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The diagram shows some of the processes carried out by living organisms.
Which two characteristics of living organisms are represented by arrows X and Y?
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According to the binomial system, how should a human be named?
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Which is a feature of cells used to place organisms in the plant kingdom?
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The photomicrograph shows a cell from a type of aquatic plant.
Which parts labelled on the photomicrograph indicate that this is a plant cell?
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Which cell is adapted for absorption?
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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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What are features of osmosis?
[Table_1]
key
✓ = yes
x = no
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The diagram shows apparatus which can be used to demonstrate osmosis. After one hour, what would happen to the liquid levels in the glass tubes?
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Which substances are made by linking together glucose molecules only?
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The graph shows the effect of pH on the rate of reaction of an enzyme.
What does the graph show?
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The diagram shows a cell with groups of bacteria around its edge.
The bacteria move to areas of high oxygen concentration.
Which process in the cell causes the bacteria to form these groups?
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The diagram shows part of a leaf.
What is layer X?
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Which stage of nutrition takes place when food molecules become part of a body cell?
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The diagram shows part of the alimentary canal and associated organs.
Which labelled part stores bile?
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Which human teeth are used for biting and cutting food?
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In which order does water pass through these structures in a plant?
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A decrease in which factor normally causes the transpiration rate to increase?
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In a mammal, what ensures the blood flows one-way round the circulatory system?
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Which structure separates the right and left sides of the heart?
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Lyme disease is a disease which can be transmitted to humans in the following way:
a mouse carries the bacteria Borrelia burgdorferi in its blood
↓
a tick bites the mouse and the bacteria are transferred into the tick
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the tick bites a human and bacteria are transferred to the human
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the human becomes infected with Lyme disease
What is the pathogen in this process?
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The diagram shows some of the structures in a human lung.
Where is the carbon dioxide concentration highest?
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What is produced by anaerobic respiration in yeast?
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The amount of urea in the blood increases as it passes through organ X. What is organ X?
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Sensory neurones conduct impulses from
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What is a function of the cornea?
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Which responses are shown by the root of a plant?
[Table_1]
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The diagram shows half a flower.
Which row identifies the parts of the flower?
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The diagram shows the human male reproductive system. What are structures P, Q and R?
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Which method of birth control would also help to protect against HIV?
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Which word describes nuclear division to produce genetically identical cells?
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The diagram shows a family tree. Some individuals have inherited a genetic condition. [Image_1: Diagram of family tree]
Which statement about the grandparents is correct?
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What is a definition of variation?
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Which pyramid of numbers has more tertiary consumers than producers?
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The diagram represents part of the carbon cycle.
Which processes are represented by X, Y and Z?
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The diagram shows part of a food web. What is most likely to decrease the size of the frog population?
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Genes can be inserted into crop plants to make them resistant to herbicides.
Which process is this an example of?
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Lichens are organisms that do not grow well in polluted air.
Which graph shows the change in the number of lichen species from the centre of a polluted city to the unpolluted countryside 15 km away?
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Three human activities are listed:
1. burning fossil fuels
2. deforestation
3. replanting forests
Which activities can cause the change shown in the graph?
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