Question

question 20 (1 point)ultraviolet light controls microbes by:damaging dnacoating cell membranesbreaking peptide bondsremoving waterquestion 27 (1 point)heavy metals control microbes by:increasing phdehydrating cellsdenaturing proteinsbreaking dna

Explanation:

• Ultraviolet light causes formation of thymine dimers in DNA, which disrupts DNA replication and transcription, thereby controlling microbes.
• Heavy metals bind to proteins, altering their structure and function (denaturation), which inhibits microbial activity.

Answer:

Question 26: Damaging DNA
Question 27: Denaturing proteins