CSEC Integrated Science Paper 1 May/June 2019 - Free CXC Past Paper with Answers

The structure responsible for the transfer of characteristics from parents to offspring is found in the

Which of the following structures is responsible for energy production in an animal?

Item 3 refers to the following diagrams 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?

Which part of the flower is the site where male gametes are produced?

Items 5-6 refer to the following hormones. In answering Items 5-6, each option may be used once, more than once, or not at all.

Which hormone regulates the level of blood sugar in humans?

Which hormone is produced in emergency situations?

Which of the following processes are associated with excretion by the kidneys?

I. Evaporation II. Filtration III. Reabsorption

The release of an egg from the ovary is called

Which of the following statements concerning respiration is true?

Anaerobic respiration produces more energy than aerobic respiration.

Aerobic respiration requires carbon dioxide while anaerobic respiration requires oxygen.

Aerobic respiration requires oxygen while anaerobic respiration does not require oxygen.

Aerobic respiration produces oxygen while anaerobic respiration produces carbon dioxide.

Condoms and diaphragm caps are examples of the method of birth control known as

Which of the following components of blood protects the body by engulfing bacteria?

Which structure is responsible for carrying impulses to the brain?

The MOST effective method used in controlling pests is the

use of another organism

eradication of their breeding places

The amount of water entering the tissues of the body is controlled by

Which method of birth control is LEAST effective in preventing pregnancies?

Which of the following blood groups has no antigen?

Item 17 refers to the following diagram of the human digestive tract.

Hydrochloric acid is produced in

Sperm is stored in the

Item 19 refers to the following diagram of a simple food chain.

The herbivore in this food chain is

White light is separated into its component colours by a process of dispersion using a

Which of the following are DISADVANTAGES of using plastic bags? I. They are usually non-biodegradable. II. They may form toxic gases when burnt. III. They may collect water and breed mosquitoes when discarded.

The rusting of iron is an example of

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

Solar energy is transferred through space by

Which of the following formulae is used to calculate the mechanical advantage (MA) of a machine?

MA = $\frac{Load}{Effort}$

MA = $\frac{Effort}{Load}$

MA = Effort $\times$ Load

Item 26 refers to the following diagram of a thermometer.

The part labelled I is the

Plastic is usually used in electrical plugs because it

is a poor conductor of heat energy

is a poor conductor of electricity

The following data were obtained in an experiment investigating the soil pH in which different crops grow best. Which crop grew best in neutral soil?

The spanner is an example of

Which of the following energy conversions takes place during the process of photosynthesis?

What type of energy is the athlete using to jump over the hurdle?

Item 32 refers to the following diagram which represents an analogue meter used to measure the amount of electricity used. <image>

What is the reading on the meter?

Which of the following energy changes takes place in a power station that uses natural gas?

Chemical to electrical

The function of a fuse in a circuit is to

reduce the current in the circuit

store current in the circuit for later use

monitor the amount of kWh being used by the device

protect the components in the circuit if the current gets too large

The following diagram shows a pair of tongs with labels I, II, III and IV.

In which of the labelled positions is the effort usually applied?

Which of the following substances do NOT form a solution with water?

I. Sugar II. Flour III. Sand

Electrical wires are usually coated with plastic or rubber so that they

can be easily installed

are properly insulated

can be easily packaged

are protected from breakage

Which of the following forms a suspension in water?

Liquids and gases expand when they are heated and contract when they are cooled. These properties are used by the

Decayed organic matter in soil is called

A refrigerator has a rating of 0.45 kW. The electricity used, in kWh, by this refrigerator for one day is equal to

The type of energy contained in fossil fuels is

A substance, X, has a pH of 2. This means that X is

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 vehicle's centre of gravity is not raised beyond safe limits

that the vehicle would not be able to move fast enough

to ensure that the road is not damaged by the weight

that the vehicle is too weak to carry the load

Which of the following fishing methods is LEAST efficient for commercial purposes?

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

Earthworms found living in a compost heap are correctly classified as

Item 48 refers to the following diagrams which show an experiment to measure the rate at which water drains in clay, loam and sand.

Which of the following conclusions is MOST likely to be true?

Soil II is sandy soil.

Soil III is sandy soil.

Sea water can be made fit for drinking by the process of

Which of the following is NOT associated with the use of fossil fuels?

Item 51 refers to the following diagram which illustrates a body, P, that revolves around the sun, and another body, R, that revolves around P.

Which of the following terms BEST describes R?

Item 52 refers to the following diagram which represents the passage of air through the engine of a jet plane.

The direction in which the plane is moving is

Items 53-54 refer to the following methods of water purification. (A) Distillation (B) Filtration (C) Chlorination (D) Sedimentation In answering Items 53-54, each option may be used once, more than once or not at all.

Which method involves the settling of heavy suspended material?

Which method involves the boiling and condensing of water?

Which of the following is NOT an alternative source of energy?

The method of heat transfer through the metal rod is

The eye of the hurricane is the

centre of the hurricane

region in which the hurricane is located

path along which the hurricane is moving

region where the winds reach maximum speed

Items 58-59 refer to the following diagram of the solar system.

An electrician may use rubber gloves to hold a live electrical wire because the gloves act as

an insulator and will conduct the current

a conductor and will not allow the current to pass through

a conductor and conducts the current away from the gloves

an insulator and does not allow current to pass through

CSEC Integrated Science Paper 1 May/June 2019 - Free CXC Past Paper with Answers

CSEC Integrated Science Paper 1 May/June 2019 Questions