Deltavirus (hepatitis D virus) requires co-infection with ________ to produce infectious virions
A) hepatitis A virus
B) hepatitis B virus
C) hepatitis C virus
D) arenaviruses
E) hepatitis E virus
B
You might also like to view...
Answer the following statements true (T) or false (F)
1. When lactose becomes available the genes encoding ?-galactosidase and lactose permease are upregulated in E. coli. 2. Different globin polypeptides are expressed at similar levels during the embryonic and fetal stages of mammalian development. 3. Bacteria can regulate gene expression by controlling the rate at which mRNA is translated into protein. 4. Small effector molecules directly bind the DNA they regulate.
Consumer fears and uncertainty about the safety of cloned milk and meat have prevented these products from being
sold in stores even though the ____________________ has ruled that such food is safe. Fill in the blank(s) with the appropriate word(s).
Give examples of plants in each of the gymnosperm phyla. Differentiate among them with respect to
morphology and reproductive characteristics. Which is the most diverse? Least diverse? What will be an ideal response?
In what way are the somatic motor pathway and the parasympathetic autonomic motor pathway similar?
A. Both innervate the skeletal muscles. B. Both use acetylcholine as a neurotransmitter. C. Both utilize two neurons per message. D. Both are voluntary. E. Both innervate glands and organs.