Question

Temperature tolerance of thermal blue-green algae is due to

• A. Cell wall structure
• B. Cell organisation
• C. Mitochondrial structure
• D. Homopolar bonds in their proteins

Answer 1

Answer: (D)

Homopolar bonds in their proteins

Many blue-green algae occur in thermal springs or hot water springs. Temperature tolerance of these thermal blue-green algae is due to homopolar bonds in their proteins. These homopolar bonds help them to survive in extreme temperatures.

Thus, the correct answer is 'Homopolar bonds in their proteins.'