The Movement of O₂ and CO₂ Between the Blood in the Tissue

question 245

Multiple Choice

The movement of O₂ and CO₂ between the blood in the tissue capillaries and the cells in tissues depends most directly upon

• A) active transport of O₂ and CO₂.
• B) total atmospheric (barometric) pressure differences across the cell membranes.
• C) diffusion of O₂ and CO₂ down a concentration gradient.
• D) diffusion of O₂ and CO₂ down a partial pressure gradient.
• E) osmosis across cell membranes.

---

Definitions:

Winner-take-all

An electoral system in which the candidate receiving the most votes wins all of the available seats or electoral votes, leaving nothing for the losing parties.

Electoral College

A body of electors established by the United States Constitution, which formally selects the President and Vice President of the United States.

Maine

A state located in the northeastern United States, known for its scenic coastlines, lighthouses, seafood cuisine, particularly lobster and clams, and as the easternmost state of the continental U.S.

Nebraska

A state located in the Midwestern region of the United States, known for its agriculture and wide open spaces.