Chapter 16

How can organisms such as Halobacterium survive in a high-salt environment, whereas an organism such as Escherichia coli cannot? (Section 16.1)

What is reverse DNA gyrase and why is it important to hyperthermophiles? (Section 16.13)

Why might \(\mathrm{H}_{2}\) metabolism have evolved as a mechanism for energy conservation in the earliest organisms on Earth? (Section 16.14)