When the rodenticide warfarin was first introduced, rats were very susceptible to it. The development of resistance to
warfarin by rats was the result of
a. special creation.
b. natural selection of individuals that expressed genes for resistance.
c. the high biotic potential of insects.
d. a naturally occurring example of inheritance of acquired characteristics.
e. mutation induced by DDT.
ANSWER: b
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Santhi Soundarajan won a silver metal in the 2006
Pan Asian Games. Why did she later have her metals recalled? a. She was a cross-dresser who pretended to be female. b. She was a female who had a Y chromosome without knowing about the genetic condition. c. She used performance enhancing drugs that altered her genetic structure. d. She was genetically altered at birth to create a faster runner. e. Her government gave her a sex change in order to hide the fact that she was really a male.
Which of the following is least likely to be part of a cell membrane?
A) peptidoglycans B) phospholipids C) glycoproteins D) transport proteins E) enzymes
An example of a(n) anabolic reaction is the splitting of a polysaccharide into monosaccharides
__________________ Indicate whether the statement is true or false.
The last common ancestor shared by humans and chimpanzees lived about
A) 6,000-8,000 years ago. B) 5-7 million years ago. C) 25-40 million years ago. D) 1.5-2.5 billion years ago.