The scientist(s) given credit for adding the third component (which contradicted spontaneous generation) to the cell theory is/are
A. Louis Pasteur.
B. Mathias Schleiden and Theodore Schwann.
C. Robert Hooke.
D. Rudolf Virchow.
E. Antony van Leeuwenhoek.
D. Rudolf Virchow.
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Answer the following statements true (T) or false (F)
1. Gangrene is always caused by a bacterium. 2. Trachoma, Rocky Mountain spotted fever, and ehrlichiosis are all caused by obligate intracellular pathogens. 3. a-Hemolytic streptococci of oral origin and Staphylococcus epidermidis are common causes of subacute bacterial endocarditis (SBE). 4. Haemophilus influenzae is the most common cause of influenza. 5. Meningitis can be caused by a virus, a bacterium, a fungus, or a protozoan.
You are testing a drug that might be marketed as an anti-inflammatory agent. It would be a good choice if it possessed which of the following responses?
A) stimulates the release of prostaglandins B) blocks adenylate cyclase activity C) blocks an enzyme associated with arachidonic acid production D) stimulates the activation of platelets E) all of the above
The "green revolution" refers to the
A) global intensification of agricultural production. B) political struggles in Ireland. C) change in the distribution of worldwide poverty. D) global environmental movement. E) expansion of forests worldwide.
Which animal has an endoskeleton made entirely of cartilage and reinforced with cartilage?
A) bullfrog B) mackerel C) shark D) robin