Cambridge IGCSE Biology - 0610 - Supplement Paper 2 2009 Winter Zone 2

The photograph shows some human cells under the microscope.

What are structures P and Q?
[Table_1]
| | P | Q |
|---|-----------|---------------|
| A | cytoplasm | cell membrane |
| B | cytoplasm | cell wall |
| C | nucleus | cell membrane |
| D | nucleus | cell wall |

Which cell moves dust particles out of the body?
A. ciliated
B. muscle
C. red blood
D. xylem

The diagrams show four types of tissues found in living organisms. Which tissue is involved in contraction?

Which process produces heat to maintain a person’s body temperature?
A excretion
B nutrition
C reproduction
D respiration

The diagram shows four arthropods.
Which arthropod is an insect?

Which shows an organism that has been named using the binomial system?
A. *Bacterium*
B. *Flowering plant*
C. *HIV*
D. *Homo sapiens*

What increases the rate of diffusion of oxygen into red blood cells in the lungs?
A. Air leaving the lungs is saturated with water vapour.
B. Air leaving the lungs still contains 16% oxygen.
C. Blood arriving in the lungs is saturated with oxygen.
D. Blood is taken away from the lungs as it circulates.

The diagrams show an experiment when set up and the same experiment two hours later.
What explains the movement of water and dye?
[Table_1]
| A | movement of water: diffusion | movement of dye: osmosis | |----|------------------------------|--------------------------------| | B | movement of water: osmosis | movement of dye: diffusion | | C | movement of water: osmosis | movement of dye: translocation | | D | movement of water: translocation | movement of dye: diffusion |

The diagram shows a student’s drawing of guard cells.

Which labelling line is not correct?

The diagram shows a flowering plant.
Use the key to identify the plant.

Which substances do root hairs take from the soil?
A. water and carbon dioxide
B. water and mineral ions
C. carbon dioxide and oxygen and mineral ions
D. carbon dioxide and oxygen and water

The diagram shows a plant.
What is the pathway taken by most of the water absorbed by this plant?
A. $X \to Y \to Z$
B. $W \to Y \to Z$
C. $Z \to Y \to X$
D. $Z \to Y \to W$

The diagram shows a section through a leaf.
Which cell type absorbs the most carbon dioxide during the day?

Which element is found in a molecule of chlorophyll?
A. calcium
B. iron
C. lead
D. magnesium

Which graph shows the effect of temperature on the activity of a human digestive enzyme?

What describes the aortic (semi-lunar) and bicuspid (mitral) heart valves when the left ventricle is relaxing?
[Table_1]

The diagram shows the blood circulatory system of a human.
How many times does the blood pass through the heart on its way from the kidneys to the aorta?
A one
B two
C four
D more than four

The diagram shows two experiments on the gaseous exchange in small aerobic crustaceans. Soda-lime absorbs carbon dioxide.

Which way does the liquid marker move?
[Table_1]

Which word equation represents anaerobic respiration in human muscle?
A. glucose \rightarrow carbon dioxide + ethanol (alcohol)
B. glucose \rightarrow carbon dioxide + lactic acid
C. glucose \rightarrow ethanol (alcohol)
D. glucose \rightarrow lactic acid

From the graph, when did the person begin a period of vigorous exercise after resting?

A bright light suddenly shines into a person’s eyes.
What happens?
A. The lenses become more concave.
B. The lenses become more convex.
C. The pupils become larger.
D. The pupils become smaller.

In which organ is alcohol broken down?
A. brain
B. kidney
C. liver
D. stomach

Blood passes through the kidney and some substances leave the blood as filtered liquid. From this liquid certain substances are reabsorbed back into the blood.
The table shows the percentage of four substances in the blood plasma, the filtered liquid and urine.

[Table_1]

Which substances are reabsorbed from the filtered liquid?
A. glucose and water
B. protein and glucose
C. urea and protein
D. water and urea

The diagram shows a flower in section. Where will fertilisation occur?

The diagram shows a bean seed when planted and the same seed two days later.
Which conditions are necessary for these changes to occur?
[Table_1]

The graph shows the changes in the dry masses of two similar samples of seeds from the start of germination.

What causes the change in dry mass after day 3 of the seeds germinated in the light?
A All the stored food has been used up.
B A lot of water has been absorbed.
C Photosynthesis has begun.
D The respiration rate has increased.

How does the rhythm method of family planning work?
A. A physical barrier stops sperms reaching the egg.
B. Implantation is prevented.
C. Intercourse is avoided near the time of ovulation.
D. Ovulation is prevented.

In cats, the allele for short hair is dominant to the allele for long hair.
A short-haired cat and a long-haired cat had several families of offspring (kittens). All their kittens were short-haired.
One of these kittens matured and mated with a long-haired cat.
What would be the expected phenotypes of their offspring?
A 1:1 short to long
B 3:1 short to long
C all long-haired
D all short-haired

A man who was blood group A and a woman who was blood group B had four children, each with a different blood group A, B, AB and O.
Which type of variation does this demonstrate?
A. continuous, environmental and genetic
B. continuous and genetic only
C. discontinuous, environmental and genetic
D. discontinuous and genetic only

Albinism is an inherited condition in which pigment does not develop in the skin, hair and eyes.
The albino allele is recessive.
What are the chances of albino parents having a normal child?
A 0% B 50% C 75% D 100%

Which graph shows the effect on the numbers of prey when their predators are removed?

Which arrow represents carbon dioxide from plant respiration?

The equation shows the breakdown of glucose during aerobic respiration.

glucose + oxygen \rightarrow product P + product Q

This process is a part of
A. the carbon cycle only.
B. the energy cycle only.
C. the carbon and water cycles.
D. the water cycle only.

The diagram represents a pyramid of biomass within an ecosystem.


What shows the direction of energy flow through the pyramid?
[Image_2 with labels: A, B, C, D]

The diagram shows a food chain.
A person sprays the rose-bush with pesticide.
Which organism does the person want to kill?
[Image_1: A food chain diagram with A: rose-bush, B: greenfly, C: beetle, D: small bird]

The diagram shows some food relationships in a woodland area.
Which of the labelled animals are in competition with seed-eating insects for their food?
[Image_1: Diagram showing food relationships with labels A (insects), B (birds), C (birds of prey), D (birds); arrows indicating food sources as insects, flowers (nectar), seeds, woodland plants.]

The diagram shows the flow of energy through four organisms in a food chain.
Which organism is a producer?

The graph shows the relationship between sulfur dioxide pollution and the number of lichen species found on trees.

From the graph, which statement is correct?
A As sulfur dioxide levels increase the number of lichen species decreases.
B Lichens cannot survive if any sulfur dioxide is present.
C Lichens are not affected by sulfur dioxide pollution.
D As sulfur dioxide levels increase so do numbers of lichen species.

The levels of carbon dioxide in the Earth's atmosphere have increased during the last one hundred years.
What is the most likely cause of this?
A cutting down large areas of forest
B increased production of crops
C over-use of inorganic fertilisers
D widespread use of pesticides