Respiratory proteins will contain metal ions that will bind to ________ when the oxygen concentration is ________
a. oxygen, low
b. nitrogen, high
c. carbon dioxide, low
d. oxygen, high
e. carbon dioxide, high
d
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Biological magnification of persistent toxins would be greatest in a
A. deer. B. fox. C. polar bear. D. mushroom. E. oak tree. 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 biomagnification? 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?
Of the following specialized procedures, which may be used with the electron microscope?
A) shadowing with gold B) negative staining C) scanning electron microscopy D) freeze fracturing E) all of the above
What color develops when I2KI reacts with starches in a sample?
a. Blue b. Blue-green c. Purple d. Red
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.