All of the following are adaptations to remain stationary in the ever-shifting soft bottom of estuaries except:
a. extensive roots and rhizomes.
b. holdfasts.
c. sessile lifestyle.
d. operculum.
e. byssal threads.
D
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What is anaerobic fermentation?
A. A process that releases energy from food in the absence of oxygen B. A process that releases energy from food in the presence of oxygen C. A process that releases energy from food only found in bacteria D. A process that releases energy from food that is more efficient than aerobic respiration
Recall that archaea and bacteria used to be grouped in the same category. How were archaeons first distinguished from other prokaryotes?
A. through differences in cell size and shape B. through the fact that archaeons have linear and not circular chromosomes C. through differences in ribosomal RNA sequences D. through the lack of horizontal gene transfer in archaeons E. through the observation that archaea cell size is independent of diffusion
Pre-cancerous and even early cervical cancer
a. can be removed if detected early enough. b. may be caused by HPV, a type of papillomavirus. c. can be detected by Pap tests. d. can be prevented with a vaccine. e. include all of these.
Exotoxins are
A) Secretions that always target nervous tissue B) Proteins C) Antiphagocytic factors D) Only released after a cell is damaged or lysed E) Lipopolysaccharides