What are lipopolysaccharides associated with?
a. the outer membrane of Gram-negative bacteria
b. the plasma membrane of Gram-positive bacteria
c. the plasma membrane of both Gram-positive and Gram-negative bacteria
d. the plasma membrane of Gram-negative bacteria
Ans: a. the outer membrane of Gram-negative bacteria
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Fluid that collects in tissues is returned to the bloodstream by the
A. excretory system. B. digestive system. C. lymphatic system. D. vascular system. E. endocrine system.
In a molecule of methane, CH4, each hydrogen atom shares an orbital with the carbon atom. The total number of
shared electrons in CH4 is ____.
a. 1 b. 2 c. 4 d. 5 e. 8
Cnidarians capture their prey with the use of
a. poison claws. b. nematocysts. c. oral teeth. d. pedal disks.
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).