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The diagram illustrates some of the processes carried out by living organisms.
Which characteristic of living organisms is represented by arrow X?
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All fish, all birds and all mammals are
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The diagram shows four arthropods.
How many of these arthropods are insects?
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The diagram shows an animal. Use the key to identify the animal.
1. has two wings ........................................................... go to 2
has four wings ........................................................... go to 3
2. has antennae much shorter than legs ..................
has antennae about the same length as legs .......... B
3. has feathery antennae ............................................ C
has smooth antennae ............................................ D
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The diagram shows a plant cell.
Which features show that it is a plant cell?
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The cell shown in the diagram has been magnified 3000 times. The diagram is 21 mm wide.
What is the actual diameter of the cell?
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Xylem is an example of
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The diagram shows a cross-section through a plant root.
Q shows the part that is stained red when the root is placed in water containing a red dye.
What is found at Q?
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How do carbon dioxide and oxygen move in and out of a mesophyll cell?
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The diagram shows an experiment set up to investigate osmosis in living cells.
What happens to the volumes of water (X) and sugar solution (Y) after 12 hours?
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The diagram shows an experiment on the digestion of the protein in egg albumen by protease.
The protease was taken from a human stomach.
In which test-tube will the protein be digested most quickly?
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Which graph shows the effect of temperature between 20°C and 35°C on the activity of a human digestive enzyme?
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Which product of photosynthesis moves out of a green leaf through its stomata?
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Poor nutrition can lead to a condition called rickets in which bones fail to develop properly.
The table shows some minerals and vitamins present in four foods.
Which food would be best for a child who has rickets?
[Table_1]
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A person ate food X. Food X was not affected by enzymes until it reached the duodenum. What was in food X?
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The diagram shows a plant shoot and the same shoot six hours later. Which change in environmental conditions could cause this change in the shoot?
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Where does haemoglobin become oxyhaemoglobin?
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The diagram shows an experiment to investigate the respiration of yeast.
Which gas is evolved and which new compound is present after 24 hours?
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A girl holds her breath for 30 seconds, breathes out, and then breathes in. Compared with the air she breathes out, the air she breathes in contains less
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Why does anaerobic respiration in muscles release less energy than aerobic respiration?
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566
How does the skin react when the body becomes very warm?
[Table_1]
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Which diagram shows a sensory neurone?
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The diagram shows the muscles that control the size of the pupil in an eye.
How do the muscles make the pupil smaller?
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The diagram shows some changes which take place during a woman's menstrual cycle.
Assuming ovulation occurs on day 14, what is occurring at the time of ovulation?
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The diagram shows a process in plant reproduction.
[Image_1: Diagram of plant reproduction process with labels anther, stamen, X (arrow), stigma, and carpel]
Which process is represented by arrow X?
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In addition to a suitable temperature, what else is always necessary for seed germination?
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The graph shows how human height changes with age.
In which age range is the growth rate slowest?
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The diagram shows a plant cell. Where is most of the DNA found?
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The diagram shows the chromosomes in the nucleus of a cell that divides by mitosis.
Which diagram shows the chromosomes in the nucleus of one of the daughter cells produced?
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The diagram shows the fusion of gametes to produce a son and a daughter.
[Diagram depicting gametes and offspring]
What are the sex chromosomes in gamete Q and son R?
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Which organisms can be sources of energy for decomposers?
[Table_1]
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The diagram shows a pyramid of biomass for all organisms in an ecosystem.
Which organisms are carnivores?
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The diagram shows a food chain.
A disease reduced the numbers of consumer 3.
What would be the likely effect of this on the numbers of consumer 1 and consumer 2?
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Which process removes carbon dioxide from the atmosphere?
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In which labelled stage in the water cycle is the water in vapour form?
595
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The graph shows a growth curve for a population of yeast.
Which two phases of the growth curve are caused by factors such as predation, disease or lack of food?
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Which two gases \textbf{both} contribute to global warming?
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Lichens are organisms that do not grow well in air containing sulfur dioxide.
Which graph shows the change in number of lichen species from the centre of an industrial city to the countryside 15 km away?
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