SLO 6 Krebs Cycle

Which of these substances are inputs of the Krebs Cycle? Select all that apply.

• Pyruvate

• Acetyl-CoA

• NADH

• FAD

• ATP

Which of these substances are outputs of the Krebs Cycle? Select all that apply.

• CO₂

• CoA

• NAD+

• FADH₂

• ATP

Where does the Krebs Cycle occur? Select all that apply.

• Eukaryotic cells' cytosol

• Mitochondrial matrix

• Eukaryotic cells' cytoplasm

• Prokaryotic cells' cytoplasm

• Aerobic bacteria's cytosol

Which of these "hydrogen carrier" compounds are a source of high energy electrons? Select all that apply.

• FAD

• FADH₂

• NAD+

• NADH

The link reaction transfers which energy-rich organic molecule from the cytosol to the mitochondrion?

• Pyruvate

• Acetyl

• NADH

• ATP

• CO₂

The purpose of the Krebs Cycle is to transfer the energy stored in the acetyl molecule into (select all that apply):

• ATP

• NADH

• FADH₂

• CO₂

• H₂O

In two steps of the cycle, CO₂ molecules are generated from the breakdown of the organic molecules. This process is called:

• oxidation

• reduction

• decarboxylation

• metabolism

• dehydration

Several times during the cycle, an H atom is removed from one of the organic intermediate molecules and broken down into an H⁺ ion and a high energy electron. This process is called:

• oxidation

• reduction

• decarboxylation

• metabolism

• dehydration

Which substance is represented by X?

• NADH

• FADH₂

• CO₂

• ATP

• H⁺

How many carbon atoms are present in a succinate molecule? Enter a number answer.

(a)