A(n) ____ includes the community and the nonliving environmental factors with which it interacts
a. community
b. biosphere
c. ecosystem
d. multicellular organism
e. earth
C
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Given what you now know, what information is most likely to produce the correct answer?
What will be an ideal response?
Which protein is needed to lay down a segment of RNA complementary to the DNA before replication can begin?
A) RNA polymerase II B) primase C) helicase D) topoisomerase E) ligase
Four of the five outcomes listed below are related to
the accumulation of oxygen in the atmosphere. Select the exception. a. Further chemical origin of living cells stopped. b. Chemical attacks by oxygen radicals stopped. c. Aerobic respiration evolved. d. With few exceptions, complex organic compounds could no longer form. e. Some cells detoxified oxygen by using it to accept electrons.
Large evolutionary changes that result in the placement of related organisms into different genera or higher-level taxa occur via the process of ________
A) speciation B) macroevolution C) microevolution D) independent evolution E) evolutionary differentiation