Cambridge IGCSE Biology - 0610 - Core Paper 1 2014 Winter Zone 3

Which characteristic do all living organisms show?

What can be found in both root hair cells and xylem vessels? [Table_1]

The diagram shows an animal. Use the key to identify the animal.
1. front limbs with five fingers ....................... go to 2
front limbs with four fingers ....................... go to 3
2. skin with spots ............................................. A
skin without spots ........................................ B
3. tail with fins .................................................. C
tail without fins ............................................. D

How does oxygen move from the alveoli into the blood?

The diagram shows a liver cell.
In which way does this cell differ from a typical animal cell?

Which row shows the main tissue and organ involved in the process?
[Table 1]

Which structure is not an organ?

Which process occurs by osmosis?

Red blood cells were placed in a dilute solution.
Movement of water across the cell membrane caused a change in their appearance.
What explains this movement?
[Table_1]

What happens to most enzymes above 60°C?

The enzyme catalase, found in potato, speeds up the breakdown of hydrogen peroxide. The reaction releases a froth of oxygen bubbles. The diagram shows an experiment to find the effect of changes in pH on the rate of this reaction.

The table shows the time taken for the froth of bubbles to reach the top of the test-tube at different pH values.
[Table_1]
Which pH is nearest to the optimum (best) for this enzyme?

Which food-testing reagent shows a positive result when it turns from blue to purple?

Which two substances are needed for photosynthesis?

Some liquid is collected from the xylem in the stem of a plant. What is present in the liquid?

In which list do all three blood vessels carry oxygenated blood?

In a person with a low platelet level, which process is slower than normal?

The table shows some characteristics of four different plants. The plants are growing in the same environmental conditions. Which plant will have the highest rate of transpiration?
[Table_1]

Four metabolic reactions are shown.

1. carbon dioxide + water \( \rightarrow \) glucose + oxygen
2. glucose \( \rightarrow \) ethanol + carbon dioxide
3. glucose \( \rightarrow \) lactic acid
4. glucose + oxygen \( \rightarrow \) carbon dioxide + water

Which reactions take place in human cells to release energy?

The oxygen carrying capacity of the blood of smokers is less than that of non-smokers. Which component of cigarette smoke causes this?

Why is yeast used in bread-making?

The table shows the percentage composition of some chemicals found in blood entering the kidney of a healthy person.

[Table_1]

What is the percentage composition of the same chemicals in the urine of a healthy person?

[Table_2]

The diagram shows part of the human circulatory system.
In which vessel do the break-down products of hormones first appear?

Which target organ releases glucose into the blood-stream as a result of the action of adrenaline?

Which responses are shown by the shoot of a plant?
[Table_1]
key
+ grows towards the stimulus
– grows away from the stimulus

The diagram shows a flower in vertical section.
Which numbered parts of the flower continue to develop after fertilisation?

The diagram shows a cell dividing into two. Which process is shown in the diagram?

Some bean seeds are planted 2 cm below the surface of some soil in a tray.
Which process will not occur as the seeds start to germinate?

What may be defined as 'an increase in dry mass'?

The chart shows the inheritance of fur colour in a small mammal.
If the allele for white fur is dominant, which animal must be heterozygous for the gene controlling fur colour?

The diagram shows the chromosomes from one person.
What can be deduced about the person who has these chromosomes?

The diagram shows a plant that is producing small plantlets.
Which statement about the plantlets is correct?

Which diagram shows energy passing along a food chain?

The diagram shows a food web.

Which organisms will increase in number, if the number of snakes increases?

The diagram shows some feeding relationships in a woodland area.
Which of the labelled animals are in competition with seed-eating insects for their food?

Which process does not release water?

The diagram shows the carbon cycle. Which process produces carbon dioxide from substances made by photosynthesis millions of years ago?

Which statement about population growth is correct?

The graph shows changes in part of a lake after it has been polluted by fertilisers from a nearby farm. At which time will the oxygen concentration in the water be lowest?

The concentration of a pesticide in the tissues of the organisms in the following food chain was measured.
plants → small fish → large fish → birds of prey
Which bar on the chart represents the large fish?

Which activity will be least likely to lead to the extinction of species?