Balantidium coli uses ________ to penetrate the intestinal mucosa
A) adhesion discs
B) flagella
C) cilia
D) pseudopodia
E) suckers
C
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Lateral meristems
a. are groups of dividing cells. b. are responsible for increases in the width of a stem or root. c. are also called cambia. d. produce secondary growth only. e. include all of these characteristics
Metapopulation dynamics involve the processes of
A) emigration B) extinction C) character displacement D) All of these. E) A and B
The coding regions of a gene are called
A) introns. B) exons. C) promoters. D) enhancers.
Sortase is a protein enzyme of bacteria that ________.
A. functions by transporting flagellum proteins to their extracellular site of assembly B. plays a key role in directing proteins to the periplasm C. catalyzes covalent attachment of some surface proteins to peptidoglycan D. directs secretion of proteins across the outer membrane