Most CO2 reacts with water inside red blood cells to form bicarbonate, due to the activity of __________. Fill in the blank(s) with the appropriate word(s)
ANSWER: carbonic anhydrase
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The cell membrane can be described most accurately as
A) permeable to most small molecules but impermeable to larger ones. B) permeable to only larger molecules. C) permeable to all molecules. D) permeable to some molecules and impermeable to others. E) impermeable to all polar molecules.
The wings of birds and the wings of bats represent
a. homologous structures. b. analogous structures. c. homoplastic structures. d. vestigial structures. e. structures that are homoplastic but with homologous components.
The sterilizing gas used in chemiclaves is ________.
A. ethylene oxide B. iodophor C. chlorine dioxide D. formaldehyde E. glutaraldehyde
Your lab instructor hands you a root slide and asks you to show her a cell with condensed chromosomes arranged in a straight line. In which section of the root would you begin your search?
A. It doesn't matter; all zones have the same level of mitotic activity. B. Zone of cell division C. Zone of maturation D. Root cap E. Zone of elongation