Homeostasis and Response | AQA GCSE Combined Science Trilogy Biology, Foundation tier (8464)
Homeostasis and Response
- 101 questions
- 6 subtopics
- Biology Paper 2
- Biology Paper 2
Homeostasis and Response is examined in Biology Paper 2.
It covers homeostasis, the nervous system and the reflex arc, human endocrine system, insulin, glucagon and diabetes, hormones in human reproduction and contraception.
Sample questions from Homeostasis and Response
Answer each one closed book first, then open the answer.
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Homeostasis
Apart from enzyme action, what else does homeostasis keep at its optimum?
Show the answer
All the other functions carried out by the cells of the body. -
Homeostasis
Name the three parts that every control system contains.
Show the answer
Receptors, a coordination centre and effectors. -
The nervous system and the reflex arc
What is the job of the motor neurone in a reflex arc?
Show the answer
It carries the impulse from the central nervous system to the effector. -
The nervous system and the reflex arc
Two schools each find that a caffeinated drink shortens reaction time in the ruler-drop test. What does the agreement between their results show?
Show the answer
The result is reproducible, because different investigators using different equipment obtained similar results. -
Human endocrine system
A hormone travels all round the body, so why does it affect only certain organs?
Show the answer
Only its target organs respond to it. -
Human endocrine system
Where in the body are the adrenal glands found?
Show the answer
One sits above each kidney. -
Insulin, glucagon and diabetes
Why is a very high blood glucose concentration harmful to cells?
Show the answer
It makes the blood plasma too concentrated, so water is drawn out of the cells by osmosis and they cannot work properly. -
Insulin, glucagon and diabetes
Name two common treatments for Type 2 diabetes.
Show the answer
A carbohydrate controlled diet and a regular exercise regime.
The 6 subtopics
One subtopic is one session. Work down the list.
| Subtopic | What it covers | Questions |
|---|---|---|
| Homeostasis | What homeostasis is and why cells and enzymes need stable conditions, the control of blood glucose, body temperature and water level, nervous and hormonal responses, and the receptors, coordination centres and effectors of every control system. | 14 |
| The nervous system and the reflex arc | How the nervous system carries electrical impulses, the central nervous system and effectors, the stimulus to response pathway, sensory, relay and motor neurones and synapses in a reflex arc, why reflexes are rapid and automatic, and measuring reaction times, with anomalous results, reproducibility, range, uncertainty in a mean and significant figures. | 30 |
| Human endocrine system | What a hormone is and how it travels in the blood, hormonal against nervous effects, the pituitary as master gland, and the thyroid, adrenals, pancreas, ovaries and testes. | 14 |
| Insulin, glucagon and diabetes | How the pancreas releases insulin to move glucose into cells and store it as glycogen, why high blood glucose harms cells, the causes, signs and treatments of Type 1 and Type 2 diabetes, why insulin is injected, and reading glucose drink results. | 16 |
| Hormones in human reproduction | Puberty and secondary sex characteristics, oestrogen, testosterone and sperm production, ovulation about every 28 days, FSH and LH from the pituitary gland maturing and releasing an egg, and oestrogen and progesterone maintaining the uterus lining. | 12 |
| Contraception | Hormonal and non-hormonal contraception, including oral contraceptives, slow release progesterone by injection, implant or patch, barrier methods, intrauterine devices, spermicides, avoiding intercourse at fertile times and sterilisation, and the advantages and drawbacks of each. | 15 |
How the guide is worked
Answering a question from memory stores it far better than reading the answer again. The guide runs that as a fixed procedure on one subtopic at a time, about twenty minutes a session.
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Step 1 · Closed book
Cover the answers. Work through one subtopic and write down what you can. Leave blanks where you have nothing.
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Step 2 · Open book
Go back to the top. Read each printed answer and write it out in full, including the ones you had right.
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Step 3 · Closed book again
Same questions, same order, from memory. The gap between pass one and pass three is the session result.
Read the full method, the return schedule and the research behind it.
Nearby topics
AQA GCSE Combined Science Trilogy Biology, Foundation tier Active Recall Guide
Every topic, not just this one. 1,023 questions with their answers.