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Term 3 > Science > Flashcards

Science Flashcards

(24 cards)

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1
Q

What is anaerobic respiration?

A

Respiration without oxygen

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2
Q

What are the reactants in anaerobic respiration?

A

Glucose

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3
Q

What are the products in anaerobic respiration?

A

Lactic acid + ENERGY

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4
Q

Describe one difference between aerobic and anaerobic respiration.

A

Aerobic is with oxygen, anaerobic is without oxygen

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5
Q

Describe a situation when we might respire anaerobically.

A

Intense exercise like sprinting

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6
Q

Does anaerobic respiration only happen in humans?

A

No - It can happen in mammals, plants, and microorganisms

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7
Q

What is fermentation?

A

The process where microorganisms produce ethanol and carbon dioxide instead of lactic acid

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8
Q

What is an example of a microorganism involved in fermentation?

A

Yeast

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9
Q

What foods are produced by fermentation?

A
  • Bread
  • Cheese
  • Yogurt
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10
Q

How does yeast contribute to making bread?

A

Yeast ferments carbohydrates in the flour into ethanol and carbon dioxide, making the dough rise

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11
Q

What is the word equation for aerobic respiration?

A

Glucose + Oxygen → Carbon Dioxide + Water + ENERGY

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12
Q

In which part of the cell does aerobic respiration take place?

A

Mitochondria

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13
Q

What is the word equation for anaerobic respiration?

A

Glucose → Lactic acid + ENERGY

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14
Q

What causes cramps in muscles during anaerobic respiration?

A

Build up of lactic acid

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15
Q

What is oxygen debt?

A

The extra oxygen needed to break down lactic acid after exercise

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16
Q

What is the independent variable in an investigation of anaerobic respiration using yeast?

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A

The amount of sugar

17
Q

What is the dependent variable in an investigation of anaerobic respiration using yeast?

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A

The height of foam produced

18
Q

What is a control variable in an investigation of anaerobic respiration?

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A

Temperature of the water

19
Q

How is beer made?

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A

By fermenting barley grains

20
Q

How is wine made?

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A

By fermenting grapes

21
Q

What happens to the ethanol during the baking of bread?

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A

Ethanol evaporates

22
Q

What is one reason why your body prefers aerobic respiration?

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A

You get more energy per molecule of glucose

23
Q

During which conditions might anaerobic respiration occur in plants?

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A

When there is not enough oxygen available, such as in waterlogged soil

24
Q

What type of respiration occurs during intense exercise?

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A

Anaerobic respiration

Term 3 (3 decks)

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