Measure of the tendency of water to move across a selectively permeable membrane; visible as an increase in liquid on the side of the membrane with higher solute concentration.
What will be an ideal response?
osmotic pressure
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Foraging bees communicate with other bees in a waggle dance to give information about the food. The important cue in the dance that conveys information about the required flight direction to the food source relative to the hive-sun direction is the
A. angle between the food source and the hive in reference to the sun. B. angle between the waggle run and the vertical axis within the hive. C. angle between the waggle run in reference to the hive-sun angle. D. angle between the waggle run in reference to the direction north from the hive. E. speed of the waggle dance.
The ends of DNA molecules cut by restriction enzymes are "sticky" because
A. the enzymes coat them with protective, complex polysaccharides. B. unless a second enzyme is added, the fragments stick to the restriction enzymes. C. they are single-stranded. D. the enzymes cut each strand of the DNA at different places. E. they are single-stranded and the enzymes cut each strand of the DNA at different places.
Carbohydrates are composed of
A. monosaccharides. B. nucleotides. C. amino acids. D. fatty acids and glycerol.
Which of the following interferes with cell wall synthesis by blocking alanine bridge formation?
A) beta-lactams B) cycloserine C) bacitracin D) vancomycin E) both cycloserine and vancomycin