Oxygen Moves from Alveoli to the Bloodstream ____

question 29

Multiple Choice

Oxygen moves from alveoli to the bloodstream ____.  

• A) because the partial pressure of oxygen is greater in alveoli than in the blood
• B) mainly due to the activity of carbonic anhydrase in the red blood cells
• C) against a concentration gradient
• D) to equal the concentration of CO₂ in the blood
• E) by active transport

---

Definitions:

Insurance Exchanges

Marketplaces established to facilitate the purchase of health insurance in every state, as part of the Affordable Care Act, allowing consumers to compare and buy insurance plans.

Preexisting Conditions

Health issues or conditions that an individual had before enrolling in a new health insurance plan, often relevant in determining coverage and premiums.

Personal Mandate

A requirement for individuals to obtain a specific good or service, often associated with health insurance policies to ensure broad coverage across a population.

Medicaid Coverage

A joint federal and state program in the United States that helps with medical costs for some people with limited income and resources.