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Biology 101 > Lab 7 Cellular Respiration > Flashcards

Lab 7 Cellular Respiration Flashcards

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1
Q

What are the substrates (reactants) for cellular respiration?

A

C6H12O6 + 6O2

glucose + molecular oxygen

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2
Q

What are the products of cellular respiration?

A

6H2O + 6CO2

water + carbon dioxide

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3
Q

Where do the substrates for cellular respiration come from?

A

Photosynthesis - food energy (glucose) comes from plants by taking in light energy from the sun which causes photosynthesis to occur which produces glucose.

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4
Q

What is the final electron and H+ acceptor through the process of cellular respiration?

A

O2 (oxygen gas)

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5
Q

What is the chemical equation for cellular respiration?

A

C6H12O6 + 6O2 —> 6H2O + 6CO2

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6
Q

How many ATP molecules can cellular respiration make?

A

38 ATP molecules

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7
Q

What is the main purpose of any form of respiration?

A

The reconstruction of Adenosine Triphosphate (ATP)

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8
Q

What happens when ATP loses a phosphate?

A

It becomes ADP (Adenosine Diphosphate)

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9
Q

What is the energy carrier of the cell?

A

ATP

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10
Q

What are the pathways of Aerobic Respiration (3)?

A

Glycolysis, Krebs Cycle, and Electron Transport Chain

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11
Q

Where does glycolysis in aerobic respiration occur?

A

In the cytoplasm of the cell.

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12
Q

Where does the krebs cycle in aerobic respiration occur?

A

In the matrix of the mitochondria

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13
Q

Where does the electron transport chain in aerobic respiration occur?

A

Along the cristae of the mitochondria

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14
Q

What is the method of breaking down glucose without oxygen?

A

Anaerobic Respiration

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15
Q

What are the 2 types of anaerobic respiration that occurs after glycolysis is complete and if no O2 is available?

A

Lactic Acid Fermentation and Alcohol Fermentation

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16
Q

What happens with lactic acid fermentation?

A

Pyruvate is converted to lactic acid

17
Q

What happens with alcoholic fermentation?

A

Pyruvate is converted into ethanol

18
Q

How many ATP is produced with the 2 types of anaerobic respiration?

A

net gain of 2 ATP molecules

19
Q

What molecule is being broken down to produce CO2 during fermentation?

A

Glucose

20
Q

In lab 7 (Cellular Respiration), how did the fermentation rate of glucose, sucrose, and starch compare?

A

Glucose was the fastest, sucrose was the second fastest, and starch was the slowest.

21
Q

Cellular respiration is controlled by enzymes, so if you lowered the temperature would you expect a different rate of production? Would the difference be a lower rate or increased rate?

A

Yes, lower rate.

Biology 101 (6 decks)

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