The chronic inflammatory disease ____ is characterized by a red butterfly-shaped rash over the nose and cheeks
a. lymphoma
b. Crohn's disease
c. lymphangitis
d. systemic lupus erythematosus
d
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After spending several days at a high altitude, where oxygen pressure is low, a person will begin to produce more red blood cells, which enhances the ability of blood to carry oxygen to the tissues. What term best describes this type of response?
A. Positive feedback B. Feedforward regulation C. Evolution D. Physiological acclimatization E. Developmental acclimatization
Converted to its active form in the lung capillaries, the hormone ________ stimulates the suprarenal production of aldosterone.
Fill in the blank(s) with the appropriate word(s).
What kind of bond forms during the dehydration synthesis of two amino acids, and which functional groups are involved?
A) A glycosidic bond forms between the amino group of one amino acid and the carboxyl group of the other amino acid. B) A hydrogen bond forms between the hydrogen atom of one amino acid and the oxygen atom of the other amino acid. C) An ionic bond forms between the amino ion of one amino acid and the carboxylic acid of the other amino acid. D) A lipophilic bond forms between the hydrophobic tail of one amino acid and the hydrophilic head of the other amino acid. E) A peptide bond forms between the amino group of one amino acid and the carboxyl group of the other amino acid.
Which of the following transport processes always requires metabolic energy?
A) diffusion B) carrier-mediated transport C) vesicular transport D) freely permeable E) impermeable