Cambridge IGCSE Biology - 0610 - Core Paper 1 2009 Summer Zone 1

Which process removes the waste products of metabolism from the body?

According to the binomial system, how should a human be named?

Which leaf comes from a monocotyledonous plant?

The diagram shows a palisade cell from a leaf.
Which labelled structure produces oxygen?

Which structure contains genes?

The diagram shows a cross section through two guard cells of a leaf.

Which labelled structures would also be found in an animal cell?

The diagram shows some cells from the lining of the trachea (windpipe) in the respiratory tract.
What is the function of the structures labelled X?

Which structures contain a cell nucleus? [Table_1]

Which diagram shows the appearance of a plant cell several minutes after it has been placed in a concentrated solution of sugar?

The dots represent molecules of a gas in four tubes at the beginning of an experiment.
In which tube will more molecules move from X to Y than in the opposite direction?

What is the optimum pH for stomach protease?

The diagram shows part of a starch molecule.
Which diagram shows this molecule after it has been completely digested?

Which cell type contains the most chloroplasts?

Four foods were tested for

fat (using ethanol),
protein (using the biuret test),
reducing sugar (using Benedict’s solution),
starch (using iodine solution).

Which food contains protein and starch?

[Table_1]

Cobalt chloride paper is blue when dry but turns pink when wet. Some blue cobalt chloride paper was fastened to the upper and lower surfaces of a leaf on a plant X and a leaf on plant Y.
The diagram shows the results of the experiment.

Through which leaf surface was water lost most quickly?

The diagrams show stages in the passage of water through a plant.
The circles are the starting points for arrows to show the direction in which the water moves.
Which circle must have an arrow pointing downwards only?

Translocation occurs in phloem tubes. Aphids feed on the contents of phloem tubes. What type of food would be lacking in their diet?

The diagram shows the human heart. Which two chambers contract at the same time?

Which substances are formed during anaerobic respiration in animals and yeast?
[Table_1]

In an experiment, three glass bell jars were set up as shown in the diagram.

At the end of the experiment, which bell jar has the most oxygen and which has the least?

The diagram represents the exchange of gases during breathing and during respiration in the body.

What is represented by X and by Y?

The diagram shows a kidney and its blood vessels.
In a healthy person, which structures transport glucose?

What is true for a runner, at the end of a marathon race, in a hot climate?

When a person is frightened, adrenalin is released by the adrenal glands. What are the effects of the adrenalin? [Table_1]

What crosses the placenta from fetal blood to maternal blood in larger quantities than from maternal blood to fetal blood?

Fruits can be dispersed by animals or by wind. The table contains descriptions of four fruits.
Which fruit will be dispersed by wind?
[Table: fruit - description]
A. fleshy and scented
B. light weight and has a wing
C. sticky and has hooks
D. sweet tasting and brightly coloured

The graph shows the relationship between age and weight for boys and girls. At what age does the graph show that girls are heavier than boys?

The experiment shown in the diagram was set up to see what conditions are needed for seeds to germinate. Except for tube number 5, all tubes are kept at room temperature.



In which tubes are the seeds most likely to germinate?

The diagram shows a maize (corn) cob with purple and yellow fruits. Purple (P) is dominant to yellow (p). What are the genotypes of the parent maize plants?

What is true of the chromosomes present in the daughter nuclei after meiosis and after mitosis?
[Table_1]

What is a mutation?

The diagram shows a food chain.

A disease reduced the number of consumer 2.
What effect would this be likely to have on the numbers of consumer 1 and consumer 3?

The diagram shows a food web.
Which arrow does not show the direction of energy flow?

The diagram shows a tree and organisms associated with it.
Which labelled organism is a producer?

The diagram shows a simplified carbon cycle.
What is process X?

The diagram shows the release of a substance into the atmosphere from different sources.
What is this substance?

The graph shows the change in the numbers of a species of small mammal living on an island. Which letter represents the phase where the population growth is slowing down?

What could be a consequence of deforestation?

The diagram shows the positions of four farms and the concentrations of nitrate at different points in a river. Which farm is likely to have been using too much fertilizer on its land?

Untreated sewage can cause pollution of streams and rivers. Some changes in streams and rivers after sewage is added are shown.
1. fish die
2. the dissolved oxygen in the water decreases
3. the number of anaerobic organisms increases
4. the number of bacteria increases
What gives the order in which these events occur?