Question

human blood has a ph of 7.4. how do buffers in the blood affect the ph? * 2 points
blood ph regulation at rest

• blood is the main route of removing toxic metabolic by - products such as h⁺ and co₂
• h⁺ ions move down a concentration gradient from tissues where they are produced and into the blood for removal
• it is critical that this movement of h⁺ into the blood does not cause blood ph to change: acid blood (acidosis) = disease/death
• thus the ph of blood is tightly regulated between 7.35 and 7.45

buffers are acids or bases that cause the ph of blood to decrease.
buffers are bases that cause the ph of blood to increase.
buffers prevent small amounts of acid or base from changing the ph of blood.
buffers are catalysts that prevent changes to the ph of blood.

Explanation:

Buffers are solutions that resist changes in pH upon addition of small amounts of acid or base. In blood, they maintain the pH within a narrow range (7.35 - 7.45) by reacting with excess acids or bases. They are not catalysts, and they don't simply increase or decrease pH but rather keep it stable.

Answer:

Buffers prevent small amounts of acid or base from changing the pH of blood.