Which describes a covalent bond?
A. A bond between two free radicals
B. The positive side of one molecule is attracted to the negative side of another
C. A bond between water molecules
D. Two atoms share electrons with each other from their outermost shell
E. A bond between two oppositely charged ions
Answer: D
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Satiety would be induced by all of the following EXCEPT ________.
A. cholecystokinin B. ghrelin C. serotonin D. naloxone
The taste sensation that amino acids such as glutamic acid cause is
A. salty. B. sour. C. umami. D. bitter.
What is the term for blood in the urine?
What will be an ideal response?
The phospholipid bilayer in plasma membranes is arranged
1.with the polar heads on the internal and external surfaces.
2.with the polar heads on the internal surfaces only.
3.with the polar heads on the external surfaces only.
4.with the polar heads in the center.
5.with the polar heads distributed randomly.