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- 1. Multiple Choice
Which of these is a zeitgeber that keeps the human body clock synchronised with daytime?
Melatonin
Suprachiasmatic nucleus
Blue light
Low body temperature
- 2. Multiple Choice
Which of these is a zeitgeber that helps keep the human sleep/wake circadian rhythm synchronised with night-time?
Cold temperature
Blue light
Melatonin
Suprachiasmatic nucleus
- 3. Multiple Choice
What is the name of the hormone that causes the human circadian rhythm response by making you feel sleepy?
Adrenaline
Melatonin
Suprachiasmatic nucleus
Caffeine
- 4. Multiple Choice
What part of the human brain controls the biological clock?
Frontal lobe
Brain stem
Suprachiasmatic nucleus
- 5. Multiple Choice
The body clock is always accurate and perfectly in time with the environment.
TRUE
FALSE
- 6. Multiple Choice
Zeitgebers are external cues from the environment that synchronise the internal clock with the environment.
TRUE
FALSE
- 7. Multiple Choice
Which of these is NOT a zeitgeber for the human circadian rhythm?
Temperature
Light
Hormones
- 8. Multiple Choice
What is the length of the endogenous human rhythm?
24h perfectly accurate
23h too short
25.5 too long
- 9. Multiple Choice
What is the period of a circatidal rhythm?
24 hours
29.9 days
1 year
12.5 hours
- 10. Multiple Choice
A sandhopper increasing its rate of turning as the tide starts to go out and its left in the sun is an example of:
Positive hydrotaxis
Thermokinesis
Thermokinesis AND klinokinesis
Thermokinesis AND orthokinesis
- 11. Multiple Choice
Godwits migrating as the days get shorter is an example of:
Homing
Migrating
Migration AND a circanual rhythm
Homing AND a circanual rhythm
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