Patients diagnosed with hypercortisolism may have tumors that secrete _____
A) growth hormone
B) adrenocorticotropic hormone (ACTH)
C) estrogen
D) leptin
Answer: B
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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
Transgenic animals are valuable in the study of human diseases for which of the following reasons?
A. They can manifest the same symptoms as human diseases. B. They can be used to study the development and progress of human diseases. C. They can be used to test drugs on. D. They can be cloned and thus have identical genomes. E. All of these are reasons why transgenic animals are valuable in the study of human diseases.
The best explanation for why the emu, ostrich, and rhea are so similar despite being geographically separated is a. continental drift. b. morphological convergence. c. natural selection. d. gaps in the fossil record. e. adaptation.
What will be an ideal response?
During the Gram stain procedure, a Gram _________ cell will be purple after the addition of Crystal Violet, and clear after the decolorization step.
A) Negative B) Positive