Cellular Respiration Flashcards

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1
Q

What is cellular respiration?

A

The enzymatic breakdown of glucose (C6H12O6) in the presence of oxygen (O2) to produce cellular energy (ATP)

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2
Q

What is the chemical equation for cellular respiration

A

C6H12O6 + 6O2 –> 6CO2 + 38 ATP

glucose+oxygen—> carbon dioxide+water+38 ATP

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3
Q

What is glycolysis?

A

A ten step orocess that occurs in the cytoplasm

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4
Q

what does glycolysis convert?

A

each molecule of glycose to two molecules of pyruvic acid (a 3-carbon molecule)

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5
Q

What kind of process is glycolysis?

A

an anaerobic process-proceeds whether or not O2 is present; O2 is not required

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6
Q

What is the net yeald of ATP per clugose molecule in glycolysis?

A

2 ATP

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7
Q

What is the net yield of NADH per glucose in glycolysis?

A

2

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8
Q

What is NADH?

A

Is nicotine adenline dinucleotide, a co-enzyme that serves as a carrier for H+ ions in the Electron Transport Chain?

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9
Q

What is the Link Reaction in glycolysis?

A

The pyruvic acid diffuses into the inner compartment of the mitochondrion (matrix) where a reaction occures to prepare pyrivic acid for entry into the next stage of respiration

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10
Q

What is the chemical equation for the link reaction in glycolysis?

A

pyrivic acid + acetic acid + co-enzyme A -> acetyl CoA + CO2 + 2 NADH

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11
Q

Where does the CItric Adic or Krebs Cycle occur?

A

Inner mitochondiral matric

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12
Q

What happeneds in the Krebs cycle?

A

The acetyl group detatches from teh co-enzyme A and enters the reaction cycle.

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13
Q

What kind of process in the Krebs cycle?

A

an aerobic process; will proceed only in the presence of O2

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14
Q

What is the net yielf of ATP per glucose molecule in Krebs cycle?

A

2

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15
Q

What is the net yield of NADH and FADH2 in the Krebs cycle?

A
6 NADH
2 FAD (serves the same purpose as NAD)
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16
Q

Krebs cycle: at this stage of cellular respiration, the oxidation of ___to___is completed.

A

glucose
CO2
*CO2 is a byproduct

17
Q

What does the electron transport system consist of?

A

a series of enzymes on the inner mitochondrial membrane (cristae)

18
Q

___electrons are relased from NADH and from FADH2 and as they are passed along the series of enzymes, they give up___which is used to fuel as process called____.

A

H+
energy
chemiosmosis

19
Q

What is chemiosmosis?

A

By which H+ ions are actively transported across the inner mitochondiral membrane into the outer mitochondrial compartment. The H+ ions then flow back through special pores in the membrane a process that is thought to drive the process of ATP synthesis

20
Q

What is the net yield of Electron Transport System ATP per glucose molecule.

A

34

21
Q

At the end of the electron transport system, how many H2Oare formed when the electrons united with O2 at the end of the electron transport chain?

A

6

22
Q

What is the function of oxygen in living orgnaisms.

A

6H2O are formed when teh electrons unite with O2 at the end of electron transport chian.

23
Q

What is anaerobic respiration?

A

The breakdown of glucose in the ansence of oxygen, producing 2 ATP.

24
Q

Anaerobic respiration is called____? and produces___ in univellular organisms, such as yeast, or __ ___ in our muscles, and in microorganisms.

A

fermentation
alcohol
lactic acid

25
Q

In the absence of oxygen, anaerobic respiration consists of which two pathways?

A

glycolysis and fermentaton (both occur ein the cytoplasm)

26
Q
Glycosis
location in cell
reactionts
products
ATP produced
A

cytoplasm
glucose
pyruvate, NADHx2
2

27
Q
Kreb's Cycle
location in cell
reactionts
products
ATP produced
A

mitochondrial matrix
oxygen, acetyl CO-A
CO2, NADHx6, FADHx2
2

28
Q
ETS
location in cell
reactionts
products
ATP produced
A

mitochondrial cristae
hydrogen (from NADH, FADH), oxygen
H2O
34

29
Q
Fermentation
location in cell
reactionts
products
ATP produced
A

Cytoplasm
Glucose
Alcohol, lactic acid
2