Which type of intravenous solution would be recommended for a patient who is dehydrated?
a) an isotonic solution b) a hypotonic solution c) a hypertonic solution
a) an isotonic solution
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Which of the following is likely NOT a common feature shared among all living organisms?
A. All living organisms use energy. B. All living organisms maintain organization. C. All living organisms have evolved over the course of many generations. D. All living organisms maintain some level of homeostasis. E. All living organisms are composed of similar structures.
What happens when the concentrations of a solute that can freely diffuse across a membrane are equal inside and
outside the cell?
a. The osmotic pressure is equilibrated on both sides of the membrane. b. Solute molecules no longer diffuse across the membrane. c. Solute molecules continue to diffuse across the membrane. d. Transporter proteins are inhibited to prevent movement across the membrane. e. Channel proteins are gated to prevent movement across the membrane.
In the Hershey and Chase experiment, phage-infected bacteria and viral progeny were radioactive following bacterial
infection with 32P-labeled viruses. Why?
a. Bacteria had incorporated radioactive proteins into their DNA. b. Bacteria and viral progeny had incorporated 32P into their DNA. c. Viral progeny had used the 32P to build new viral proteins. d. Bacteria had incorporated radioactive proteins into their cell membranes. e. 32P was left outside the cell during viral infection.
In meiosis, the separated sister chromatids move to opposite poles of the cell during
A. anaphase II. B. anaphase I. C. telophase I. D. metaphase I. E. metaphase II.