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Behaviour revision

Questions

Answering questions correctly makes all the difference. Here are some model questions and answers collected from previous papers and their mark schemes. The asterisks (*) indicate what a mark was given for on the mark scheme. Those without asterisks are answers that got full marks, or are copied from books.

4.1 Sense Organs

The Eye

(Given with graph)

Describe and explain how the distribution of the rod cells and cone cells relates to variation in sensitivity and visual acuity in different parts of the retina

(BY04 June 96 Section B, 6 marks)

Describe how a rod cell converts light energy into a nerve impulse

(BY04 June 96 Section B, 3 marks)

Describe how cone cells allow us to see colours

(BY04 June 96 Section B, 3 marks)


4.2 Synapses

Describe how information is transmitted across a neuromuscular junction between the neurone and the muscle

(Byo4 Feb 96 Section B, 5 marks)

Explain one way in which drugs might affect this transmission of information

(Byo4 Feb 96 Section B, 2 marks)


4.3 Muscle

What causes the banding pattern seen in a muscle fibril?

(Byo4 Feb 97 Section B, 3 marks)

How and why will the banding pattern change when the muscle fibril contracts?

(Byo4 Feb 97 Section B, 4 marks)

Describe the mechanism which results in the muscle contracting.

(Byo4 Feb 96 Section B, 5 marks)


4.5 & 4.6 Behaviour

In the examples given in (a), (b), and (c), identify the types of behaviour described in italics. Explain the reason for your answers.

(Byo4 Feb 96 Section B, 12 marks)

(a) Flies enter the base of traps and crawl up to the undyed area at the top where they may be killed by fast-acting insecticide. (3 marks)

(b)Young toads come out of burrows when water is noisily sprinkled on soil, even if the soil is kept try by a plastic sheet (6 marks)

(c) When aphids encounter a chemical produced naturally by aphids to insecticide sprays they disperse rapidly from the lettuce heart to its outer leaves (3 marks)

Describe the main features of innate behaviour

(Byo4 Feb 97 Section B, 4 marks)

Describe the main features of imprinting

(Byo4 Feb 97 Section B, 4 marks)

Describe the main features of habituation

(BY04 June 96 Section B, 4 marks)

Explain how a rat learns to obtain a food pellet when placed in a Skinner box

(BY04 June 96 Section B, 4 marks)

With the help of an example, describe what is meant by classical conditioning

(BY04 June 96 Section B, 4 marks)


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