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10th grade human body and health

10th grade (Year 11 in England) · 14 questions · Common Core: NGSS.MS-LS1-8, NGSS.HS-LS1-3, NGSS.HS-LS1-2, NGSS.SEP 3 · England: KS4 Combined Science: Coordination and control, GCSE Combined Science: Homeostasis and response, GCSE Biology: Homeostasis and response (control of body temperature)

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1
Question 1
Why are reflexes useful?
- A. They only happen when we sleep
- B. They are slow and careful
- C. They are fast and automatic, protecting the body from harm
- D. They let us think carefully first
2
Question 2
When does this happen: hairs stand up?
- A. response when too hot
- B. response when too cold
3
Question 3
Homeostasis: which statement is NOT true?
- A. Body temperature is kept close to 37 °C.
- B. Homeostasis uses both nervous and hormonal responses.
- C. In negative feedback, a rise in a value triggers changes that lower it.
- D. Homeostasis keeps every internal condition exactly constant.
4
Question 4
Which gland releases glucagon?
- A. pituitary gland
- B. adrenal glands
- C. pancreas
- D. thyroid gland
5
Question 5
Does this describe the nervous system or the endocrine system: electrical impulses along neurones?
- A. nervous system
- B. endocrine (hormonal) system
6
Question 6
Temperature control: which statement is NOT true?
- A. Normal human body temperature is about 37 °C.
- B. The hypothalamus contains the thermoregulatory centre.
- C. Blood vessels move closer to the skin when you are hot.
- D. Vasoconstriction reduces heat loss from the skin.
7
Question 7
Which organ releases insulin?
- A. pancreas
- B. stomach
- C. liver
- D. kidney
8
Question 8
How does sweating cool you down?
- A. Evaporating sweat transfers energy away from the skin
- B. Sweat is cold when it is made
- C. Sweat blocks the Sun
- D. Sweat makes blood vessels move
Question 9
In a ruler-drop test, a student's reaction times were 0.26 s, 0.18 s, 0.21 s. What is the mean reaction time, in s? Give 2 decimal places.
Answers
10
Question 10
Coordination and control: which statement is true?
- A. Type 1 diabetes happens when the pancreas makes too little insulin.
- B. Reflex actions are controlled by conscious thought.
- C. Hormones travel along nerves.
- D. Insulin raises blood glucose.
11
Question 11
Which hormone controls the body's basal metabolic rate?
- A. adrenaline
- B. testosterone
- C. insulin
- D. thyroxine
12
Question 12
In a control system, what role do these play: light-sensitive cells in the retina?
- A. receptor
- B. coordination centre
- C. effector
13
Question 13
A room thermostat switches the heating on when the room gets cold and off when it warms up. How is this like homeostasis?
- A. It uses positive feedback to keep heating forever
- B. It has no sensor
- C. It changes the set point every minute
- D. It uses negative feedback to keep conditions near a set point
14
Question 14
Why are reflexes faster than voluntary actions?
- A. Reflexes use the digestive system
- B. Reflexes use hormones
- C. Reflex neurones are longer
- D. The signal does not need to go through the conscious part of the brain

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Answer key: 10th grade human body and health

1. C. They are fast and automatic, protecting the body from harm
2. B. response when too cold
3. D. Homeostasis keeps every internal condition exactly constant.
4. C. pancreas
5. A. nervous system
6. C. Blood vessels move closer to the skin when you are hot.
7. A. pancreas
8. A. Evaporating sweat transfers energy away from the skin
9. 0.22 s
10. A. Type 1 diabetes happens when the pancreas makes too little insulin.
11. D. thyroxine
12. A. receptor
13. D. It uses negative feedback to keep conditions near a set point
14. D. The signal does not need to go through the conscious part of the brain