The method(s) used to study the reproductive behavior of armadillos included which of the following?
a. Statistical techniques.
b. Polymerase chain reaction.
c. Direct observation of mating.
d. Statistical techniques and Polymerase chain reaction.
e. Mark-release-recapture.
D
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You are interested in the mobility of two different unknown integral plasma membrane proteins—protein X and protein Y—in a cell. In one cell, you fluorescently label all the X proteins
In another cell, you label all the Y proteins. When you perform FRAP analysis on both cells, you find that most of the protein X fluorescence has recovered within 3 minutes, but recovery of the protein Y fluorescence is significantly slower. Even after 10 minutes, only 50% of the protein Y fluorescence has recovered. Describe the FRAP experimental protocol, explain what the results tell you about mobility of the X and Y proteins, and propose a possible explanation for why the mobilities of the two proteins differ. What will be an ideal response?
Which of the following occurs during forced expiration?
a. The alveoli inflate. b. The ribs move upward. c. The internal intercostal muscles contract. d. The floor of the thoracic cavity moves downward. e. The pressure increases in the thoracic cavity.
Make organic compounds Organisms that make their own organic compounds from inorganic substances are called
a) animals. b) animorphs. c) heterotrophs. d) autotrophs.
Koplik spots are a diagnostic indicator of
A) chickenpox. B) smallpox. C) fifth disease. D) rubella. E) measles.