Use the Following Figure to Answer the Questions Below

question 64

Multiple Choice

Use the following figure to answer the questions below.

-Referring to the figure above, oxygen would inhibit the CO₂ fixation reactions in

• A)cell I only.
• B)cell II only.
• C)neither cell I nor cell II.
• D)both cell I and cell II.
• E)cell I during the night and cell II during the day.

---

Definitions:

Potassium

A chemical element with the symbol K and atomic number 19, essential for the functioning of all living cells.

Angiotensin II

A peptide hormone that plays a critical role in blood pressure regulation by causing blood vessels to narrow.

Arterial Blood

Blood that is oxygen-rich, pumped from the heart to be distributed throughout the body.

PaO2 Measurement

The determination of the partial pressure of oxygen (PaO2) in the blood, indicative of the oxygen level being transported to body tissues.