Which of the following describes the function of the nephron?
a. generating urine
b. increasing glucose levels
c. controlling body temperature
d. transferring heat to veins
a. generating urine
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If you were to use antibodies that were chemically bonded to a stain in order to visualize the expression pattern of a protein in a fixed tissue, what experimental techniques and equipment would be applicable?
A. antibody interference assay, bright-field microscopy B. immunohistochemistry, dark-field microscopy C. immunohistochemistry, bright-field microscopy D. DAPI or Hoechst stains, fluorescence microscopy
Which of the following describes the function of veins in the body?
a. They are the sites for the exchange of nutrients, waste, and oxygen with tissues at the cellular level. b. They bring blood high in oxygen from the lungs to the rest of the body. c. They pump blood to the lungs for reoxygenation. d. They bring blood high in carbon dioxide back to the heart.
Human activities are responsible for an increase in the amount of atmospheric carbon dioxide. Many feel that the buildup of this gas is at least partly responsible for the greenhouse effect and global warming. Increased carbon dioxide may actually be a benefit to some plants since they need carbon dioxide for carbon-fixation. How will the greenhouse effect influence the biosphere? Even though
experiments have shown increased carbon dioxide to be a boon for test plants, some scientists are still concerned about this phenomenon. Why? What will be an ideal response?
Nitrogen-fixing bacteria in the roots of soybeans help provide a source of nitrogen to the plants, and in exchange, the bacteria obtain food from the plants. Which type of interaction is this?
A. mutualism B. commensalism C. parasitism D. predation E. herbivory