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BIO Exam 3 > Chapter 7 > Flashcards

Chapter 7 Flashcards

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Biology 101 flashcards
1
Q

True or False? Glycolysis results in the release of carbon dioxide.

A

False

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2
Q

True or False? Glycolysis is a cyclical reaction.

A

False

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3
Q

True or False? Glycolysis breaks down to two pyruvate molecules.

A

True

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4
Q

True or False? Glycolysis occurs twice per glucose molecule.

A

False

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5
Q

True or False? Glycolysis is a reduction reaction where only glucose is reduced

A

False

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6
Q

Where does glycolysis take place within a cell?

A

cytoplasm

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7
Q

What are the final products of glycolysis?

A

pyruvate, ATP, and NADH+H+

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8
Q

What are the input requirements of glycolysis?

A

ATP, NAD+, glucose, and ADP

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9
Q

What role does NAD+ play in cellular respiration?

A

It is a coenzyme, It accepts 2 electrons, It is necessary for glycolysis

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10
Q

What is a substrate of cellular respiration?

A

glucose

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11
Q

Which molecules are the products of aerobic respiration?

A

carbon dioxide and water

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12
Q

Which molecules are the reactants/substrates for aerobic respiration?

A

oxygen and glucose

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13
Q

List the reactions of cellular respiration in order

A
  1. Glycolysis
  2. Preparatory Reaction
  3. Citric acid cycle
  4. electron transport chain
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14
Q

Muscles undergo fermentation when

A

no oxygen is available

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15
Q

Pyruvate can be converted to lactate instead of going to the preparatory reaction. Why does this occur?

A

oxygen is not available

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16
Q

Why do organisms without oxygen need to convert pyruvate to lactate?

A

in order to regenerate NAD+

17
Q

Which phase(s) of cellular respiration produce(s) NADH?

A

glycolysis, preparatory reaction, and citric acid cycle

18
Q

Which stage(s) will produce carbon dioxide in cellular respiration?

A

both the preparatory reaction and the citric acid cycle

19
Q

The largest number of ATP molecules is produced in which phase of cellular respiration?

A

electron transport chain

20
Q

Pyruvate is converted to a two-carbon acetyl group attached to coenzyme A (CoA), and CO2 is given off. This place is called

A

the preparatory reaction

21
Q

True or False? The end product of glycolysis is pyruvate

A

True

22
Q

True or False? The citric acid cycle begins and ends with pyruvate.

A

False

23
Q

True or False? NADH2 will eventually produce three ATP molecules.

A

True

24
Q

True or False? Aerobic respiration uses oxygen and releases carbon dioxide.

A

True

25
Q

Which pathway in cellular respiration will produce ATP, NADH, and carbon dioxide ?

A

citric acid cycle

26
Q

The production of ATP as a result of an electrochemical gradient is called

A

chemiosmosis

27
Q

Why does chemiosmosis require a membrane?

A

to separate two compartments of the cell to allow for gradient formation

28
Q

What is the final electron acceptor at the end of the electron transport chain in respiration?

A

oxygen

29
Q

Which molecules donate electrons to the electron transport chain of respiration?

A

NADH and FAD

30
Q

Where is NAD+ converted to NADH?

A

Cytoplasm and Matrix of the Mitochondrion

31
Q

ATP and ADP have a strong negative charge. How could that get into and out of the mitochondrion?

A

Through a membrane transport protein

32
Q

Where is the electron transport chain located?

A

cristae of mitochondria

33
Q

Fermentation happens where?

A

cytoplasm

34
Q

lactic acid fermentation

A

Animals and bacteria

35
Q

alcohol fermentation

A

Fungi and yeasts

36
Q

The preparatory reaction is located

A

in the matrix of the mitochondria

BIO Exam 3 (5 decks)

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