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Which part of the brain becomes more active if a person balances on one leg instead of standing on two legs? Tick (✓) one box - AQA - GCSE Biology - Question 6 - 2020 - Paper 1
Question 6
Which part of the brain becomes more active if a person balances on one leg instead of standing on two legs? Tick (✓) one box. A B C D Name the part of the brain ... show full transcript
Worked Solution & Example Answer:Which part of the brain becomes more active if a person balances on one leg instead of standing on two legs? Tick (✓) one box - AQA - GCSE Biology - Question 6 - 2020 - Paper 1
Step 1
Which part of the brain becomes more active if a person balances on one leg instead of standing on two legs?
Answer
The part of the brain that becomes more active is the cerebellum. This region is responsible for coordinating balance and motor control, which is crucial when maintaining stability on one leg.
Step 2
Step 3
Suggest how the fMRI scanner could help to find out more about the brain damage a person has.
Answer
An fMRI scanner helps identify brain damage by measuring brain activity through changes in blood flow. It can show which areas of the brain are functioning normally and which areas may be affected by damage, allowing for a better understanding of the patient's condition and guiding potential treatment options.
Step 4
Describe how the brain receives information about light entering the eye.
Answer
The process begins when light enters the eye and hits the retina, which contains photoreceptor cells (rods and cones). The rods are responsible for low-light vision, while the cones detect color. These cells convert light into electrical signals that travel through the optic nerve to the visual cortex in the brain, where the information is processed and interpreted.
Step 5
Explain how birds that could not detect UV light have evolved from birds that could detect UV light.
Answer
The evolution of birds' ability to detect UV light is linked to mutations in genes responsible for eye function. Birds that were able to see UV light likely had a survival advantage, as they could locate food sources (like fruits) and predators more effectively. Over generations, those that lacked the ability to detect UV light became less adapted to their environments and either faced extinction or evolved new traits through natural selection, potentially leading to other visual adaptations.