The carbonic acid and bicarbonate buffer in blood is extremely important to help maintain homeostasis. What would happen to the pH of the blood if bicarbonate were removed?
A. Removing bicarbonate from the blood would not affect the pH
B. Removing bicarbonate from the blood would increase the pH
C. Removing bicarbonate from the blood would decrease the pH
Answer: C
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Select the formula below that correctly represents the behavior of CO2 in the blood.
A. CO2 + H2O ? H2CO3 + CO B. CO2 + H+ ? HCO3+ ? H2O + H2CO3 C. CO2 + HCO3- ? H+ + H2O + H2CO3 D. CO2 + H2O ? H2CO3 ? HCO3- + H+ E. CO2 + H2CO3 + O2 ? H2O + CO2 + H2CO3
Some combinations of recessive alleles cause problems so severe that a fetus may cease to develop. Such lethal allele combinations appear to alter Mendelian ratios because
A) carriers do not constitute a progeny class. B) they do not show a 1:2:1 genotypic ratio. C) homozygotes for the lethal allele do not appear as a progeny class. D) homozygotes for the lethal allele pass it on to half their offspring.
Members of the ____ lineage, commonly called chitons, have a dorsal shell divided into eight plates that allow it to
conform to irregularly shaped surfaces.
a. Cephalopoda b. Polyplacophora c. Platyhelminthes d. Gastropoda e. Scaphopoda
A relationship between two species in which one species lives in or on the other is
A. predation. B. niche sharing. C. resource partitioning. D. coevolution. E. symbiosis.