Most plants appear green because:
a. Chlorophyll is a pigment that reflects green wavelengths of light
b. Carotenoids are pigments that reflect green wavelengths of light
c. Carotenoids are pigments that absorb green wavelengths of light
d. Chlorophyll is a pigment that absorbs green wavelengths of light
Answer: a. Chlorophyll is a pigment that reflects green wavelengths of light
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One of the earliest antimicrobials isolated from a bacterium was
A. penicillin. B. ampicillin. C. Salvarsan. D. streptomycin.
The ____ and ____ of rivers are key determinants of their physical habitats
a. flow rate; volume b. size; shape c. flow rate; temperature d. location; volume e. biodiversity; species richness
The right and left hemispheres of the cerebrum are connected by the:a
central sulcus. b. corpus callosum. c. substantia nigra. d. central canal. e. corpus striatum
Spherical bacteria that occur in clusters are ________
A) streptococci B) bacilli C) spirochetes D) staphylococci