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APES1001 Block 3 > Metabolic Rate > Flashcards

Flashcards in Metabolic Rate Deck (5)
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1
Q

Why must you avoid splashing water when filling the consol jar with dechlorinated water?

A
  • May aerate water = bubbles form in jar

- volume measurements = inaccurate if water splashed out of jar

2
Q

Why did you have to ensure that there were no air bubbles under the lid of the consol jar?

A
  • air bubbles = add O2 to sample via gas diffusion -> skew results
3
Q

Why did you have to keep disturbance to a minimum?

A
  • fish in resting and undisturbed environment

- stressed environment = changes BMR = uses excess O2 = render results of experiment inaccurate

4
Q

Were you calculating BMR or SMR of the goldfish?

A

BMR - basal metabolic rate

- the fish was undergoing minimal activity which is a characteristic of BMR

5
Q

Why is it necessary to continuously swirl the solution when titrating the thiosulphate solution?

A
  • ensure entirely mixed & reacted quickly -> ensure endpoint not overshot