Once a virus establishes lysogeny, it may not switch to the lytic cycle at some later time.
Answer the following statement true (T) or false (F)
False
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Wöhler revolutionized biology through his demonstration that biological molecules are governed by the ordinary laws of physics and chemistry. He demonstrated this principle by
A) synthesizing urea in the laboratory from ammonium cyanate. B) developing techniques for isolating, purifying, and analyzing subcomponents of cells. C) defining the laws of heredity. D) discovering active agents in cell extracts that were specific biological catalysts that have since come to be called enzymes. E) inventing mass spectrometry which is commonly used to determine the size and composition of individual proteins.
Answer the following questions true (T) or false (F)
1. Human herpesvirus 4 is better known as cytomegalovirus. 2. Both bubonic and pneumonic plague cause the formation of buboes and tissue necrosis of the extremities. 3. Cytomegalovirus may be latent for years and reactivate when immunosuppression occurs.
Define "pathogen-associated molecular patterns" (PAMPs) and explain why they are crucial to our body's immune response against pathogens? Limit your answer to two sentences
What will be an ideal response?
At what age should screening for colorectal cancer begin?
A. in the 60s B. in the 50s C. in the 40s D. in the 20s E. in the 30s