TEST CODE
01207010
FORM SPEC 2015 CARIBBEAN EXAMINATIONS
COUNCIL
SECONDARY EDUCATION CERTIFICATE® EXAMINATION BIOLOGY Paper 01 – General Proficiency 1 hour 15 minutes READ THE FOLLOWING INSTRUCTIONS CAREFULLY. 1.
This test consists of 60 items. You will have 1 hour and 15 minutes to answer them.
2.
In addition to this test booklet, you should have an answer sheet.
3.
Each item in this test has four suggested answers lettered (A), (B), (C), (D). Read each item you are about to answer and decide which choice is best.
4.
On your answer sheet, find the number which corresponds to your item and shade the space having the same letter as the answer you have chosen. Look at the sample item below. Sample Item Which of the following diseases is due to a dietary deficiency?
Sample Answer
(A) (B) (C) (D)
A
Malaria Diabetes Influenza Anaemia
B C
D
The best answer to this item is “Anaemia,” so answer space (D) has been shaded. 5.
If you want to change your answer, erase it completely before you fill in your new choice.
6.
When you are told to begin, turn the page and work as quickly and as carefully as you can. If you cannot answer an item, go on to the next one. You may return to this item later. Your score will be the total number of correct answers.
7.
Figures are not necessarily drawn to scale.
DO NOT TURN THIS PAGE UNTIL YOU ARE TOLD TO DO SO. Copyright © 2012 Caribbean Examinations Council All rights reserved. 01207010/SPEC 2015
-2Items 1–2 refer to the following diagrams labelled I, II, III, IV and V found in a school garden.
I
1.
III
IV
V
Which of the following characteristics could be used to classify these organisms into two groups? (A) (B) (C) (D)
2.
II
Number of wings Segmented body Number of legs Antennae
The distribution of the organism labelled I could be studied using (A) (B) (C) (D)
quadrats sieves line transects nets
Item 3 refers to the following food web from a tropical forest.
Snake Bird
Caterpillar Ocelot Beetle Iguana
Squirrel
Larva
Butterfly
Parasitic Vine
Tree
3.
The list of herbivores in the food web includes (A) (B) (C) (D)
iguana, parasitic vine, larva, butterfly iguana, beetle, larva, butterfly iguana, caterpillar, larva, bird iguana, squirrel, snake, bird
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-3Item 4 refers to following relationships between some organisms. I II. III 4.
Barnacles on a shark’s back Shark/man Man/malaria protozoan
Which of the following correctly identifies these relationships? I (A) (B) (C) (D)
5.
III
Predator/prey Predator/prey Commensalism Mutualism
Mutualism Parasitism Mutualism Parasitism
Which of the following statements about a food chain is true? (A) (B) (C) (D)
6.
Commensalism Commensalism Predator/prey Predator/prey
II
Energy from the sun is transferred from one organism to subsequent organisms. Each of its members depends on heat energy obtained directly from the sun. Energy changes from heat to light to chemical. The sun traps light energy at the start of the food chain.
For which of the following would plants NOT compete? (A) (B) (C) (D)
Space Light Food Water
Items 7–8 refer to the following diagram which represents an animal cell seen under an electron microscope. Some cell structures are labelled (A), (B), (C) and (D).
(A) (B) (C) (D)
In answering items 7–8, each option may be used once, more than once or not at all. Which of the structures 7.
is responsible for energy production?
8.
consists mainly of water? GO ON TO THE NEXT PAGE
01238010/SPEC 2015
-49.
Which of the following pairs of phrases does NOT distinguish between plant and animal cells?
Plant Cells Have chloroplasts Contain large vacuoles Have no cell membranes Contain cellulose cell walls
(A) (B) (C) (D)
Animal Cells Do not have chloroplasts Have few vacuoles Have cell membranes Do not have cellulose cell walls
Items 10–11 refer to the following graph which shows the activity of two enzymes in the human digestive system.
Enzyme activity
Enzyme II Enzyme 1
1
10.
3
4
5
6
7
8
9
10
pH
Enzyme I will function BEST in the (A) (B) (C) (D)
11.
2
mouth stomach small intestine large intestine
Which of the following is MOST likely Enzyme II? (A) (B) (C) (D)
Pepsin Renin Trypsin Amylase
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-5Items 12–13 refer to the following diagram which represents a metabolic process carried out in plants.
Light ter Wa
Ca rbo nd
iox ide
Chlorophyll in chloroplasts
Plant cell
Oxygen
Food 12.
The oxygen shown in the diagram comes from the (A) (B) (C) (D)
13.
atmosphere chlorophyll carbon dioxide water
To which of the following groups does the food produced belong? (A) (B) (C) (D)
Sugars Proteins Starches Fats
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-6Items 14–15 refer to the following diagrams, X and Y, which illustrate an experiment on a metabolic process taking place in light.
Bell jar Plastic bag
X 14.
Iron Vitamin C Vitamin D Calcium
Which of the following organs involved in digestion produces NO digestive enzymes? (A) (B) (C) (D)
18.
reduce the quantity of sugar produced during photosynthesis allow the plant to get its store of carbon dioxide ensure that any starch produced is removed from the leaves stop further reduction of carbon dioxide to carbohydrate
Which of the following is important in a diet to develop strong bones and teeth? (A) (B) (C) (D)
17.
the effect of potassium hydroxide on the growth of plants the effect of water on the growth of plants if carbon dioxide is necessary for photosynthesis if oxygen is necessary for photosynthesis
Before the experiment is set up, the plants are placed in a dark cupboard for about twenty-four hours. This step is necessary to (A) (B) (C) (D)
16.
Y
Potassium hydroxide
The aim of the experiment is to investigate (A) (B) (C) (D)
15.
Distilled water
Stomach Pancreas Liver Ileum
The products of aerobic respiration are (A) (B) (C) (D)
carbon dioxide and water carbon dioxide and lactic acid carbon dioxide and alcohol carbon dioxide only
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-719.
After vigorous exercise, the muscles involved show a marked increase in the concentration of (A) (B) (C) (D)
glucose glycogen lactic acid citric acid
Items 20–22 refer to the following diagrams of a model showing how breathing takes place.
Glass tube Rubber bung
Balloon Housing
Plunger
20.
The part of the model which represents the diaphragm is the (A) (B) (C) (D)
21.
Which of the following would MOST likely occur when the plunger is moved in the direction of the arrow shown in the diagram above? (A) (B) (C) (D)
22.
rubber bung plunger balloon housing
The balloon will expand. A vacuum will be created. The volume of the apparatus would decrease. The pressure within the housing will increase.
When the plunger is moved, the balloon functions like the (A) (B) (C) (D)
alveolus bronchus diaphragm trachea GO ON TO THE NEXT PAGE
01238010/SPEC 2015
-823.
The following are descriptions of blood vessels. I. II. III.
Thin wall, large lumen, takes blood away from organs and tissues Thin-walled vessel adapted for diffusion; close to cells Thick wall, small lumen, takes blood to organs and tissues
Which of the following correctly identifies the blood vessels described above?
24.
I
II
III
(A)
Artery
Vein
Capillary
(B)
Vein
Capillary
Artery
(C)
Capillary
Vein
Artery
(D)
Artery
Capillary
Vein
The function of valves in veins is to (A) (B) (C) (D)
25.
When a person receives a vaccine, his/her immune system is stimulated to produce (A) (B) (C) (D)
26.
antigens antibiotics antibodies antitoxins
On what type of day is the rate of transpiration likely to be LOWEST? (A) (B) (C) (D)
27.
lower the pressure of blood increase the pressure of blood prevent the back flow of blood push blood forward
Cool and sunny Cloudy and windy Hot and windy Cloudy and cool
In the kidney, blood vessels absorb most water from the (A) (B) (C) (D)
first (proximal) convoluted tubule loop of Henlé second (distal) convoluted tubule collecting duct
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-9Items 28–29 refer to the following section through a kidney, with parts labelled (A), (B), (C) and (D).
(A) (B) (C)
(D)
Match each of the items below with one of the parts labelled above. Each part may be used once, more than once or not at all. 28.
Site of urine collection
29.
Site of osmoregulation Item 30 refers to the following diagram which represents a seedling growing in the dark.
30.
The plumule of the seedling is showing a (A) (B) (C) (D)
negative response to gravity negative response to light positive response to gravity positive response to light
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- 10 Item 31 refers to the following diagram which shows the skeleton of a human arm.
Y
X
31.
During performance of vigorous exercise, Bone X slips out of the socket in Bone Y. Besides experiencing pain, the individual would MOST likely be UNABLE to (A) (B) (C) (D)
32.
flex the arm straighten the arm swing the arm pick up a pencil
Which part of the body do drugs affect MOST? (A) (B) (C) (D)
Stomach Brain Blood vessels Lungs
Item 33 refers to the following diagram of a reflex arc, with parts labelled (A), (B), (C) and (D). (A)
(B) Grey matter White matter
(C) Spinal cord (D)
33.
Which part of the reflex arc takes messages to the central nervous system?
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- 11 34.
Which of the following sequences is the correct pathway of a reflex action? (A) (B) (C) (D)
35.
The central nervous system consists of (A) (B) (C) (D)
36.
5 11 14 28
When one side of the stem of a plant is illuminated the plant grows (A) (B) (C) (D)
40.
Arterioles, sweat glands, hair erector muscles Epidermis, dermis, hypodermis Sebaceous gland, hair follicle, pain receptor Adipose tissue, sweat pores and hair
During the menstrual cycle, the egg is MOST likely to be released on Day (A) (B) (C) (D)
39.
They are addictive. All are legally available to citizens. They alter normal bodily functions. They may cause liver damage and heart disease.
Which of the following structures are involved in the regulation of body temperature in humans? (A) (B) (C) (D)
38.
the brain and the spinal cord the cerebrum, cerebellum and hypothalamus sensory, motor and relay neurones sight, smell, taste, hearing, touch
Which of the following is NOT true about drugs? (A) (B) (C) (D)
37.
Receptor →Stimulus → Effector →Response Stimulus → Receptor →Effector → Response Effector → Stimulus → Receptor → Response Response → Stimulus → Effector →Receptor
thin and spindly away from the light towards the light and becomes etiolated
Which of the following is associated with germination? (A) (B) (C) (D)
Increased water content Increased food store Decreased metabolic activity Decreased water content GO ON TO THE NEXT PAGE
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- 12 41.
Which of the following is NOT used to measure growth in plants? (A) (B) (C) (D)
42.
A seed develops from the (A) (B) (C) (D)
43.
testes epididymis urethra ureter
Fertilization of the ovum takes place in the (A) (B) (C) (D)
47.
a single cell divides by meiosis only half the chromosomes are involved all the chromosomes are from one parent all cell divisions are by mitosis
After leaving the vas deferens, spermatozoa enter the (A) (B) (C) (D)
46.
Mitosis An aquatic habitat Optimal environmental conditions Production of gametes
Asexual reproduction gives rise to genetically identical offspring because (A) (B) (C) (D)
45.
ovary embryo ovule pollen grain
Which of the following is a requirement for sexual reproduction? (A) (B) (C) (D)
44.
Total volume of all the organs Total number of leaves on the plant Changes in the fresh mass of all the organs Changes in the dry mass of all the organs
vagina uterus oviduct ovary
Which of the following is considered a male hormone? (A) (B) (C) (D)
Oestrogen Progesterone Testosterone Follicle-stimulating hormone
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- 13 48.
Which of the following means of birth control is MOST effective in preventing sexually transmitted infections? (A) (B) (C) (D)
49.
Animals assist with (A) (B) (C) (D)
50.
Foot size Height Intelligence Presence or absence of horns
Genetic variation is important because it (A) (B) (C) (D)
53.
genotype monotype phenotype prototype
Which of the following is an example of a discontinuous trait? (A) (B) (C) (D)
52.
pollination and seed dispersal pollination only seed dispersal only asexual reproduction in plants
The observable physical/biochemical characteristics or traits of an organism are referred to as its (A) (B) (C) (D)
51.
A condom The pill A diaphragm A spermicide
provides a basis for natural selection allows for survival against disease provides antibiotic resistance forms the basis for vaccines
Which of the following isolation mechanisms could lead to speciation (splitting into two different species)? I. II. III.
Geographical Behavioral Ecological
(A) (B) (C) (D)
I only II only II and III only I, II and III
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- 14 54.
Which of the following terms BEST describes two or more forms of the same gene? (A) (B) (C) (D)
55.
Which of the following processes does NOT form part of meiosis? (A) (B) (C) (D)
56.
57.
Females
Males
(A)
XX
XXX
(B)
XO
XY
(C)
XX
XY
(D)
XX
Y
Which of the following BEST describes the process of evolution? Development of characteristics in response to need Change of populations through time Development of populations due to natural selection Change from simple to complex organisms
Biological evolution is BEST defined as the (A) (B) (C) (D)
59.
Recombination Segregation Independent assortment Dependent assortment
Which of the following describes the sex chromosomes in humans?
(A) (B) (C) (D)
58.
Alleles Diploid Chromatids Chromosomes
changes in species towards greater complexity over time changes in gene frequencies in a population over time ability of individuals to survive and produce offspring ability of individuals to respond to natural selection
Which of the following provide supporting evidence for biological evolution? I. II. III. (A) (B) (C) (D)
Fossil record DNA/genetic material Vestigial traits (appendix, wisdom teeth) I and II only I and III only II and III only I, II and III
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- 15 60.
Which of the following is the first step in the production of insulin using recombinant DNA? (A) (B) (C) (D)
Plasmid removed from E. coli. DNA coding for human insulin inserted in the plasmid. Plasmid closed by a special enzyme. Plasmid opened by a special enzyme.
END OF TEST
IF YOU FINISH BEFORE TIME IS CALLED, CHECK YOUR WORK ON THIS TEST.
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- 16 -
CSEC BIOLOGY Specimen - Paper 01 2015 QUESTION NUMBER 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
KEY A D B B A C D B C B C D A C C D C A C B A A B C C D B C B A
SYLLABUS OBJECTIVE A1.1 A2.1 A3.3 A3.7 A4.1 A7.1 B1.3 B1.3 B1.4 B2.8 B2.9 B2.2 B2.2 B2.4 B2.4 B2.11 B2.7 B3.1 B3.2 B3.3 B3.3 B3.3 B4.3 B4.3 B4.6 B4.9 B5.4 B5.4 B5.4 B6.1
QUESTION NUMBER 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60
KEY C B B B A B A C C A A C D D C C C A A C D A D A D C B B D A
SYLLABUS OBJECTIVE B6.4 B7.8 B7.6 B7.6 B7.5 B7.8 B7.11 B9.3 B7.2 B8.3 B8.1 B8.2 C9.1 C9.1 B9.2 B9.2 B9.2, 9.3 B9.5 B9.9 C4.7 C2.2 C2.1 C1.2 C3.1 C4.4 C4.10 C5.1 C5.4 C6.1 C7.1
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