A particular hormone is secreted into the bloodstream, so hypothetically, any cell that is part of a tissue that has a blood supply would be exposed to this hormone. Why do only certain cells respond to a hormone?
What will be an ideal response?
Only cells that have receptors either on their plasma membrane, or in the cytoplasm will bind to the hormone, causing the specific effect. So, although thyroid-stimulating hormone is secreted into the bloodstream, only cells of the thyroid have receptors for this hormone, and only these cells then respond.
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What virus first emerged in Asia in 2003?
a) MERS b) RSV c) SARS d) H1N1 flu
All of the following organisms are correctly matched to the recommended treatment EXCEPT
A) Neisseria meningitidis — cephalosporins. B) Haemophilus influenzae — cephalosporins. C) Cryptococcus neoformans — amphotericin B. D) Mycobacterium leprae — dapsone. E) poliovirus — amphotericin B.
Hantavirus can be diagnosed by detection of
a. exposure to the virus. b. strength of immune response. c. presence of viral genome. d. all of the above.
Compare and contrast photosynthesis conducted by green photosynthetic bacteria (photosystem I), purple bacteria (photosystem II), and cyanobacteria ("Z pathway").
What will be an ideal response?