If Negri bodies are identified in brain tissue through cytologic means, then the virus is identified as a(n):
a. adenovirus.
b. parvovirus.
c. rabies virus.
d. varicella virus.
C
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What happens when the concentrations of a solute that can freely diffuse across a membrane are equal inside and
outside the cell?
a. The osmotic pressure is equilibrated on both sides of the membrane. b. Solute molecules no longer diffuse across the membrane. c. Solute molecules continue to diffuse across the membrane. d. Transporter proteins are inhibited to prevent movement across the membrane. e. Channel proteins are gated to prevent movement across the membrane.
Helical and icosahedral are terms used to describe the shape of a viral ________.
A. capsomere B. envelope C. spike D. core E. capsid
Ovulation is triggered primarily by
a. high levels of LH. b. low levels of FSH. c. high levels of chorionic gonadotropin. d. high levels of estrogen. e. high levels of progesterone.
Cell autonomous genes affect only those cells in which they are expressed. Which group of early developmental genes are not cell autonomous?
What will be an ideal response?