Which would be TRUE of comparing the DNA fingerprints from hair samples of identical twins?
A. Some bands match.
B. No bands match.
C. Every band matches.
D. Exactly 50% of the bands match.
E. Most bands match.
C. Every band matches.
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Which of the following hormones increases blood pressure by directly stimulating the distal convoluted tubule and collecting ducts to take up more water and salts?
A. aldosterone B. angiotensin II C. antiotensin I D. renin E. antidiuretic hormone
If the age-specific fertility rate is such that 100 females of age class x would produce 50 offspring, what is the contribution of age class x to the overall population growth rate?
A. 0.75 B. 0.5 C. 2 D. 50 E. cannot be calculated with this information.
This portion of the cell responds to red light photons only
a. outer segment of rod
b. outer segment of cone c. inner segment of rod d. inner segment of cone e. synaptic terminal of rod or cone
Which event occurs in lung blood?
a. Plasma HCO3- enters erythrocytes. b. In erythrocytes, carbonic anhydrase converts CO2 and H2O into HCO3- and H+. c. Free H+ binds to hemoglobin. d. CO2 binds to hemoglobin.