Final answer:
Blood is slightly more alkaline than pure water with an average pH of 7.4, which is higher than water's pH of 7.0. This fact is true as blood contains buffers to maintain its pH within a narrow range for proper biological functioning.
Step-by-step explanation:
In general, blood has a higher pH than pure water, which is a true statement. The pH of blood averages about 7.4, typically ranging from 7.35 to 7.45 in a healthy person, making it slightly alkaline or more basic. In contrast, pure water, which is neutral, has a pH of exactly 7.0. The maintenance of blood's pH is crucial for various biological processes, as it contains buffers that help regulate its pH. Fluctuations outside of the normal pH range can lead to severe medical consequences because enzymes require specific pH levels for optimal functionality.