Today, Australia, Antarctica, and South America represent fragments of ____
a. Australasia
b. Laurasia
c. Gondwana
d. Eurasia
e. Amerasia
ANSWER: c
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You observe two populations of chimpanzees using sticks to dig termites out from nests for food. One population uses long sticks; the second population uses short sticks
Which of the following observations would NOT support the hypothesis that the choice of stick length is a learned behavior? A. There are equal numbers of short and long sticks in the environment of each population. B. The population using long sticks has mostly long sticks in its environment. C. The chimpanzees using short sticks have obtained them by breaking long sticks. D. Young chimpanzees in both populations start out using sticks of many different sizes. E. Individuals that don't use the common stick length for that population catch fewer termites.
Complement-mediated lysis is achieved by
A. entry of lysozyme into Gram-positive bacteria and entry of lysozyme into Gram-negative bacteria. B. entry of lysozyme into Gram-negative bacteria. C. entry of lysozyme into Gram-positive bacteria. D. None of the choices are correct.
Humans have __________ different types of autosomes.
A. 46 B. 44 C. 23 D. 22 E. 11
To answer questions 76–80 refer to the four items listed below
a. cDNA b. restriction enzyme c. reverse transcriptase d. gene library M 76. This is from a viral source and catalyzes reactions to construct DNA strands from mRNA. M 77. This is any DNA made from mRNA transcripts. M 78. This is a nuclease whose only function is to cut apart foreign DNA entering a cell. M 79. These are collections of host cells that house cloned DNA. M 80. This is an enzyme used to produce cDNA.