CELLULAR RESPIRATION - Collin College



CELLULAR RESPIRATION

Fill in all the squares with coefficients and answer the questions.

Balance the equation:

C6H12O6 + O2 CO2 + H2O + total ATPs

glucose oxygen carbon dioxide water energy

Glycolysis, Pyruvate Oxidation & Citric Acid Cycle (also called the Krebs cycle), and Oxidative Phosphorylation (involves ETC + chemiosmosis).

FOOD

GLUCOSE

ATP

NADH

PYRUVATE PYRUVATE

CO2 CO2

NADH NADH

ACETYL-CoA ACETYL-CoA

NADH NADH

FADH2 FADH2

ATP

ATP

CO2 CO2

Sum: NADH x 2.5 ATP =

FADH2 x 1.5 ATP =

ATP

|Total number of ATPs made through oxidative phosphorylation on page 1. | |

|Total number of ATPs made through substrate-level phosphorylation on page 1 (ATP). | |

|Which phosphorylation type (substrate-level or oxidative phosphorylation) provides more ATPs? | |

|Gross (total) ATPs (if electrons are passed to NAD+ shuttle) | |

|Net ATPs (if electrons in Glycolysis are passed to FAD shuttle) | |

|How efficient is cellular respiration? | |

|% efficient = total ATP X 7.3 Kcal/686 Kcal X 100 | |

How many carbon atoms are there in *one* molecule of:

|Glucose | |

|C6H12O6 | |

|Pyruvate | |

|C3H3O3 | |

|Acetyl | |

|C2H3O | |

|Carbon dioxide | |

|CO2 | |

CELLULAR RESPIRATION KEY

Fill in all the squares and answer the questions.

Balance the equation:

C6H12O6 + O2 CO2 + H2O + total ATPs

glucose oxygen carbon dioxide water energy

Glycolysis, Pyruvate Oxidation & Citric Acid Cycle (also called the Krebs cycle), and Oxidative Phosphorylation (involves ETC + chemiosmosis).

FOOD

GLUCOSE

ATP

NADH

PYRUVATE PYRUVATE

CO2 CO2

NADH NADH

ACETYL-CoA ACETYL-CoA

NADH NADH

FADH2 FADH2

ATP

ATP

CO2 CO2

Sum: NADH x 2.5 ATP =

FADH2 x 1.5 ATP =

ATP

|Total number of ATPs made through oxidative phosphorylation on page 1. |28 |

|Total number of ATPs made through substrate-level phosphorylation on page 1 (ATP). |4 |

|Which phosphorylation type (substrate-level or oxidative phosphorylation) provides more ATPs? |Oxidative Phos. |

|Gross (total) ATPs (if electrons are passed to NAD+ shuttle) |32 |

|Net ATPs (if electrons in Glycolysis are passed to FAD shuttle) |30 |

|How efficient is cellular respiration? |34 % |

|% efficient = total ATP X 7.3 Kcal/686 Kcal X 100 | |

How many carbon atoms are there in *one* molecule of:

|Glucose |Six…C6 |

|C6H12O6 | |

|Pyruvate |Three …C3 |

|C3H3O3 | |

|Acetyl |Two…C2 |

|C2H3O | |

|Carbon dioxide |One…C |

|CO2 | |

-----------------------

GLYCOLYSIS

PYRUVATE OXIDATION

CITRIC ACID CYCLE

OXIDATIVE PHOSPHORYLATION

32

6

6

6

1

2

GLYCOLYSIS

2

1

1

PYRUVATE OXIDATION

1

1

3

3

CITRIC ACID CYCLE (or KREBS CYCLE

1

1

1

1

2

2

25

10

3

OXIDATIVE PHOSPHORYLATION

2

28

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