Key Area 2.3 Metabolic rate Flashcards

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1
Q

What is the metabolic rate?

A

The quantity of energy consumed by an organism per unit time.

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2
Q

What are some ways that metabolic rate can be measured?

A
  1. Oxygen consumption
  2. Carbon dioxide production
  3. Energy production in the form of heat.
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3
Q

What is a respirometer?

A

A respirometer measures O2 uptake or CO2 out put of an organism over a period of time.

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4
Q

What kind of heart system does a fish have?

A

A single circulatory system.

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5
Q

How many atria and ventricles does a single circulatory system have?

A

One of each.

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6
Q

How many times does the blood pass through the heart per circuit in a single circulatory system?

A

Once.

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7
Q

In what way do fish allow oxygen to enter the blood?

A

Through the gills.

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8
Q

What kind of heart system does amphibians and reptiles have?

A

Double incomplete.

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9
Q

Why is a reptile or amphibians heart incomplete?

A

It only has one ventricle, but 2 atria.

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10
Q

What happens to the deoxygenated and oxygenated blood because there is an incomplete system?

A

It is able to mix.

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11
Q

How do amphibians diffuse oxygen?

A

Through their moist skin.

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12
Q

What kind of heart system do mammals and birds have?

A

Double complete.

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13
Q

Why is the heart of mammals and birds described as complete?

A

It has 2 atria and 2 ventricles.

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14
Q

What does the complete heart system stop?

A

Mixing off oxygenated and deoxygenated blood.

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15
Q

what heart system is the most efficient?

A

Double complete

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