Which type of bond makes water liquid?
a. ionic
b. covalent
c. polar covalent
d. nonpolar covalent
e. hydrogen
E
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Breathing is primarily regulated by _____
A) erythropoietin levels in the blood B) the concentration of red blood cells C) hemoglobin levels in the blood D) carbon dioxide concentration and pH-level sensors E) the lungs and the larynx
While conducting an experiment, you realize that a competitive inhibitor was interfering with your reaction. How could you overcome this problem?
A. Add a non-competitive inhibitor to the reaction. B. Add a cofactor to the reaction. C. Increase the concentration of the correct substrate in the reaction. D. Add an allosteric activator to the reaction. 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 enzymes and competitive inhibition? What other information is related to the question? Choose Answer Do you have all the information needed to answer the question? 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?
Cells are treated with a drug that blocks purine synthesis. Which bases would not be made in those treated cells?
A. cytosine, thymine, and uracil B. adenine and guanine C. adenine and thymine D. cytosine and guanine
All fungi are __________ that secrete digestive
enzymes on organic matter and absorb released nutrients. Fill in the blank(s) with the appropriate word(s).