Which type of hormone releases cyclic AMP as a second messenger?
A. Peptide only
B. Steroid only
C. Protein only
D. Peptide and protein only
E. peptide, steroid, and protein
Answer: D
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In healthy adult humans, normal systolic pressure is ____ mm Hg and normal diastolic pressure is ____ mm Hg
a. 20 to 50; 5 to 20 b. 60 to 80; 90 to 120 c. 90 to 120; 60 to 80 d. 90 to 120; 130 to 150 e. 130 to 150; 90 to 120
Innate immunity begins when
a. triggered by adaptive immunity. b. tissue is damaged. c. white blood cells start dividing. d. complement proteins are released. e. PAMPs are detected
The letter "D" in the above figure represents
a. humerus b. pectoral girdle c. skull d. sternum e. pelvic girdle
How are adjacent nucleotides on a strand of DNA connected to each other?
a. by a hydrophobic interaction b. by a phosphodiester bond c. by a peptide bond d. by a hydrogen bond