Nucleic acids are made up of
A. ribose sugars joined by intermolecular, hydrogen bonds.
B. proteins and sugars joined by polar, covalent, double bonds.
C. nitrogenous bases joined by ionic, disulfide bonds.
D. nucleotides joined by covalent, phosphodiester bonds.
Answer: D
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A sound with a frequency of 12,000 hertz would
A) be very loud. B) be barely audible. C) be high-pitched. D) be low-pitched. E) damage the tympanic membrane.
Adipocytes produce a peptide hormone called ________ that acts on the hypothalamus
A) leptin B) grehlin C) lipase D) glucagon E) adipocin
Shannon just finished finals and is heading home for winter break, excited for all the Holiday activities her family has planned. It was a really stressful week and she just wants to get home to her family and friends. The day after finals Shannon wakes up feeling very sick with a cold, sore throat and upset stomach, probably the flu. Her father says the stress from finals probably caught up with
her and she just needs to rest. What do you think? Is Shannon’s father right? Could stress have caused her to get sick? If not, why not? If so, what mechanisms were at play? What will be an ideal response?
The most medial structure of the ankle and foot is the
A) medial malleolus. B) tendon of extensor hallucis longus muscle. C) tendon of tibialis posterior muscle. D) tendon of the tibialis anterior muscle. E) base of the first metatarsal.