Obligate anaerobes are usually poisoned by molecular oxygen but may grow in aerobic habitats if associated with facultative anaerobes that use up all available oxygen.
Answer the following statement true (T) or false (F)
True
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Extreme thermophiles that live near thermal vents must have all of the following adaptations except
A) plasma membrane lipids that are highly branched and saturated. B) plasma membrane lipids that are highly unsaturated. C) they must also be barophiles. D) specialized chaperone proteins. E) proteins that resist thermal denaturing.
Steroid hormone-receptor complexes act in _____.
Fill in the blank(s) with the appropriate word(s).
The extra amount of air that can be forced into and out of the lung is called the
A. tidal volume. B. residual volume. C. tidal wave. D. vital capacity. E. vital volume.
How do ray-finned fish keep from sinking?
a. they are constantly swimming b. they don’t constantly swim but their fins are constantly moving c. they have lungs that are always filled with air d. they have a swim bladder that is filled with gas e. they have a skeleton that is less dense than the surrounding water