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Cellular Respiration Bio 9 > Cellular Respiration > Flashcards

Cellular Respiration Flashcards

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Biology 101 flashcards
1
Q

What is glycolysis?

A

A biochemical pathway that begins cellular respiration

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2
Q

What serves as the final acceptor of electrons in the electron transport chain?

A

Oxygen

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3
Q

What is phosphofructokinase and what does it do?

A

It is an enzyme that ultimately controls glycolysis. It is an allosteric enzyme which means it works when ADP binds to it

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4
Q

What are the three products of glycolysis?

A

Two pyruvate, two NADH, and two ATP

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5
Q

What are the two products of the fermentation of yeast?

A

Ethyl alcohol and CO2

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6
Q

What are the four parts of the mitochondria?

A
  • the matrix
  • the outer membrane
  • the inner membrane
  • the inner membrane space
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7
Q

How does the digestive system work?

A
  • mouth (saliva+chewing)
  • esophagus
  • stomach (acid+digestive juices)
  • duodenum (liver/bile) (pancreas)
  • small intestine (absorption)
  • large intestine (H2O absorption)
  • anus (feces)
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8
Q

What is the matrix and its process?

A

It’s the space inside the inner membrane of a mitochondria. It contains the enzymes needed to catalyze the reactions of the Krebs cycle

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9
Q

What is PGAL?

A

It is an intermediate molecule

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10
Q

Where does glycolysis take place?

A

In the cytoplasm

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11
Q

What is the balanced equation for cellular respiration?

A

C6H12O6+6O2—–>6Co2+6H2O+36-38ATP

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12
Q

What is the process of the inner membrane?

A

The electron transport chain lines the inner membrane and protects the matrix

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13
Q

Glycolysis in anaerobic which means what?

A

It does not need oxygen to occur

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14
Q

What happens to AcCoA if we don’t need ATP?

A

Excess AcCoA are strung together to form fatty acids

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15
Q

What are the steps of the electron transport chain?

A
  • electrons move across cristae which allow protons(H+) to move across membrane
  • Concentration gradient is created and H+ passes through ATP synthetase
  • ATP is formed
  • H+ joins with e- and O2 to make water
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16
Q

When does aerobic respiration occur?

A

When oxygen is present

17
Q

What does cellular respiration begin with?

A

Glycolysis

18
Q

What is fermentation?

A

A set of anaerobic pathways in which pyruvic acid is converted into other organic molecules in the cytocol

19
Q

Does fermentation produce ATP?

A

No, but it does regenerate NAD+, which helps keep glycolysis operating

20
Q

What happens in lactic acid fermentation?

A

An enzyme converts pyruvic acid into lactic acid

21
Q

What happens in alcoholic fermentation?

A

Other enzymes convert pyruvic acid into ethyl alcohol and Co2

22
Q

What is cellular respiration?

A

The complex process in which cells make ATP by breaking organic compounds

23
Q

For each six-carbon molecule that begins glycolysis, how many ATP molecules are used and how many ATP molecules are produced?

A

Start with two end with 38

24
Q

Where does the Krebs cycle take place?

A

In the mitochondria

25
Q

What are the products of fermentation?

A

Ethyl alcohol, Co2, and lactic acid

26
Q

What is the product of glycolysis

A

Pyruvic acid

27
Q

What is the product of etc

A

ATP

28
Q

What are the products of the Krebs cycle

A

Co2, hydrogen atoms, and ATP

29
Q

What does it create when Acetyl CoA and lactic acid combine

A

Citric acid

30
Q

Why do you need etc in aerobic respiration?

A

It is the second stage in aerobic respiration. In etc NADH is used to make ATP. The Krebs cycle only makes a small amount of ATP while most of the ATP is produced during aerobic respiration is made by the etc

31
Q

Under what conditions do you need for your body to undergo lactic acid fermentation

A

When there is not enough oxygen to produce ATP such as intense workouts

32
Q

Why is photosynthesis responsible for aerobic respiration?

A

Photosynthesis is responsible for aerobic respiration because the glucose required for cellular respiration and glycolysis is produced by plants

33
Q

why do you need to breath heavier and sweat more when you work out

A

You breath heavier because your body needs more oxygen so it won’t go through fermentation which will make you sore because of the build up of lactic acid and you sweat to cool your body down

34
Q

What does it create when Acetyl CoA and lactic acid combine

A

Citric acid

Cellular Respiration Bio 9 (12 decks)

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