CSEC Integrated Science Paper 1 May/June 2003 - Free CXC Past Paper with Answers

Which of the labelled parts of the flower has a similar function to the testes in humans?

The structure labelled I is the

Which of the following areas are MOST likely to be affected if human populations of countries are NOT controlled? I. Recreational activities II. Land availability III. Food production IV. Environmental conditions

Items 4-5 refer to the following diagram which represents the carbon cycle. Certain processes occur at EACH of the points, (A), (B), (C) and (D).

When you are answering the items in this group, a particular choice may be made more than once, once or not at all.

In which process are carbohydrates produced?

Atmospheric carbon dioxide

Which process contributes to global warming?

Atmospheric carbon dioxide

Which of the following equations BEST represents the process of photosynthesis?

12CO₂ + 11H₂O $\xrightarrow{energy}$ C₆H₁₂O₆ + 12O₂

2O₂ + 3H₂O $\xrightarrow{energy}$ C₂H₅OH + 3O₂

CO₂ + 2H₂O $\xrightarrow{energy}$ C + 2O₂ + 2H₂

6CO₂ + 6H₂O $\xrightarrow{energy}$ C₆H₁₂O₆ + 6O₂

Which of the following processes BEST represents how water is taken up by the vacuole of a root hair?

Which of the following is a function of the white blood cells?

Transporting of oxygen

Transporting of carbon dioxide

Production of antibodies

Which of the following structures protects the heart?

Which of the following structures functions as a digestive organ and also produces a hormone?

Mr Jones is near-sighted. To correct his vision he should use

a pair of binoculars

spectacles with concave lenses

spectacles with convex lenses

Which of the following problems is MOST likely to develop in a sunbather, with unprotected eyes, if he faces the sun for a long time?

Change in colour of the iris

Damage to the retina

Drying out the aqueous humour

Liquids and gases normally expand when heated and contract when cooled. This behaviour explains the working of a

Item 14 refers to the following processes involved in heat transfer.

Which process is the method by which the sun heats the Earth's atmosphere?

Items 15-16 refer to the processes named below.

During which process does water pass from the ocean to the atmosphere?

During which process does water return to the land from the atmosphere?

Which of the following substances or sources of energy is NOT necessary to start a fire?

Which of the following pH values are associated with acidic soil types?

I. 5 II. 6 III. 9

Which of the following circuit diagrams shows three resistors in series with a power source?

The pitch of a note may NOT be altered by changing the

colour of the vibrating body

density of the vibrating body

length of the vibrating body

tension of the vibrating body

In the Caribbean, the energy used in the production of electricity is derived MAINLY from

By which of the labelled structures in the diagram of the eye below, are impulses carried to the brain?

The diagram below shows an athletic track with parts labelled (A), (B), (C), (D).

A race was held along the track above. The wind was blowing in the direction of E.

Along which part of the track will the athletes move MOST slowly?

Which of the following devices is NOT a water safety device?

The handle of a cricket bat is usually elastic. This property

enables the batsman to apply large forces

makes the bat sturdy

absorbs more shock if the batsman gets hit on his fingers

reduces the shock to the batsman's hands

A land breeze is caused by

cool air rising and hot air taking its place

hot air rising and cool air taking its place

hot air falling and cool air taking its place

cool air rising with the hot air

Which of the following statements about friction is NOT true?

It causes surfaces in contact to wear away

It can be reduced by oiling the surfaces

It causes the surfaces in contact to get hot

It is greatest between smooth surfaces.

Various lengths of wood cut from the same beam are stood in turn on a plane which is then inclined at a fixed angle. Which system is the LEAST stable?

Which of the following weather systems is NOT a cyclonic storm?

During an earthquake, the sea withdrew for several kilometres along the coast and returned as immense waves. What kind of waves are these?

A very high blood-sugar level may result from

malfunctioning of the pancreas

eating a meal containing a large amount of sugar

defect of the gonads

too much protein in the diet

Which ONE of the following arrangements of the metals aluminium, copper, iron and zinc is in DECREASING order of chemical activity?

Aluminium, copper, iron, zinc

Copper, iron, zinc, aluminium

Aluminium, zinc, iron, copper

Copper, zinc, iron, aluminium

One characteristic of an acid is that it

has a pH greater than seven

seldom conducts electricity in solution

reacts with carbonates to produce hydrogen and salt

Carbon monoxide has an affinity for the haemoglobin in the

Jane made a chicken and potato salad at 6.00 a.m. After a long hike, she ate the salad and fell ill. The reason for her illness could be that

the chicken in the salad had soured

the potato in the salad had soured

there was a build up of bacterial action in the salad

there was a build up of fungal growth in the salad

Which of the following structures helps our sense of balance?

Semi-circular canals

If the load on a machine is 25 N and the effort is 30 N, the mechanical advantage is

In order to determine which type of soil, (A), (B), (C), or (D), retained the most water, Kim carried out an experiment using apparatus shown below.

Which of the soils retained the MOST water?

Which of the following word equations represents the chemical reaction which occurs during respiration?

Glucose + Carbon dioxide $\rightarrow$ Energy + oxygen + water

Glucose + oxygen $\rightarrow$ Energy + Carbon dioxide + water

Carbohydrates + glucose $\rightarrow$ Energy + Carbon dioxide + water

Carbon dioxide + oxygen $\rightarrow$ Energy + carbohydrates + water

A ship is made of iron and is to be used in the sea. Which of the following metals is MOST suitable as a coat to prevent if from rusting?

The following are physiological processes which can take place in the body. I. Production of Vitamin D II. Sweating III. Sunburn IV. Tanning of the skin

Which of the above may result from long exposure to the sun?

Physical exercise is NOT important in the prevention of

Adding common salt to water produces a liquid that is, when compared with water,

less in chemical reactivity

less in electrical conductivity

The force which acts on all bodies in water causing them to appear to have less weight is called

Windows made from iron will rust quickly by the seaside. This is because the air by the seaside has a high percentage of

Which combination of the following coloured beams of light would yield white light where the beams overlap? I. Green II. Red III. Blue

Which of the following is NOT a conductor of electricity?

Which feature affects the loudness of the sound from a guitar string?

Which TWO of the diagrams below show how a beam of light is reflected from the surface of a plane mirror?

Two sounds of different pitch must differ in

Energy from food is chemical energy. What is the BEST sequence of energy changes involved when a man is cutting canes?

Sound $\to$ kinetic $\to$ chemical

Chemical $\to$ kinetic $\to$ sound

Kinetic $\to$ chemical $\to$ sound

Chemical $\to$ sound $\to$ kinetic

Which of the following forms of energy does a swinging pendulum bob have? I. Kinetic Energy II. Potential Energy III. Radiant Energy

The following conditions exist in space. I. Reduced gravity II. No atmosphere III. Radiation IV. Extremes of temperature Which of these conditions are overcome by an astronaut's spacesuit?

Which of the following statements BEST explains how the forward motion of a jet aircraft is caused?

The reaction force of hot gases blown out at the back of the engine

The high temperature of its engines

The high rate of rotation of its engines

The rapid rate of energy conversion by its engines

Parallel rays of light emerge as parallel rays after hitting a

What is the pH of gastric juice produced in the stomach?

Which of the following is a result of transpiration only?

The formation of water droplets on the edge of a leaf

The uptake of water by root hairs

The wilting of a plant during hot weather

The stiffening of leaves during rain

If dust from a chalkboard were mixed with water, the result would be the formation of a

In man, MOST absorption of digested food takes place in the

A raw material used to produce electrical energy in a nuclear reactor is

CSEC Integrated Science Paper 1 May/June 2003 - Free CXC Past Paper with Answers

CSEC Integrated Science Paper 1 May/June 2003 Questions