If Biuret reagent is added to a solution, and it reacts to produce a pink to purple color, this indicates the presence of ________ in the solution.
A. starch
B. lipids
C. cholesterol
D. glucose
E. protein
Answer: E
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Which of the following transports oxygen-rich blood?
A) pulmonary vein B) pulmonary artery C) pulmonary trunk D) superior vena cava
The transport of amino acids across epithelial membranes requires the ________.
A. Na+/H+ pump B. Na+/K+ pump C. facilitated diffusion D. Ca2+ pump
The upper limb and its girdle are attached rather loosely to the rest of the body. This arrangement
A. results in a disjointed appearance. B. results in a limited range of motion. C. allows a wide range of movements. D. restricts the amount of weight the upper limb can support. E. limits fine coordination of the hands.
At which temperature would the rate of diffusion of dye molecules be the lowest?
A) 25 degrees C B) 10 degrees C C) 95 degrees C D) 5 degrees C