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biology > Cellular Respiration > Flashcards

Cellular Respiration Flashcards

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0
Q

How is a calorie different from a “Calorie”?

A

A food calorie is actually a kilocalorie or 1000 calories. A good calorie is 1000x greater than a CALORIE.

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1
Q

What is a calorie?

A

The energy needed to raise the temperature of one gram of water through 1°C

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2
Q

What is the first step in breaking down glucose called?

A

Hexokinase

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3
Q

What is the equation for cellular respiration?

A

Glucose+ oxygen–> carbon dioxide+ water+ energy

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4
Q

How many net ATP are made from glycolysis?

A

2 ATP

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5
Q

How is the function of NAD+ Similar to that of NADP+?

A

They can both be reduced to NADH and NADPH

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6
Q

Is oxygen used during glycolysis?

A

No

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7
Q

When oxygen is not present, what is the reaction classified as?

A

Anaerobic respiration

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8
Q

What kind of organisms can make alcohol out of glucose?

A

Anaerobic

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9
Q

How many ATP Are just made from fermentation?

A

Zero

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10
Q

How is most of the energy “locked up” in a glucose molecule?

A

When there is no oxygen present to carry it away

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11
Q

When oxygen is present, what is the reaction classified as?

A

Aerobic respiration

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12
Q

What is the next process after glycolysis if oxygen is present?

A

The Krebs Cycle

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13
Q

What is the first compound formed from pyruvic acid?

A

Citric acid

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14
Q

Why is the Krebs cycle also known as the citric acid cycle?

A

Citric acid is the first compound made in the cycle.

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15
Q

How many ATP are produced from the Krebs cycle per glucose?

A

36 ATP

16
Q

Where do all the electron carriers go?

A

They go to make water H2O

17
Q

Where does the ETC occur in the cell?

A

Mitochondria

18
Q

Why is oxygen needed in the ETC?

A

It is the final electron carrier. It keeps back up of electrons occurring.

19
Q

What do the H+ ions do to help generate ATP?

A

Goes through ATP synthase?

20
Q

How many ATO are made from ETC?

A

32 ATP

21
Q

What is the total amount of ATP made per glucose from all the steps of cellular respiration combined?

A

36 ATP

22
Q

Define glycolysis

A

The breakdown of glucose by enzymes, releasing energy and pyruvic acids

23
Q

Define NAD+

A

And electron carrier in glycolysis

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