During human inhalation, the diaphragm ____ and the external intercostal muscles ____
a. contracts; relax
b. relaxes; contract
c. contracts; contract
d. relaxes; relax
e. expands; vibrate
ANSWER: c
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Which statement about the cell division of prokaryotes and eukaryotes is true?
a. In both processes, genomic DNA is replicated. b. In both processes, mitosis is a necessary step. c. In both processes, DNA is enclosed in a nucleus. d. In both processes, FtsZ proteins create a septum.
What do modern non-African peoples have a bit of in their genome that Africans do not?
What will be an ideal response?
You discover a new sunflower that has blue flowers instead of yellow. When you cross this blue variety with a common yellow variety you get blue and yellow speckled flowers. What type of inheritance pattern does this gene exhibit?
A. sex-influenced dominance B. either incomplete dominance or codominance C. simple Mendelian inheritance D. codominance E. incomplete dominance
Actinomyces israelii
A. can be transmitted by respiratory droplets. B. can cause pneumonia with symptoms similar to tuberculosis. C. are filamentous rods that grow in clusters called sulfur granules in infected tissue. D. lives in the soil. E. causes most cases in the immunocompromised.