Some bacteria avoid being phagocytized by a host's immune system by means of:

a. ameboid motion.
b. their capsule or slime layer.
c. efficient use of their flagella.
d. changing their cell wall structure.
e. eliminating the use of a membrane


b

Biology & Microbiology

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Mechanisms that evolved in plants to regulate the rate of water loss do not include  

A.  becoming dormant during dry times of the year. B.  losing leaves. C.  producing leaves that are thick and hard. D.  containing stomata in crypts or pits. E.  increasing the number of water vacuoles in the cells.

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The human has __________ sets of autosomal chromosomes. What will be an ideal response?

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Some microorganisms use gaseous nitrogen directly from the atmosphere in a process called

A. denitrification. B. photosynthesis. C. nitrogen fixation. D. nitrogen synthesis.

Biology & Microbiology

A(n) __________ property is a characteristic of a

system that does not appear in any of its component parts. a. efferent b. emergent c. elective d. energetic e. living

Biology & Microbiology