The HIV viral envelope protein gp120 binds to the host cell CD4 receptor.
Answer the following statement true (T) or false (F)
True
You might also like to view...
Nitrogenous waste is excreted from Malpighian tubules mainly in the form of
a. nitrate. b. ammonia. c. uric acid. d. amino acids. e. urea.
Covering only 6 percent of the land surface, tropical rain forests account for more than 50 percent of all known plant and animal species
Indicate whether the statement is true or false
Humans rely on fossil fuels for much of our energy needs. The burning of fossil fuels adds carbon dioxide (CO2) to the carbon dioxide already in the atmosphere. How do plants help keep some of this extra carbon dioxide from accumulating in the atmosphere?
A) Plants store carbon dioxide in their tissues. B) Plants return carbon dioxide to the ground through their roots. C) Plants take in atmospheric carbon dioxide to produce food. D) Plants break down carbon dioxide into carbon and oxygen.
Acid-fast organisms are seen on a section of lung within normal alveolar sacs. They appear to lie slightly out of the plane of the section. This is most likely the result of:
a) contamination from the flotation bath b) a section that is too thick c) poor mounting technique d) the disease process