Item 14 refers to the diagram below which shows several labelled structures in the human eye.
14.
Which structure is responsible for carrying impulses to the brain?
- (A)
(A)
- (B)
(B)
- (C)
(C)
- (D)
(D)
Free CXC Integrated Science Paper 1 May/June 2013 past paper from 2013. Includes a worked answer key. Open the PDF, take a timed test, and study with AI on Caribbean AI.
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CSEC Integrated Science Paper 1 May/June 2013 - Free CXC Past Paper with Answers
Free CXC Integrated Science Paper 1 May/June 2013 past paper from 2013. Includes a worked answer key. Open the PDF, take a timed test, and study with AI on Caribbean AI.
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Which of the following is a characteristic of a gas?
It has a definite shape and volume.
It has a definite volume but no definite shape.
It has a definite shape but no definite volume.
It has no definite shape and no definite volume.
Which of the following is a method of heat transfer?
Reflection
Refraction
Conduction
Diffraction
Which of the following is a renewable source of energy?
Coal
Petroleum
Natural gas
Solar energy
Which of the following is a characteristic of a convex lens?
It is thicker at the edges than in the centre.
It is thinner at the centre than at the edges.
It is thinner at the edges than in the centre.
It is thicker at the centre than at the edges.
Which of the following is a unit of force?
Joule
Watt
Newton
Pascal
Which of the following is a characteristic of a magnetic field?
It is produced by electric charges at rest.
It is produced by moving electric charges.
It is produced by stationary magnets only.
It is produced by stationary electric charges only.
Which of the following is a characteristic of sound waves?
They are transverse waves.
They are longitudinal waves.
They can travel through a vacuum.
They travel at the speed of light.
Which of the following is a characteristic of a chemical reaction?
The total mass of reactants is always less than the total mass of products.
The total mass of reactants is always greater than the total mass of products.
The total mass of reactants is always equal to the total mass of products.
The total mass of reactants may be greater than, less than, or equal to the total mass of products.
Which of the following air pollutants combines with the haemoglobin in the red blood cells?
Carbon dioxide
Nitrogen dioxide
Sulphur dioxide
Carbon monoxide
The names of three types of blood vessels found in the human circulatory system are arteries, veins and
valves
tubules
capillaries
bronchioles
Which component of the human blood transports oxygen?
Platelet
Phagocyte
Lymphocyte
Red blood cell
The amount of water entering the tissues of the body is controlled by
egestion
nutrition
excretion
osmoregulation
Antibodies are important in the human body because they
control hormones
protect against diseases
help make red blood cells
regulate blood glucose levels
Item 14 refers to the diagram below which shows several labelled structures in the human eye.
Which structure is responsible for carrying impulses to the brain?
(A)
(B)
(C)
(D)
Which of the following hormones regulates the level of blood sugar in humans?
Insulin
Secretin
Prolactin
Adrenaline
Which of the following sequences correctly represents the order of the processes involved in the reproduction and growth of plants?
Fertilization, germination, pollination
Germination, fertilization, pollination
Pollination, fertilization, germination
Pollination, germination, fertilization
Item 17 refers to the diagrams below which display seeds under different conditions in four test tubes plugged with cotton wool.
In which test tube is germination MOST likely to take place?
I
II
III
IV
Which of the following hormones is produced in emergency situations?
Insulin
Secretin
Prolactin
Adrenaline
Which of the following methods of birth control is MOST likely to require an accurate prediction of the ovulation period?
Rhythm
Barrier
Surgical
Hormonal
The testes of the human male correspond to the anthers of flowers because they both
are separate organs
have similar shapes
produce male sex cells
have tubes leading from them
Wet clothes are MOST likely to dry quickly under conditions of
high temperature and low humidity
high temperature and high humidity
low temperature and low humidity
low temperature and high humidity
Which of the following is the method of heat transfer that occurs in fluids?
Radiation
Convection
Conduction
Evaporation
Solar energy is transferred through space by
radiation
convection
conduction
evaporation
Item 24 refers to the diagram below which shows part of a nitrogen cycle.
[Diagram of nitrogen cycle]
During which of the above processes is excretion occurring?
I
II
III
IV
Item 25 refers to the diagram below which shows a food web.
Which of the following organisms are herbivores?
Dogs
Goats
Fungi
Bacteria
Which of the following is NOT a cause of soil erosion?
Terracing of hillsides
Heavy water run-off on unprotected soil
The ploughing of lands during the rainy season
Allowing sheep to graze a pasture after the cattle are removed
Which of the following statements is MOST likely to be true?
Soil I is loam.
Soil II is sandy.
Soil III is clay.
Soil III is sandy.
The boundary formed by the meeting of two air masses is called a
zone
front
cloud mass
storm surge
Which of the following fishing methods is LEAST efficient?
Drift net
Trawl net
Long line
Hand line
The process by which water passes from the ocean to the atmosphere is
respiration
evaporation
precipitation
condensation
Which of the following processes used in the treatment of water will eliminate harmful bacteria?
Aeration
Filtration
Fluoridation
Chlorination
Which of the following is NOT a water safety device?
Life raft
Life jacket
Inflatable tube
Inflatable balloon
Which of the following gases is associated with the scuba-diving hazard known as 'bends'?
Oxygen
Nitrogen
Helium
Hydrogen
Which method of waste treatment is LEAST harmful to the environment?
Burning
Burying
Recycling
Landfill
The following conditions exist inside a pile of decomposing garbage:
I. It is moist. II. It is warm. III. There is much organic matter.
Which of the conditions above make a garbage pile suitable for the laying of housefly eggs?
I and II only
I and III only
II and III only
I, II and III
Which of the following protective wear is BEST suited for someone welding a broken iron gate?
Goggle
Helmet
Glove
Chest mask
A carbon dioxide fire extinguisher works by
cooling the fire
including oxygen
excluding oxygen
spreading out the heat
Which of the following is NOT a conductor of electricity?
Rubber
Iron
Copper
Carbon
Which of the substances listed below MUST be present for rusting to occur?
I. Oxygen II. Water III. Oil
I and II only
I and III only
II and III only
I, II and III
Plastic is usually used in electrical plugs because plastic
is fairly strong
has a low density
is a poor conductor of heat energy
is a poor conductor of electricity
Windows made from steel will rust quickly by the seaside. This is because the air by the seaside has a high concentration of
oxygen
iodine vapour
carbon dioxide
sodium chloride
Which of the following chemicals remove nail polish?
Borax
Acetone
Washing soda
Methylated spirit
Which crop preferred a neutral soil?
4.0 – 6.0
6.0 – 8.0
8.0 – 10.0
10.0 – 12.0
Which of the following substances will produce a suspension in water?
Clay
Salt
Sugar
Baking Soda
Which statements are true for soapy detergents?
I and II only
I and III only
II and III only
I, II and III
In the Caribbean, the energy used in the production of electricity is derived mainly from
waterfalls
fossil fuels
solar panels
wind turbines
The spanner above is an example of
a lever
a pulley
an inclined plane
a hydraulic press
The diagram below shows tongs with labels (A), (B), (C) and (D).
In which of the labelled positions is the effort usually applied?
(A)
(B)
(C)
(D)
Which of the above are referred to as alternative sources of energy?
I and II only
I and III only
II and III only
I, II, III and IV
Which of following formulae is used to calculate the mechanical advantage (MA) of a machine?
MA =
MA =
MA = Effort - Load
MA = Effort Load
Item 56 refers to the following picture of an athlete jumping over a hurdle.
What type of energy is the athlete using to jump over the hurdle?
Heat
Sound
Kinetic
Potential
Which of the following devices does NOT use an electromagnet?
Relay
Light bulb
Electric bell
Electric motor
There are limits to the height and mass of material which can be transported by a vehicle. The reason for this is
to ensure that the road is not damaged by the weight
that the vehicle is too weak to carry the load
that the vehicle would not be able to move fast enough
to ensure that the vehicle's centre of gravity is not raised beyond safe limits
Which of the following energy conversions takes place during the process of photosynthesis?
Heat → light
Light → kinetic
Chemical → heat
Light → chemical
Item 60 refers to the diagram below which represents the passage of air through the engine of a jet plane.
The direction in which the plane is moving is
X to Y
Y to X
P to Q
Q to P