CAPE Biology Unit 1 · 2007 · Paper 1

40 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 choiceOne of the roles of water in living organisms is that it acts as a transport medium in blood. Which of the following properties of water accounts for this role?
2. Q21 mark · multiple choiceThe diagram below shows a ring structure of glucose. Which of the following indicates the form of glucose and in which molecule it is present?
3. Q31 mark · multiple choiceThis figure below is part of a growing polysaccharide chain. The name of the bond labelled X is
4. Q41 mark · multiple choiceThe diagram below shows the structure of a triglyceride. Which of the following represents the bond labelled X?
5. Q51 mark · multiple choiceWhich of the following correctly names the type of bond represented by the broken line (---) in the diagram above?
6. Q61 mark · multiple choiceFood tests were carried out on four different solutions. Which of the following combinations shows the solutions that contained only starch and sucrose?
7. Q71 mark · multiple choiceThe following is an electron micrograph of a section of an animal cell. Which of the structures labelled I, II, III and IV is concerned with protein synthesis?
8. Q81 mark · multiple choiceWhich of the following is NOT a function of the Golgi apparatus?
9. Q101 mark · multiple choiceWhich of the following combinations correctly identifies the phloem and xylem tissues?
10. Q111 mark · multiple choiceWhich of the following cells is represented by the diagram below?
11. Q121 mark · multiple choiceWhich of the following identifies the structure represented by X in the diagram below?
12. Q131 mark · multiple choiceFour identical samples of plant tissue are placed in four different solutions. Each sample of plant tissue has a water potential of -800 kPa. In which solution would full plasmolysis occur within the tissue? The…
13. Q141 mark · multiple choiceWhich of the following pairs of statements explains the mode of action of enzymes? I. They are globular proteins and as a result are soluble. II. They bond to the substrate molecules at their active sites. III. They…
14. Q151 mark · multiple choiceThe activation energy for an enzyme-catalysed reaction is represented by the region labelled
15. Q161 mark · multiple choiceThe graph below shows the time course of the activity of the enzyme sucrase at various temperatures. At which of the following temperatures does the enzyme work at the FASTEST rate?
16. Q171 mark · multiple choiceWhich of the following is NOT represented by the region labelled X?
17. Q181 mark · multiple choiceWhich of the following events occurs in transcription as well as in replication of DNA?
18. Q191 mark · multiple choiceThe amino-acid sequence leucine-lysine-valine occurs in a portion of a polypeptide molecule. The table below shows the DNA codes for these amino-acids. \begin{array}{|c|c|c|}\hline \text{Leucine} & \text{Lysine} &…
19. Q201 mark · multiple choiceOne structure that may be observed in animal cells during mitosis but is NOT seen in plant cells is
20. Q211 mark · multiple choiceWhich of the following statements correctly describes homologous chromosomes? I. They are the same length. II. They are held together by centromere. III. They have the same gene loci. IV. They have identical alleles.
21. Q221 mark · multiple choiceWhich of the following combinations correctly represents the chronological order of the events occuring in meiosis? I. Chromatid pairs line up at right-angles to the equatorial plane. II. Homologous chromosomes are…
22. Q231 mark · multiple choiceThe areas labelled X represent
23. Q241 mark · multiple choiceThe micropyle and funicle are represented by
24. Q251 mark · multiple choiceThe following diagram shows the formation of gametes in a carpel of a flowering plant. Which of the following correctly identifies the number of sets of chromosomes present at each numbered stage?
25. Q261 mark · multiple choiceWhich of the following identifies the structure which provides nourishment for the sperm-producing cells in the testes?
26. Q271 mark · multiple choiceOne feature that is common to both sperm, (male gamete) and egg (female gamete), is
27. Q281 mark · multiple choiceThe following list represents some stages in the process of fertilization: I. Acrosome releases enzymes. II. Sperm enters cell. III. Sperm contacts jelly coat of egg. IV. Impenetrable layer forms at egg surface. Which…
28. Q301 mark · multiple choiceFlower colour in a certain species of plant can be white, light pink or dark pink. There are two hypotheses to explain this: Hypothesis 1: There are two co-dominant alleles. Hypothesis 2: There are three alleles, one…
29. Q311 mark · multiple choiceTwo parents, both of blood group A, have a son of blood group A. The probability that their next child will have blood group O is
30. Q321 mark · multiple choiceWhich females are heterozygous for the disorder?
31. Q331 mark · multiple choiceWhich of the following does NOT cause variation to occur in a population?
32. Q341 mark · multiple choiceWhich of the following increases the number of different alleles in a population of organisms?
33. Q351 mark · multiple choiceIn the hereditary disease, sickle-cell anaemia, the amino acid, glutamic acid, found in normal haemoglobin, is substituted at a particular location by the amino acid valine. The codon for glutamic acid is GAA. The…
34. Q361 mark · multiple choiceIn the Caribbean, sweet potato plants are propagated asexually by tubers. Twenty tubers collected from one plant were grown to produce 20 second-generation plants. All the tubers from these second-generation plants were…
35. Q371 mark · multiple choiceWhich of the above represents the genus to which the green monkey belongs?
36. Q381 mark · multiple choiceThree of the hypotheses in the theory of natural selection are: I. Individuals may differ from one another as a result of chance variation. II. More offspring are born than can survive and reproduce. III. There is a…
37. Q391 mark · multiple choiceSpeciation is the process by which new species arise. Which TWO of the following ways, listed I to IV, BEST promote this? I. Organisms produce large numbers of progeny. II. A local population becomes isolated from the…
38. Q401 mark · multiple choiceConsider the following kingdoms: Fungi, Prokaryotes, Plants, Protoctists Match EACH organism below with the kingdoms above.
39. Q431 mark · multiple choiceWhich of the following is an example of in situ conservation of an endangered species?
40. Q441 mark · multiple choiceWhich of the following is NOT a conservation aim when zoos are established?