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Gabriela F.
Biomedical Sciences Tutor
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Question:

What is the final electron acceptor in the oxidative phosphorylation process?

Gabriela F.
Answer:

Oxygen is the final electron acceptor in the oxidative phosphorylation process. It combines with the increased Hydrogen within the intermembrane space, and with the electron attached to the electron carrier protein, to create water - a final product.

Biomedical Science
TutorMe
Question:

Which area of the heart is described as the "pacemaker"?

Gabriela F.
Answer:

The SA (sinoatrial) node (upper wall of right atrium) consists of a group of specialized cardiac muscle cells that initiate contraction of the atria and send delayed impulses to AV (atrioventricular) node. Gap junctions spreads contraction to surrounding cardiac muscles via electrical synapses.

Biology
TutorMe
Question:

Which term describes an embryonic cell's potential to become any part of the developing organism?

Gabriela F.
Answer:

Totipotency describes an embryonic cell's ability to become any part of the developing organism.

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