Which lineage includes living members that are jawless vertebrates called lampreys, which are mostly parasitic as adults?
a. Urochordata
b. Cephalochordata
c. Petromyzontoidea
d. Placodermi
Answer: c. Petromyzontoidea
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Which of the following reactions is a hydrolysis reaction?
A. A + B + H2O ® C B. A ® B + C+ H2O C. A + B ® C + H2O D. A + H2O ® B + C Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you know about hydrolysis reactions? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? 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?
Restriction enzymes are
A. proteases. B. lipases. C. endonucleases. D. exonucleases.
Mesoderm gives rise to all of the following
except
a. the muscular system. b. the circulatory system. c. the reproductive system. d. the nervous system. e. the excretory system.
A single atom of carbon may form up to
__________ covalent bonds with other atoms. a. 2 b. 3 c. 4 d. 5 e. 6