B3.1 Flashcards by tyrion lannister | Brainscape

Q

What does the biological clock regulate

A

Release of hormones

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Q

Daily rhythm?

A

Circadian rhythm

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Q

When does melatonin increase and what does it cause

A

Approx 10pm causes sleepiness

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Q

How does the body clock stay in sync?

A

Regular exposure to day and night

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Q

Travelling east or west can cause

A

Jet lag (circadian disrythmia)

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Q

Why do plants open during day

A

Allow insect pollination

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Q

Why do plants close at night

A

Protection from cold damp and wind

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Q

Photoperiodism

A

Response to changing day length

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Q

Enzyme used to seal genes together

A

Ligase

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