Popular Oxygen Quiz

The next set of reactions resulting in the complete breakdown of pyruvate is called the ___.

 NADH molecules are transferred to the___________ located in the inner membrane of the mitochondria. 

Most of the energy removed from the carbon containing molecules during krebs cycle is in the form of _____________ molecules.

Glycolysis takes place in the _______.(where in thecell?)

The electron acceptor for glycolysis is.........

• NAD+

• Carbon dioxide

• Water

• FAD

Krebs cycle occurs in the __________ .

Oxygen is not required during glycolysis.

• True

• False

Chemiosmosis is the use of chemical energy to pump hydrogen ions across a membrane into a compartment.

• True

• False

Assume that a eukaryotic cell has abundant glucose and O2 but needs ATP. The proton gradient in mitochondria of this cell will be generated by __________ and used primarily for _________ .

• Fermentation; NADH synthesis

• Glycolysis; production of water

• Electron transport chain; production of water

• Electron transport chain; ATP synthesis

Which process in eukaryotic cells will normally proceed whether O2 is present or absent?

• Krebs cycle

• Fermentation

• Glycolysis

• Oxidative phosphorylation

During which phase of cellular respiration is ATP not produced directly by substrate level phosphorylation?

• Krebs cycle

• Glycolysis

• All produce ATP by substrate level phosphorylation

• Electron transport chain

The Krebs cycle...

• Uses oxygen

• Uses ATP and NADH

• Produces carbon dioxide

• Occurs in the cytosol

Cellular respiration consists of three interrelated metabolic processes. The first process to occur is called _____1_______.