Select the best response to the question.
?What is the most common cause of bronchiolitis?
A) respiratory syncytial virus
B) ?Haemophilus influenzae type B
C) influenza virus
D)rhinovirus
A
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Carbonic anhydrase in red blood cells:a
removes oxygen from the erythrocyte. b. carries carbon dioxide in the erythrocyte. c. converts carbon dioxide to bicarbonate ion. d. increases the pH of the blood. e. increases the permeability of the capillary to carbon dioxide.
All protists are _____.
A. eukaryotic B. symbionts C. mixotrophic D. unicellular E. monophyletic
Which of the following types of RNA is typically found as a strand that is about 75 to 90 bases long and folds into a structure with four double-helical segments?
a. tRNA b. snRNA c. pre-mRNA d. rRNA
A cell performs its normal activities, grows in size, and makes copies of its organelles during _______.
a) prophase b) anaphase c) interphase d) metaphase e) telophase