Darwin's theory of natural selection supported the physical adaptation theory
Indicate whether the statement is true or false
FALSE
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Consider a living plant cell in a living leaf that has a higher water potential than the fluids surrounding
the cell. In such a situation there should be
a. a net flow of water out of the cell. b. gain of water by the cell only if the cell's pressure potential is high enough. c. no net flow of water into or out of the cell. d. a net flow of water into the cell. e. gain of water by the cell only if the cell's pressure potential is low enough.
Human MN blood types illustrate the Hardy Weinberg principle because these blood type antigens are
not subject to inheritance. ______________ Indicate whether the statement is true or false.
In eukaryotes, the 3? end of the mRNA is important in the initiation of translation because
A) it contains Kozak sequences that aid in initiation. B) translation occurs in the 3? to 5? direction. C) eIF4A is attached to the 3? end and removes any secondary structure that might prevent translation. D) the 3? poly(A) tail and PABP bind initiation factor eIF4G, stabilizing the 5? end of the mRNA. E) it contains Kozak sequences that aid in initiation of translation in the 3? to 5? direction.
A benign tumor differs from a malignant tumor in that a benign tumor
A) is cancerous. B) spreads from the original site. C) does not metastasize. D) never causes health problems.