How big are most cells?
a. 10-20 nanometers
b. 10-20 micrometers
c. 10-20 millimeters
d. 10-20 centimeters
e. 10-20 meters
B
Biology & Microbiology
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In the U.S. over ____ of the coastal wetland habitats have been destroyed
a. b. c. d. e.
Biology & Microbiology
With injury, illness, anxiety, or starvation
a. cortisol levels in the blood increase dramatically. b. the adrenal medulla releases norepinephrine and epinephrine. c. the respiratory rate increases. d. the fight or flight response is activated. e. all of these occur
Biology & Microbiology
Plants became erect, taller, and branched as a result
of their ability to produce a. cutin. b. lignin. c. cellulose. d. complex carbohydrates. e. suberin.
Biology & Microbiology
What is a 15-meter tall tree fern?
A. A gametophyte B. A sporophyte C. Haploid D. Produced by meiosis
Biology & Microbiology