Which of these statements is NOT true?

Correct option is D

The correct answer is (d) Proteins are not affected by temperature.
· Proteins are indeed affected by temperature, as well as by changes in pH. At high temperatures, proteins can denature, meaning they lose their structure and functionality. Similarly, changes in pH can also lead to denaturation. While proteins may become less active or inactive at low temperatures, they do not typically denature as they do at high temperatures.
Information Booster:
Denaturation at high temperature:
· High temperatures can cause proteins to unfold, losing their functional three-dimensional structure.
Denaturation by change in pH:
· pH changes can alter the ionic bonds and hydrogen bonds that hold a protein's structure, leading to denaturation.
Inactivity at low temperatures:
· At low temperatures, proteins may become less active or inactive, but their structure typically remains intact until re-warmed.