Nonheritable gene therapy is performed on ________ cells.
A) germline
B) somatic
C) bacterial
D) gametic
B) somatic
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Which of the following best describes the selective uptake of a specific cargo molecule into the cell through receptor binding and aggregation?
A. pinocytosis B. receptor-mediated endocytosis C. autophagocytosis D. phagocytosis E. receptor-mediated exocytosis
Answer the following statements true (T) or false (F)
1. Humans exert top-down pressures on white-tail deer. 2. Using insects from the original homeland to control invasive weeds is a form of biological control. 3. Resource partitioning enables similar species to coexist in a community. 4. Secondary metabolites can become essential feeding stimulants for some herbivores.
It is important to differentiate white blood cells in a preliminary direct smear because
a. the type of white blood cell present defi-nitively indicates whether or not an infec-tion is bacterial. b. neutrophils are the only white blood cell present during bacterial infections. c. it is not appropriate, because various types of white blood cells are indicative of dif-ferent bacterial infections. d. white blood cells are not noted on prelim-inary direct smear results.
Territorial birds, such as penguins, tend to have which sort of species distribution pattern?
a. random b. clumped c. uniform d. elevated interval