Public health scientists discover and become concerned about a new strain of RNA virus among farm animals, especially geese and pigs, in the Midwest. Each virion is composed of lipid, helical proteins, and multiple pieces of RNA. This new virus may be a(n)
A) rotavirus.
B) influenza virus.
C) hantavirus.
D) dengue virus.
E) coronavirus.
B
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In humans, where is the tympanic membrane?
a. in the outer ear, adjacent to the pinna b. deep within the middle ear c. between the outer ear and the middle ear's cavity d. adjacent to the stapes e. between the middle ear and inner ear
Trichoplax
a. is a small, flattened, soft-bodied marine animal. b. is placed with sponges on the animal family tree. c. has the smallest genome of all the animals. d. has no mouth but rather uses extracellular digestion and absorption. e. fits all of these descriptions.
The mechanism that regulates the movement of
substances into and out of the cells of the brain is the a. cerebrospinal fluid. b. reticular formation. c. tectum. d. blood-brain barrier. e. brain stem.
Briefly describe three key differences between prokaryote genomes and the genomes of multicellular eukaryotes
What will be an ideal response?