Carlos visited the desert for the first time and, as he was sweating a lot, bought some distilled water. This seemed to satisfy his thirst very well. Why is the distilled water not the best choice of beverage for Carlos?
What will be an ideal response?
Carlos is losing salts along with the water in the sweat. Distilled water will not help to replace the electrolytes he is losing via sweat. A beverage that contains water and electrolytes would be a much better choice for Carlos.
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If favism—being a heterozygote for specific mutations in the G6PD gene—confers resistance to malaria, where should those mutations be prevalent? ____
What will be an ideal response?
Treatment of eukaryotic cells with bacterial polypeptide actinomycin D will cause:
A. interference with the movement of tRNAs during polypeptide elongation on the ribosome. B. blockage of splicing as mediated by snURP2. C. no change; bacterial proteins will have no impact on the function of eukaryotic cells. D. interference with transcript elongation by RNA polymerase II.
Skin cells, blood cells, and other cell types that are continually replaced arise from:
a. adult stem cells b. embryonic stem cells c. induced pluripotent stem cells d. differentiated cells of the same tissue type e. gamete cells
Integral proteins with carbohydrates (sugars) attached that stick out on the exterior surface of cello membranes help recognize "self" and are called ______________.
a) amino acids b) lipoproteins c) glycoproteins d) monosccharides