The photosynthetic membranes of the green sulfur bacteria are called ________.
A. chloroplasts
B. chlorocytes
C. chlorosomes
D. chlorophylls
Answer: C
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Imagine you are studying the turgor pressure at two different ends of a sieve tube. One end of the sieve tube is located within a mature leaf, and the other end is located within the roots
When comparing the turgor pressure within the sieve tube at these two locations, what would you expect to find? A. The turgor pressure will be the same at the leaf and root ends. B. The turgor pressure will be greater at the root end. C. The turgor pressure will be greater at the leaf end. D. Turgor pressure will not exist at either location.
A single, weak contraction of a muscle fiber is called
a. an action potential. b. a muscle twitch. c. fatigue. d. tetanus. e. constriction.
A structure similar to bulbs but lacking the layers is
called a. stolons. b. rhizomes. c. bulbs. d. corms. e. tubers.
Which of the following infectious particles do NOT have protein in their structure?
A) bacteriophages B) prions C) animal viruses D) viroids E) both prions and viroids