Flattened sacs of internal membranes associated with photosynthesis are called
A. cristae.
B. chloroplasts.
C. thylakoids.
D. photosystems.
E. the stroma.
Answer: C
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The most important role of water in biological activities is:
A. Hydrophobic interaction B. Low boiling point C. Hydrogen bond formation D. Ionic bond formation
Depletion of a resource by one species, which lowers the availability of that resource to other species, is an example of:
A. niche divergence. B. direct competition. C. indirect competition . D. predation. E. parasitism.
Species that exhibit an equilibrial life history typically ________
A) have long lives B) exhibit a Type III survivorship curve C) exhibit a Type II survivorship curve D) have a large number of offspring
The osmoregulatory and ionoregulatory problems facing a saltwater fish are
A. loss of water and loss of ions. B. loss of water and gain of ions. C. gain of water and loss of ions. D. gain of water and gain of ions. E. buildup of urea in tissues.