Which of the following statements about communication among bacteria is correct?
A. At lower population density, a higher concentration of signaling molecules is typically observed.
B. Unlike eukaryotes, in bacterial communication no receptor molecule is required.
C. Small peptides can stimulate a DNA uptake response.
D. Cellular communication in bacteria is based on the same principles as communication within multicellular organisms.
C,D
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The change in the chromosomes depicted between the top and the bottom in the figure above
represents a(n) ____.
a. inversion b. duplication c. reciprocal translocation d. deletion e. Philadelphia chromosome
Which tissue type allows the body to detect
and respond to internal and external changes?
a. nervous b. adipose c. epithelial d. connective e. skeletal muscle
Are all species introductions the fault of humans? What will be an ideal response?
Which virus can cross the placenta and affect the fetus, causing spontaneous abortion or serious fetal damage?
a) HIV b) HSV c) HPV d) HBV