Whose findings of evolution by natural selection were presented with those of Darwin?
a. Alfred Wallace
b. Carolus Linnaeus
c. Charles Lyell
d. Gregor Mendel
e. Thomas Malthus
a
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Telomeres, tandem repeat sequences at the ends of chromosomes, generally get shorter after every cell division. The resulting mechanism involves a protein called p53, which ________
A) puts the cell into a permanently nondividing state B) causes the cell to enter cell senescence C) may induce the cell to undergo programmed cell death D) All of the above.
Which of the following is true of steroid receptors?
A) The receptor molecules are themselves lipids or glycolipids. B) The receptor may be inside the nucleus of a target cell. C) The unbound steroid receptors are quickly recycled by lysosomes. D) Steroid receptors are typically bound to the external surface of the nuclear membrane.
The substrate(s) in the Eosin Methylene Blue Agar is (are)
A. Lactose B. Sucrose C. Glucose D. Lactose & Sucrose E. Glucose & Lactose
The Pacinian corpuscle is used in detecting ____.
A. sound B. hard pressure C. chemicals D. light touch E. chemical differences