Cambridge IGCSE Biology - 0610 - Core Paper 1 2012 Winter Zone 1

The diagram shows an amoeba, a single-celled living organism.
The movement of gases at X indicates the occurrence of which process or processes in the cell?

Which are characteristics of insects? [Table_1]

A student observed a vertebrate swimming in a pond. The animal's surface was smooth and hairless. It used its four legs to swim. At intervals, the animal came to the surface to take mouthfuls of air. To which vertebrate class does this animal belong?

The diagram shows a motor (effector) neurone.
Which structure is also found in white blood cells, but not in red blood cells?

Which structures are found in a liver cell? [Table_1]

The picture shows an animal.
What is the name of this animal according to the binomial system?

At what level of organisation is a leaf?

The diagram shows a cross-section through a plant stem.

Q shows the part that is stained red when the stem is placed in water containing a red dye.
What is found at Q?

Osmosis is defined as the diffusion of water molecules

The diagram shows part of a section through a leaf. Which arrow shows the direction of movement of water by osmosis in a leaf?

The graph shows the effect of pH on the rate of reaction of three different enzymes.
What does the graph show?

Some plants digest insects and use the nutrients for growth. What must these plants produce to digest the insects?

When solution X is tested with iodine solution, a blue-black colour is observed.
A different solution, Y, is added to a new sample of solution X and the mixture is shaken and left for 30 minutes at 40°C. When tested with iodine solution, an orange-brown colour is observed.
What are solutions X and Y?

A child decided to eat only meat, oily fish, cheese and bread, and drink only water.
Which nutrient would be in low levels in this diet?

What has not increased the world's food production in the last 100 years?

What could increase the rate of water uptake by a shoot?

What shows the sequence of organs through which urea passes as it travels from where it is produced to where it is removed from the blood?

The diagram shows how water is lost from a leaf.

By which process is the water lost?

What is produced by anaerobic respiration in a muscle?
[Table_1]

The table shows the percentage composition of three gases in atmospheric air.

$$\begin{array}{|c|c|c|} \hline \text{oxygen} & \text{carbon dioxide} & \text{nitrogen} \\ \hline 21 & 0.04 & 78 \\ \hline \end{array}$$

What is the composition of the air breathed out by a person?

$$\begin{array}{|c|c|c|} \hline \text{oxygen / \%} & \text{carbon dioxide / \%} & \text{nitrogen / \%} \\ \hline A & 5 & 73 & 20 \\ B & 16 & 4 & 78 \\ C & 21 & 0.04 & 78 \\ D & 78 & 2 & 20 \\ \hline \end{array}$$

Four test-tubes were set up as shown in the diagram and left in full sunlight. After several hours, which test-tube would contain the most dissolved carbon dioxide?

A healthy person eats a very high-protein diet. What effect will this have on their urine?

The diagram represents some human organs and their blood vessels.

Immediately after taking an alcoholic drink, how would the levels of alcohol compare in blood vessels P, Q and R?

The graph shows the rates of sweat production and urine production at different environmental temperatures.



Which statement is correct?

A man injures his arm in an accident. Afterwards, he can feel objects touching his hand, but he cannot move his hand away from them. What could cause this?

During a long race, an athlete's skin temperature rises. What causes this?

The graph shows changes in the thickness of the uterus lining of a woman.
What happens each time at X?

The table lists some processes which take place during reproduction in flowering plants and mammals.
Which row is correct?
[Table_1]

The graph shows the effect of storage time on the germination of some seeds.

What can be concluded from this graph?

A pure-breeding white mouse was crossed with a pure-breeding black mouse. All their offspring were black.
Then, one of the offspring was bred with a pure-breeding white mouse. They produced 10 baby mice.
What are the most likely colours of these mice?

How does a haploid nucleus differ from a diploid nucleus of the same species?

The diagram shows a food chain.

mahogany tree → caterpillar → small bird → owl

In this food chain, which population has the largest biomass and which has the largest population size?
[Table_1]

The diagram shows a food web near a sea shore.

Which animals have the most varied food, as shown in this food web?

In the carbon cycle, what is the simple substance absorbed by producers?

Which process forms part of both the carbon and water cycles?

There is evidence that the concentration of carbon dioxide in the Earth’s atmosphere is increasing. Which change could explain this?

The graph shows the growth of the human population of the world.
Between which years did the population grow fastest?

Which human activity can cause eutrophication of lakes?

The diagram shows the flow of energy in a food chain.

What are the forms of energy P, Q and R?

Insecticides sprayed in low concentrations may increase the yield of a crop, but may also be harmful to wildlife.
What is an explanation for this?