Two different nucleic acids can ________ by annealing at their complementary sites.
A. covalently bond
B. hybridize
C. ligate
D. form a peptide bond
Answer: B
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What kind of pathogen would retain its ability to cause infections after being treated with powerful proteolytic chemicals that would destroy all proteinaceous material?
A. A virus B. A prion C. A fungus D. A bacterium E. A viroid Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about viroids? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which of the following lists the terms from simplest to most complex?
a. cells, organs, tissues, organ systems, organism b. organs, organ system, organism, cells, tissues c. tissues, organs, organ systems, organism, cells d. cells, tissues, organs, organ systems, organism
The sympathetic nervous system:a
is involved in restoring energy to the body. b. directs quiet, calm activities. c. is the only system that innervates the heart. d. is activated when there is a startling situation. e. is part of the somatic division.
A bacterial ________ is the nontranscribed region of the DNA to which RNA polymerase binds in order to initiate transcription.
A. initiator B. operator C. operon D. promoter