Unit 3 BIOL 1406 LAB review

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5 Terms

1
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Define hypothesis

A tentative answer to a well-framed question in the form of a statement based on previous data. Must be testable and falsifiable

2
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Describe what effect caffeine and alcohol commonly have on the nervous system

Caffeine increases heart rate whereas alcohol decreases

3
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Identify Daphnia eye, antennae, and heart

  1. Eye: most obvious structure

  2. Antenna: protrude from the head. used for locomotion and to sense the environment

  3. Heart: upper portion of its body behind its digestive tract. It is a clear structure beating rapidly.

4
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Identify IV and DV in the Daphnia experiment

The IV was the ethanol and the DV was the heart rate

5
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Calculate avg heart beats per 15 sec, avg heart beats per min, and 10% change in heart rate.

  1. Avg hb for 15 secs is adding all number and dividing the amount of numbers.

  2. Avg hb per min is multiplying by 4

  3. 10% change in heart rate is x by 0.1