The process by which producers harness electromagnetic energy and convert it into chemical energy is cellular
respiration.
Indicate whether the statement is true or false.
False - photosynthesis
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Pufferfish (Fugu) are a delicacy in Japan, but must be cleaned very carefully as their liver contains tetrodotoxin which blocks voltage-gated Na+ channels. Imagine you are testing for the presence of this toxin using a neuron in a dish. You apply an electrical stimulus to the neuron that should produce an action potential. What will you observe if tetrodotoxin levels are high enough to block the
neuron's voltage-gated Na+ channels? A. The neuron will exhibit a slow depolarization even before the stimulus is applied and then a normal action potential. B. The neuron will exhibit a slow hyperpolarization even before the stimulus is applied. C. The neuron will show a normal resting potential, but not exhibit depolarization when the stimulus is applied. D. The neuron will depolarize and exhibit rapid depolarization, but will not repolarize. E. The neuron will depolarize normally, but then become hyperpolarized such that the membrane potential is much lower than usual.
Which of the following matches of plant
hormone to agricultural application is INCORRECT? a. abscisic acid; becomes active when crops are subjected to drought b. ethylene; permits unripe fruit to be shipped without damage for later ripening at distribution centers c. synthetic auxins; stimulates corn stalks to elongate d. cytokinins; induces apples to ripen e. gibberellins; stimulates roses to bloom
Refer to the accompanying figure. What will occur when an electrical impulse travels along the neuron labeled as 2?
a. The hand will be extended. b. The hand will be withdrawn. c. The fingers will flex. d. The fingers will extend. e. The hand will remain stationary.
Brucella bacteria are considered a potential agent of bioterrorism because
A) they are not susceptible to antibiotics. B) they easily become airborne. C) infection causes a fever. D) it is a endospore-forming organism. E) it causes ulcerating lesions of the skin.