Lyme disease is vectored by ticks
Indicate whether the statement is true or false
TRUE
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Chimpanzees and humans last shared a common ancestor about ____________ years ago
A. 1 to 2 million B. 6 to 7 million C. 10-11 million D. 6 to 7 billion
Imagine that you have two people using breathing gear under water. Diver 1 is using an old style "rebreather" that removes carbon dioxide before the mixture is "rebreathed" and therefore decreases overall carbon dioxide concentrations in the blood. Diver 2 is using regular SCUBA gear and is breathing air with the normal amount of carbon dioxide that does not lower blood levels of carbon dioxide. Which diver would have a higher blood pH and which would feel more an "urge to breathe"?
A. There would be no difference in blood pH or breathing between the two divers. B. Diver 1 would have higher blood pH and would feel the "urge to breathe" sooner. C. Diver 1 would have higher blood pH, while Diver 2 would feel the "urge to breathe" sooner. D. Diver 2 would have higher blood pH, while Diver 1 would feel the "urge to breathe" sooner. E. Diver 2 would have higher blood pH and feel the "urge to breathe" sooner.
In individuals with cystic fibrosis:a
the mucus enhances the action of the cilia that line the bronchi. b. the mucus prevents the growth of dangerous bacteria in the respiratory system. c. the mucus in the respiratory system is thinner than in unaffected individuals. d. abnormal mucous secretions occur throughout the body systems. e. abnormal mucous secretions inhibit infections by bacteria.
The allele frequency of allele b for the collection of fish in box 1 of the figure is
A. 25%.
B. 50%.
C. 75%.
D. 1:2:1.