Cambridge IGCSE Biology - 0610 - Supplement Paper 2 2009 Summer Zone 1

Which process removes the waste products of metabolism from the body?
A. excretion
B. nutrition
C. reproduction
D. respiration

According to the binomial system, how should a human be named?
A \, \textit{Homo Sapiens}
B \, \textit{Homo sapiens}
C \, \textit{homo Sapiens}
D \, \textit{homo sapiens}

Which leaf comes from a monocotyledonous plant?
[Image_1: A, B, C, D are images of different leaf types]

The diagram shows a palisade cell from a leaf.

Which labelled structure produces oxygen?

Which structure contains genes?
A. the cell membrane of an animal cell
B. the cytoplasm of an animal cell
C. the nucleus of a plant cell
D. the vacuole of a plant cell

The diagram shows a cross section through two guard cells of a leaf.
Which labelled structures would also be found in an animal cell?
A W and X
B X and Y
C Y and Z
D Z and W

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?
A absorbing oxygen
B killing micro-organisms
C moving mucus
D trapping bacteria

Which structures contain a cell nucleus?

[Table:
| | red blood cell | root hair cell | xylem vessel |
|--------|----------------|----------------|--------------|
| A | ✓ | ✓ | ✓ |
| B | ✓ | ✗ | ✗ |
| C | ✗ | ✓ | ✗ |
| D | ✗ | ✗ | ✓ |

Key:
✓ = contains nucleus
✗ = no nucleus]

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?
A. pH 2
B. pH 7
C. pH 9
D. pH 12

The diagram shows part of a starch molecule.

Which diagram shows this molecule after it has been completely digested?
A
B
C
D

Which cell type contains the most chloroplasts?
A. palisade mesophyll
B. phloem
C. spongy mesophyll
D. xylem

Four foods were tested for

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

Make a table to summarise the results. 

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?

A plant X, upper surface
B plant X, lower surface
C plant Y, upper surface
D plant Y, lower surface

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?
A. amino acid
B. fat
C. sucrose
D. water

The diagram shows the human heart.
Which two chambers contract at the same time?
A W and X B W and Z C X and Z D X and Y

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

| | animals | yeast |
|---|---------------------------------|------------------------------|
| A | alcohol | alcohol and lactic acid |
| B | alcohol and carbon dioxide | alcohol |
| C | lactic acid | alcohol and carbon dioxide |
| D | lactic acid and water | lactic acid |

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?
[Table_1]
\(\begin{array}{cc} \text{X} & \text{Y} \\ \hline \text{A} & \text{lungs} & \text{air} \\ \text{B} & \text{lungs} & \text{body cells} \\ \text{C} & \text{body cells} & \text{air} \\ \text{D} & \text{body cells} & \text{lungs} \\ \end{array}\)

The diagram shows a kidney and its blood vessels.
In a healthy person, which structures transport glucose?
A artery only
B artery and ureter
C artery and vein
D ureter and vein

What is true for a runner, at the end of a marathon race, in a hot climate?
A. sweating and vasoconstriction
B. sweating and vasodilation
C. vasoconstriction only
D. vasodilation only

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?
A amino acids
B carbon dioxide
C glucose
D oxygen

Fruits can be dispersed by animals or by wind. The table contains descriptions of four fruits.

Which fruit will be dispersed by wind?

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?
A 3
B 7
C 12
D 15

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?
A 1 and 3
B 1 and 5
C 2 and 4
D 3 and 4

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?
A PP × Pp
B PP × pp
C Pp × Pp
D pp × Pp

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

[Table_1]

What is a mutation?
A a change in a gene or chromosome
B a condition caused by a recessive allele
C a process used in genetic engineering
D a type of discontinuous variation

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?
[Table_1]
+ = increase in numbers
− = decrease in numbers

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. [Image_1: Diagram of carbon cycle]
What is process X?
A combustion
B decay
C excretion
D photosynthesis

The diagram shows the release of a substance into the atmosphere from different sources.
What is this substance?
A carbon dioxide
B oxygen
C urea
D water vapour

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?
A. More habitats are produced for animals and plants.
B. More transpiration may increase rainfall.
C. Rainwater runs off the land causing flooding.
D. Soil erosion is less likely.

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?
[Image_1: Diagram with farm positions and nitrate concentrations]

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?
A. 1 → 2 → 4 → 3
B. 1 → 4 → 3 → 2
C. 2 → 1 → 4 → 3
D. 4 → 2 → 1 → 3