Carpal tunnel syndrome is caused by an inflammation of tendons passing through the carpal tunnel of the wrist. What causes this inflammation and pain?
A) The tendons become stretched out and ultimately tear away from the bone.
B) Certain continuous hand motions cause the tendons to repeatedly rub against bone.
C) The associated muscles are too weak and begin to spasm, leading to inflammation.
D) The muscles eventually fatigue and become swollen, thus swelling the tendon.
B
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A 1,4-glycosidic linkage would refer to which one of the following?
A. hydrogen bonding between carbon 1 and carbon 4 within a monosaccharide B. the covalent bond between the 1' carbon of one nucleotide and the 4' carbon of a second nucleotide C. the covalent bond between amino acid 1 in one protein and amino acid 4 in a second protein D. hydrogen bonding among the four bases in double-stranded DNA E. the covalent bond between carbon 1 of one monosaccharide and carbon 4 of a second monosaccharide
Frogs, birds, rabbits and lizards all have different forelimbs, which makes sense when you consider their different lifestyles. Interestingly, all of their forelimbs share the same set of bones—the ulna, the radius, and the humerus
These same bones are also seen in fossils of the extinct animal Eusthenopteron, which demonstrates common ancestry among these four groups of animals. Hence, these forelimbs are an example of: A. analogies. B. homologies. C. similes. D. homilies.
Gene probes can be labeled for detection with reporter molecules such as ________.
A. radioisotopes B. fluorescent dyes C. enzymes D. All of the choices above can be used.
Peter and Rosemary Grant are known for their work on
A) Tenebrionid beetles. B) marine iguanas. C) Galápagos tortoises. D) Darwin's finches.