bio 150 final exam Complete Questions & Answers(RATED A+)

passive (simple) diffusion - ANSWER -from high to low concentration of solute -no energy required -no membrane protein required if cell is placed in surrounding solution with higher solute concentration then inside the cell, the solution is ____ relative to the cell - ANSWER hypertonic If cell is placed in surrounding solution with lower solute concentration than inside cell, the solution is _____ relative to the cell - ANSWER hypotonic concentrations same inside and outside - ANSWER isotonic constitutive responses - ANSWER always present, typically an adaptive response to consistent selective pressures inducible responses - ANSWER short-term or reversible responses activated by environmental stimuli Which of the following is an inducible response? A) A pufferfish has toxins that kill predators that eat it B) A puffer fish has spines that hurt predators that eat it C) A puffer fish "blows ups" in response to the presence of a predator Inducible (they only blow up when they receive a signal to do so) D) Crabs have a hard exoskeleton that has evolved to protect them from predators E) Male peacocks have brightly colored feathers that signal their fitness to females. These feathers are an induced response. - ANSWER C Under which conditions would an inducible response be selected FOR? A. Energetic costs of the response outweigh the energetic benefits B. Energetic benefits of the response outweigh energetic benefits C. Fitness related costs of the response outweigh the fitness related benefits D. Fitness related benefits of the response outweigh the fitness related costs - ANSWER D T or F: Responses may be selected for in one environment but against in another - ANSWER T T or F: Temporary traits that arise from responses are adaptations that can be passed