis takes place?
38. Q381 mark · multiple choiceWhich of the following is true about double fertilization in flowering plants?
39. Q391 mark · multiple choiceItem 39 refers to the following diagram which shows the changes in the levels of the ovarian hormones which regulate the human menstrual cycle. Which of the following BEST describes the events highlighted by the arrows…
40. Q401 mark · multiple choiceItem 40 refers to the following diagram showing the key stages of oogenesis. Which of the following shows the correct number of chromosomes for Stages I, II and IV? \begin{tabular}{|c|c|c|c|} \hline & \textbf{I} &…
41. Q421 mark · multiple choiceHuman spermatozoa have to spend several hours in the female genital tract before they can fertilize an oocyte. During this time, they are activated in a process called
42. Q431 mark · multiple choiceItem 43 refers to the following diagram which shows a transverse section through the middle piece of a spermatozoon. The structure labelled H is MOST likely
43. Q441 mark · multiple choiceItems 44–45 refer to the following diagram of a small section of the human placenta as seen in an electron micrograph. Which of the following options is correct for two visible differences between the maternal red…
44. Q451 mark · multiple choiceItems 44–45 refer to the following diagram of a small section of the human placenta as seen in an electron micrograph. Which of the following correctly identifies the structures, X and Y? \begin{tabular}{|l|l|l|}…