WJEC A-Level Biology (Wales) · WJEC A410QS
4 Variation, inheritance and options
Written & reviewed by James Millett — Biology (Imperial College London), PGCE Science (University of Cambridge).
Practice questions on Variation, inheritance and options
- A couple are told by their doctor that they are infertile. The doctor suggests they consid… (5 marks, Describe and Explain)
- Explain why studying the brain is extremely difficult for scientists trying to understand … (5 marks, Explain)
- Explain how a nerve impulse travels from a receptor to an effector during a reflex arc whe… (5 marks, Explain)
- Adrenaline is a hormone released during the 'fight-or-flight' response. Explain how adrena… (5 marks, Explain)
- Explain how the nervous system carries out a reflex arc when a person touches a sharp obje… (5 marks, Explain)
- Explain why it is difficult for scientists to research the structure and functions of the … (5 marks, Explain)
- Adrenaline is a hormone released during the 'fight-or-flight' response. Describe the role … (5 marks, Describe)
- Explain how a nerve impulse travels from a sensory neurone to a motor neurone across a syn… (5 marks, Explain)
- Explain how the body uses ADH to respond when a person becomes dehydrated after exercising… (5 marks, Explain)
- A patient is diagnosed with a condition in which their nephrons have been damaged, meaning… (5 marks, Explain)
- A patient is told by their doctor that their pituitary gland has stopped producing ADH. Ex… (5 marks, Explain)
- Nerve cells are adapted to carry electrical impulses quickly and efficiently. Describe fou… (5 marks, Describe)
- Describe how a reflex arc works when a person accidentally touches a sharp object with the… (5 marks, Describe)
- The brain is divided into distinct regions, each responsible for different functions. Expl… (5 marks, Explain)
- A patient is diagnosed with a cataract in one eye. Explain how a cataract affects vision a… (5 marks, Explain)
- Explain how a nerve impulse passes from one neurone to the next across a synapse. (5 marks, Explain)
- A person has just eaten a large meal containing a high amount of carbohydrates. Describe h… (5 marks, Describe)
- A person drinks a large amount of water on a cold day. Explain how the kidneys respond to … (5 marks, Explain)
- Explain how the nervous system carries out a reflex arc when a person touches a sharp obje… (5 marks, Explain)
- Describe the roles of insulin and glucagon in maintaining a stable blood glucose concentra… (5 marks, Describe)
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