Use the following to answer the questions below:
In each of the following multiple-choice questions, characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:
-Statements: (1) Both ribosomes and mitochondria are examples of organelles.
(2) Cytochromes are heme-containing proteins that can undergo reversible oxidation and reduction.
(3) The electrons that pass through the various steps of the ETC lose some energy with each transfer along the chain.

Question

Quizplus · Accepted Answer

Statement (1) is true because both ribosomes and mitochondria are organelles. 
Statement (2) is true because cytochromes are indeed heme-containing proteins that can undergo reversible oxidation and reduction. 
Statement (3) is true because, as electrons pass through the electron transport chain, they lose energy with each transfer. Therefore, all three statements are true.

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