In which of the following would there be the greatest need for osmoregulation?
A) an animal connective tissue cell bathed in isotonic body fluid
B) a salmon moving from a river into an ocean
C) a red blood cell surrounded by plasma
D) a plant being grown hydroponically in a watery mixture of designated nutrients
B
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Which one of the following species-species interactions is most likely to be mutually beneficial?
A. human and yeast B. leaf-cutter ant and tropical plant C. two plant species sharing the same resources D. honeybee and apple flower E. all of the above interactions are equally likely to be mutually beneficial.
In mitosis, chromatids separate and move to the center of the cell during ____________________
Fill in the blank(s) with correct word
The importance of phage-mediated lateral gene transfer by virioplankton was illustrated by the fact that cyanophages thought to infect Synechococcus and Prochlorococcus carry the structural gene for ________.
A. a photosynthetic reaction center protein B. phycocyanin production C. nitrogenase D. All of the choices are correct.
What area of the body will contain the smallest population of microorganisms?
a. Anal opening b. Fingertips c. Mouth d. Nose e. Eyes