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BECEzone

THE WEST AFRICAN EXAMINATIONS COUNCIL GHANA

Basic Education Certificate Examination

Integrated Science 2015

OBJECTIVE TEST

Objective Test

Question 1

Brass is an alloy of

Question 2

An example of inorganic fertilizer is

Question 3

The component of the human blood which transport oxygen to all parts of the body

Question 4

The importance of fuse in an electrical circuit is to

Question 5

Which of the following step(s) is/are required in the scientific method?

Question 6

Which of the following food items produces amino acids as end-product of digestion?

Question 7

The process of increasing the strength of a signal using a transistor is known as

Question 8

The physical arrangement of soil particles into aggregate is termed

Question 9

The solvent which is most effective in washing bitumen from the hand is

Question 10

A piece of stone could be classified as an opaque material because it

Question 11

Fish swims in water with little resistance because it possesses

Question 12

Which of the following conditions promote(s) rusting of iron?

Question 13

The change in the volume of water when a piece of stone is dropped into it is equal to the

Question 14

The second stage in the life cycle of a mosquito is the

Question 15

Which of the following objects could be attracted by a magnet?

Question 16

The knowledge of soil texture is important because it

Question 17

How many atoms are present in CaCl2?

Question 18

The transfer of heat from the bottom to the top of a beaker containing water is by

Question 19

An example of chemical compound is

Question 20

The type of the human teeth used for biting food substance is

Question 21

Which of the following heavenly bodies is a star?

Question 22

Which of the following organisms is an endoparasite?

Question 23

The part of the plant where pollination occurs is the

Question 24

Which of the following substances is capable of neutralizing an acid?

Question 25

Droplet infection is the method by which

Question 26

An example of a derived quantity is

Question 27

A structure in the human reproductive system which stores sperms temporarily is the

Question 28

Which of the following statements about diffusion is/are correct?

Question 29

A farming system which requires at least three years programme is

Question 30

The component of a living cell responsible for respiration is

Question 31

Which of the following statements about a second class lever is correct?

Question 32

One advantage of soft water over hard water is that soft water

Question 33

The gas produced when glucose is oxidized during aerobic respiration is

Question 34

The systematic name for N2O is

Question 35

A husbandry practice which involves the removal of unwanted plant parts is known as

Question 36

The number of p-n junctions in a transistor is

Question 37

Fruit dispersed by wind

Question 38

Substances that burn living tissues when they come into contact with these tissues are considered

Question 39

The function of the platelets in the circulatory system of humans is to

Question 40

Energy is the

THEORY

ESSAY

This paper is in two parts: I and II. Answer Question 1 in part I and any other four question in part II

Question 1

Theory question 1 diagram
  1. The diagram below is an illustration of a cocoa pod infected by a disease. Study the diagram carefully and answer the questions that follow. Name the disease illustrated on the pod. Mention the causative organism of the disease. Describe one symptom of the disease. State one farm practice that promotes the spread of the disease. Give one practice farmers could adopt to control the disease.
  2. The diagram below is an illustration of a cuboid with faces A, B and C shown and sides a, b and c indicated.I, II, III and IV. Study the diagram carefully and answer the questions that follow. Measure and record the length of each of the sides labelled a, b and c in centimeters. Determine the area of each of the faces A and B. If the weight of the cuboid is 100N, determine the pressure exerted by the cuboid in N/cm² when it lies on α) face A; β) face B. From your results in (iii), explain how pressure exerted by a body changes with the area on which it lies.
  3. The diagram below is an illustration of three different types of teeth, labelled A, B and C in humans. Study the diagram carefully and answer the questions that follow. Name each type of teeth labelled A, B and C. State one function of the type of teeth labelled A, B and C. State two observable differences between the tooth labelled A and that labelled B. Mention two ways of ensuring proper dental care.
  4. The diagram below is an illustration of an experimental set-up used to separate water and salt from salt solution. Study the diagram carefully and answer the questions that follow. Name each of the parts labelled I, II, III and IV. Name the method of separation used. State one function of each of the parts labelled II and III. Name three physical processes that are involved in the separation of the mixture.

PART I [40 marks]

Answer all of Question 1

Questions for this section are in the printed paper.

PART II [60 marks]

Answer all of Question 1

Question 1

  1. What is technology? State two differences between science and technology.
  2. Draw potassium atom and show the distribution of electrons in its shells. [K= 19]
  3. What energy transformations take place in each of the following activities? Using a flashlight battery to produce light in a bulb. Using a microphone to address a gathering.
  4. List three components of soil.

Question 2

  1. Mention the junctions of a transistor. Draw the circuit symbol for n-p-n transistor.
  2. State one function of the following parts of the human circulatory system: Blood; Blood vessels; Heart.
  3. Classify each of the following substances as element, compound, or mixture: Air; Brass; Chlorine; Gold; Water.
  4. State three ways of caring for farm machines.

Question 3

  1. State two physical properties of water. Using litmus paper, explain why water is neutral.
  2. Give one function of each of the following nutrients in plants: Nitrogen; Potassium.
  3. State two human activities that disrupt the carbon cycle. State two effects of the disruption of the carbon cycle on the environment.
  4. What is the density of a body? A body of mass 50kg has a density of 2kg/m3. Calculate the volume of the body.

Question 4

  1. What is a vegetable crop?
  2. What is air pollution? State two human activities that lead to air pollution.
  3. List three modes of heat transfer. Name the type of medium in which each mode of heat transfer you have listed in (i) takes place.
  4. Give three reasons why proteins are important in the diet of mammals.

Question 5

  1. State one function of the following parts of the human reproductive system: Penis; Ovary; Oviduct; Testis; Uterus;
  2. What is an electrical conductor? List two substances which are insulators.
  3. State three ways of maintaining soil fertility.
  4. Write the word equation for each of the following chemical reactions: Oxygen and hydrogen; Nitrogen and hydrogen; Sodium and chlorine.