Antibody-mediated immunity is particularly effective against
A) extracellular pathogens.
B) intracellular pathogens.
C) both extra- and intracellular pathogens.
D) None of the answers are correct.
Answer: A
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Examine the pedigree in the figure above. Individuals affected by the genetic condition in question are indicated by
filled squares or circles. Which inheritance pattern is most likely correct for this condition in this family?
a. autosomal dominant b. X-linked recessive c. X-linked dominant d. cytoplasmic inheritance e. autosomal recessive
The most common outcome of the process in Figure 20-1 is no viable gametes. This happens becauseof:a
a low rate of fertilization. b. defective meiosis. c. gametic isolation. d. species incompatibility. e. hybrid inviability.
In three sentences or less, explain why a plant placed in a window grows toward the light. What will be an ideal response?
Once a cell goes through mitosis, the daughter cells go through a finite time of growth and normal cellular functions. What phase of the cell cycle do these processes constitute?
A) interphase B) telophase C) metaphase D) prophase