Possible causes of hypoxia include ________.
A) too little oxygen in the atmosphere
B) obstruction of the esophagus
C) taking several rapid deep breaths
D) getting very cold
A) too little oxygen in the atmosphere
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The amount of water in a cell placed in a 0.8 Osm solution would ________.
A. decrease B. remain constant C. increase
Which is the rarest ABO blood type in the United States?
A. B B. AB C. A D. O
Which transport process is the main mechanism for the movement of most macromolecules by body cells?
A) secondary active transport B) receptor-mediated endocytosis C) pinocytosis D) phagocytosis
In a covalent bond
A) oppositely charged atoms attract. B) atoms share a pair or more of electrons. C) like-charged atoms repel. D) one atom loses and another atom gains electrons.