Light energy passes from phycobiliproteins to reaction centers in
A) cyanobacteria.
B) green sulfur bacteria.
C) purple bacteria.
D) most photosynthetic bacteria.
Answer: A
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Which one of the following statements is not true?
A) The scanning electron microscope is used to examine the surfaces of various objects and its resolving power is approximately 20 nm. B) The transmission electron microscope is used to examine very thin sections of various specimens and its resolving power is approximately 1,000 times better than the resolving power of the unaided human eye. C) 0.5 mm = 500 ?m = 500,000 nm. D) Better resolution can be achieved using transmission electron microscopes than can be achieved using scanning electron microscopes.
Methanogenic Archaea are ________.
A. obligate aerobes that consume methane B. obligate aerobes that produce methane C. obligate anaerobes that consume methane D. obligate anaerobes that produce methane
Nutrients reach cells in the epidermis by ________
A) moving out of dermal blood vessels and diffusing through tissue fluid to the epidermis B) moving out of blood vessels in the epidermis C) moving out of blood vessels that originate in the hypodermis and extend into the epidermis D) All of the above are true.
Explain the steps involved in the clotting process
What will be an ideal response?