Activation energy is not required for nonspontaneous reactions
Indicate whether the statement is true or false.
ANS: F, activation energy; is required
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Which of the following is not true of protists as a group?
a. They are all single-celled. b. They are eukaryotes. c. They range in size from microscopic to large multicellular organisms. d. They likely belong to multiple kingdoms.
There are those who claim that the theory of evolution cannot be true because the apes, which are supposed to be closely related to humans, do not likewise share the same large brains, capacity for complicated speech, and tool-making capability. They reason that if these features are generally beneficial, then the apes should have evolved them as well. Which of these provides the best argument against this misconception?
A) Advantageous alleles do not arise on demand. B) A population?s evolution is limited by historical constraints. C) Adaptations are often compromises. D) Evolution can be influenced by environmental change.
The ________ are unusual creatures that stream along in an oozing mass of slime.
A. plasmodial slime molds B. ciliates C. cellular slime molds D. water molds
No new settlers arrive, and nobody leaves the island. After a few generations, the percentage of blue-eyed individuals increases from the original zero to 25 percent. This is probably due to which of the following factors?
A) genetic drift B) gene flow C) mutation