Microbes that cause harm to living things are known as:
Ans: Pathogen
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In the formula, dN/dt = rN(K-N)/K, the rate of population growth approaches zero as
A. carrying capacity approaches zero. B. the age-specific fertility rate approaches zero. C. the per capita growth rate declines. D. the population size approaches the carrying capacity. E. carrying capacity declines with increasing population size.
Molecules called uncouplers allow protons to cross the inner mitochondrial membrane, which decreases the proton gradient potential. Consequently, ATP production in the mitochondria would
A. not change, because protons cross the outer mitochondrial membrane to produce ATP. B. increase, because this would spontaneously establish a proton gradient for powering ATP synthase. C. decrease, because the proton gradient, for powering ATP synthase, would dissipate. D. increase, because this would make more oxygen available in the mitochondrial matrix. E. decrease, because electrons would not be able to move through the electron transport chain.
Several types of evidence have linked bipolar disorder to genes. Which one of the following is NOT
one of these types of evidence? A. Biochemical studies B. Twin studies C. Adoption studies D. Association studies E. Studies involving degrees of relatedness
Grand Rapids variety of lettuce produces seeds that will not germinate unless they are exposed to light. Phytochrome is also involved in that exposure to red light stimulates germination and far-red light inhibits germination. However, the effect of
red light can be reversed by an immediate exposure to far-red light--and vice versa. You design an experiment in which you expose seeds of Grand Rapids lettuce first to red light, then immediately to far-red light, and then immediately to red light again. Would these seeds germinate? Use your knowledge of the phytochrome molecule to explain your reasoning. What if the seeds were exposed first to red light, then immediately to far-red light, then immediately to red light again, and then immediately to far-red light again?Grand Rapids variety of lettuce produces seeds that will not germinate unless they are exposed to light. Phytochrome is also involved in that exposure to red light stimulates germination and far-red light inhibits germination. However, the effect of red light can be reversed by an immediate exposure to far-red light--and vice versa. You design an experiment in which you expose seeds of Grand Rapids lettuce first to red light, then immediately to far-red light, and then immediately to red light again. Would these seeds germinate? Use your knowledge of the phytochrome molecule to explain your reasoning. What if the seeds were exposed first to red light, then immediately to far-red light, then immediately to red light again, and then immediately to far-red light again? What will be an ideal response?