The principal job of the human nervous system is to
a. facilitate communication among the body systems.
b. store information.
c. replace or repair damaged tissues.
d. provide for defense against pathogens.
e. rid the body of metabolic wastes.
A
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The following sequence represents events in the development of a fruit:
A. pollination, fertilization, embryo, ovary matures B. pollination, germination of pollen, endosperm, ovule C. pollination, endosperm, embryo, ovule matures D. pollination, fertilization, germination of pollen, ovule matures, embryo forms E. pollination, double fertilization, ovule matures, embryo forms, ovary matures
___________ are spiral-shaped bacteria with wriggly movement caused by the activity of axial filaments.
A) Bacilli B) Cocci C) Spirilla D) Spirochetes
The M protein enhances the virulence of Streptococcus by preventing phagocytosis
Indicate whether the statement is true or false
If protein were the genetic principle and not nucleic acid, significant mutagenic effects would be detected at ________
A) 300 nm B) 240 nm C) 320 nm D) 260 nm E) 280 nm