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Subject Test Biology

Question 10 of 24

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SAT Subject Test

The multiple choice questions have five answer choices — one (and only one) is correct in each case.

The pH of human blood is slightly basic. Which of the following is most likely to be the pH of human blood?

Select an Answer

10.6

Correct Answer: 
No

7.4

Correct Answer: 
Yes

7.0

Correct Answer: 
No

6.4

Correct Answer: 
No

4.6

Correct Answer: 
No

The correct answer is 7.4. The question gives you the information that blood is slightly basic. 10.6 is very basic (recall that pH is a logarithmic scale), 7 is neutral, 6.4 is slightly acid, and of course 4.6 is the most acid of the five choices.

Question Difficulty: 
medium