When making bread with common yeast, the reaction starts as an aerobic process and then becomes an anaerobic process after the oxygen is spent. A baker has created a new strain of yeast which contains no cytochrome c gene and, thus, no cytochrome c protein. This will affect what the yeast strain can do to obtain energy.

Question

When making bread with common yeast, the reaction starts as an aerobic process and then becomes an anaerobic process after the oxygen is spent. A baker has created a new strain of yeast which contains no cytochrome c gene and, thus, no cytochrome c protein. This will affect what the yeast strain can do to obtain energy.

Use the passage to answer the question.

Will this new strain of yeast obtain more or less free energy from glucose in its growing medium?

more because it does not have to make cytochrome c and has more resources to give to obtaining energy

less because cytochrome c is key to the electron transport chain

more because making cytochrome c uses up ATP

less because cytochrome c directly produces ATP in the cytoplasm

Answer 1

less because cytochrome c is key to the electron transport chain.