A muscle precursor cell would be considered to be
A. determined.
B. differentiated.
C. induced.
D. pluripotent.
Answer: A
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Answer the following statements true (T) or false (F)
1.The proteins needed to form blood clots are known as clotting factors. 2.The lymphatic system collects fluid that has leaked from blood capillaries, removes bacteria, and returns the cleansed fluid to the blood. 3.If a smoker deliberately held their respiration rate at the same level as a nonsmoker, the slowed diffusion of gas due to smoking-related damage could lead to decreased blood pH. 4.The interaction of blood pH, medulla, and carbon dioxide is an example of homeostasis. 5.The medulla has receptors that monitor H+ concentrations in the cerebrospinal fluid.
Xenotransplantation refers to
a. the substitution of one organ for another. b. the transfer of an organ from one individual to another individual of the same species. c. transplantation of an organ from an individual of one species to an individual of another species. d. transplantation of an organ to augment the function of an otherwise healthy organ. e. none of these.
Support for the succession mechanism of tolerance is found in research on plant communities that shows
A. that plants release toxins that prevent other species from establishing. B. competition-tolerant species colonize first. C. climax communities rarely form. D. succession is determined largely by species that exist in the ground as seeds or old roots. E. succession is random and cannot be predicted by existing species.
Against which organisms are disinfectants effective? Against which type of organism may not be effective? What disinfectant(s) is used in your laboratory?
What will be an ideal response?