A truck driver is transporting a load of unripened bananas in an air-tight vehicle, and decides to stop and eat an apple
He also checks on his cargo, opening the back of his truck and
walking around the unripened bananasâ€"all while still snacking on his apple. When he
makes his final delivery, he opens the back of his truck to find that all of his bananas have
ripened. Why? Select all correct choices.
A. Opening the back of the truck exposed the
bananas to oxygen.
B. Exposure of the bananas to the apple (and
its ethylene) instigated their ripening.
C. The bananas would naturally ripen over
time, even in an air-tight environment.
D. Opening the back of the truck exposed the
bananas to light of red wavelengths.
A,B
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Food chains are sometimes short because _____
A) only a single species of herbivore feeds on each plant species B) local extinction of a species causes extinction of the other species in its food chain C) most of the energy in a trophic level is lost as it passes to the next higher level D) predator species tend to be less diverse and less abundant than prey species E) most producers are inedible
Club moss sporangia form on specialized leaves called ____ that occur near stem tips
a. cladophylls b. archegonia c. thalli d. antheridia e. sporophylls
What is a 15-meter tall tree fern?
A. A gametophyte B. A sporophyte C. Haploid D. Produced by meiosis
Is the resting membrane potential of a neuron closer to the equilibrium potential for K+ or Na+?
A. Na+ B. K+ C. It is an average of the two.