Keep stomata open only at night Which plants keep their stomata open only at night?
a) CAM
b) C3
c) C4
d) No plants keep their stomata open only at night
Ans: a) CAM
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Which is the correct order of events during the inflammatory response?
A. Phagocytosis, margination, diapedesis, vasodilation B. Margination, vasodilation, diapedesis, phagocytosis C. Vasodilation, margination, diapedesis, phagocytosis D. Diapedesis, vasodilation, phagocytosis, margination
Which class of echinoderms has the greatest species diversity?
a. Asteroidea b. Holothuroidea c. Ophiuroidea d. Echinoidea e. Crinoidea
Polycistronic mRNAs encode Polycistronic mRNAs encode
A) one product that is alternatively spliced. B) more than one protein. C) multiple cis elements. D) exclusively eukaryotic proteins. E) None of these.
Living cells have an intact phospholipid bilayer that separates the cell from its external environment; this structure is commonly referred to as the
a. nucleus. b. mitochondria. c. endoplasmic reticulum. d. plasma membrane.