The p53 protein functions as a
carcinogen
positive regulator of the cell cycle
tumor suppressor
proto-oncogene
tumor-suppressor
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Which of the following is true of both neurotransmitters and hormones?
A. They are both involved in paracrine signaling. B. They both interact with receptors inside or on the surface of target cells. C. They are both produced in glands. D. They both travel through the bloodstream to target cells. E. They both influence the activity of multiple organs simultaneously.
Plant surfaces are covered and protected by
a. ground tissue. b. protoderm. c. vascular tissue. d. meristem. e. dermal tissue.
Which term describes any mechanism that compensates for differences in the number of copies of genes due to the different chromosome constitutions of males and females?
What will be an ideal response?
The most common form of reproduction among prokaryotes is (budding/binary fission/snapping division).
Fill in the blank(s) with the appropriate word(s).