Refer to Exhibit 4 A. The overall, net ionic charge on this peptide at pH = 7 would b
a. +2
b.+1
c. 0
c. -1
d. -2
Answer: b.+1
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Colonial cnidarians
a. include Obelia. b. include the Portuguese man-of-war. c. include corals. d. may harbor dinoflagellate symbionts. e. fit all of these descriptions.
Light from the left half of the visual field
a. strikes receptors on the right side of the right retina. b. strikes receptors on the right side of the left retina. c. generates signals that are sent back to the right visual cortex. d. does all of these. e. does none of these.
The site of anaerobic ammonia oxidation in the recently described genera Brocadia, Kuenenia, Scalindua, and Anammoxoglobus is called the ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following is not a characteristic found in Gram-negative bacteria?
A. A peptidoglycan cell wall. B. An outer membrane composed of lipopolysaccharide. C. A thick peptidoglycan cell wall that stains purple. D. They Gram stain pink. E. Plasmids and antibiotic resistance.