A genetic mutation causes an individual to produce hemoglobins that do not change their binding affinity for oxygen, even after oxygen binds to a single heme site. How will this mutation affect the transport of oxygen through the individual's bloodstream?
A. More oxygen will be transported by
hemoglobin to tissues throughout the body.
B. Less oxygen will be transported by
hemoglobin to tissues throughout the body.
C. The same amount of oxygen will be
transported by hemoglobin to tissues
throughout the body.
B
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Which of the following correctly lists the six most abundant elements found in living organisms?
A. carbon, hydrogen, oxygen, nitrogen, phosphorus, sulfur B. water, carbon, oxygen, nitrogen, phosphorus, sulfur C. water, carbon, hydrogen, oxygen, nitrogen, salt D. carbon, hydrogen, oxygen, carbon dioxide, nitrogen, salt
How would an animal compensate for a nonfunctional lateral line?
A. Sex recognition by male fish would have to be accomplished by the olfactory structures. B. Pressure waves in the water would have to be detected by other sensory structures. C. Propulsion and directional control would have to be facilitated by other fins. D. Gas exchange through the gill slits would have to be increased. E. Skeletal support would need to be reinforced internally.
Only sixty one of the sixty four codons specify an amino acid. What is the function of the other three codons?
What will be an ideal response?
Which of the following pairs is mismatched?
A) malaria — Anopheles (mosquito) B) dengue — Aedes (mosquito) C) epidemic typhus — Pediculus (louse) D) Rocky Mountain spotted fever — Dermacentor (tick) E) encephalitis — Ixodes (tick)