Cellular pH is typically around what value?

Prepare for the Foundations of Biology Exam 1. Dive into key biological concepts with multiple choice questions, hints, and explanations. Ace the exam with our efficient study methods!

Multiple Choice

Cellular pH is typically around what value?

Explanation:
Cells keep their internal environment near neutral because enzymes and metabolic reactions work best at that pH. The cytosol is typically around pH 7.0 to 7.4, often cited as about 7.2, and buffering systems help hold it there. Values around 6 would be too acidic for many enzymes, while values around 8 or 9 would be too basic, shifting enzyme activity and destabilizing structures. So cellular pH is typically around 7.

Cells keep their internal environment near neutral because enzymes and metabolic reactions work best at that pH. The cytosol is typically around pH 7.0 to 7.4, often cited as about 7.2, and buffering systems help hold it there. Values around 6 would be too acidic for many enzymes, while values around 8 or 9 would be too basic, shifting enzyme activity and destabilizing structures. So cellular pH is typically around 7.

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