The potential energy stored in high-energy bonds is commonly harnessed when the bonds are split by the addition of _______________ in a process called _____________
(a) ATP, phosphorylation.
(b) water, hydrolysis.
(c) hydroxide, hydration.
(d) acetate, acetylation.
(b)
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The myoglobin protein, which carries oxygen in muscle cells, has only the first three levels of protein structure. What can you infer about myoglobin?
A. Myoglobin is made of nucleic acids B. Myoglobin lacks hydrogen bonds C. Myoglobin is made of only one polypeptide chain D. Myoglobin is not helical or pleated
A PET scan can be used to monitor ________ when a person is performing specific _______ tasks
a. brain activity; physical b. glucose activity; physical c. brain activity; mental d. hemoglobin activity; mental e. hemoglobin; physical
For an atom that is NOT an ion, which of the following must be TRUE?
a. the number of electrons equals the number of protons b. the number of protons equals the number of neutrons c. the number of electrons equals the number of neutrons
If you were to bite into a carrot and penetrate the cortex, which of the following tissues would you hit next?
a) periderm b) cambium c) pericycle d) vascular tissue e) endodermis