A skater gliding on ice will continue to move in the same direction and with the same speed (in the absence of the action of additional forces). This exemplifies which of the following laws?
A. Newton's first law of inertia
B. Newton's second law of acceleration
C. Newton's third law of action/reaction
D. Newton's law of gravitational force
A. Newton's first law of inertia
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Though you are an attentive parent, you lost track of your inquisitive toddler for a few minutes, just long enough for him to wander into the garage and open a package of insecticide that you use to control insects in your garden. You have no idea if any of the poison has been ingested, inhaled, or absorbed through his skin. You take the package away from your child and read under the "caution"
section that it is an anticholinesterase. Given that this poison was made for insects, not humans, should you be worried? Explain your answer. What would happen to the child if he has indeed been affected? Explain which type of synapses could be affected. Propose an antidote (it's OK if you don't remember a specific compound, just describe what type of effect may reverse the effects of the insecticide).
You and your fellow deep-sea scientists have discovered a new form of marine invertebrate, and are anxious to determine the similarities and differences to animals already characterized. Chemical analysis reveals the following concentrations of permeable cations:
Nernst equation: Eion = 61/z × log [ion]out/[ion]in
How many muscle fibers stimulate one somatic motor neuron?
A. 0 B. 1 C. 2 D. 3 E. 4
Each lung consists of a number of segments called
A. bronchopulmonary segments. B. mesothelial segments. C. alveolar segments. D. systemic segments. E. pleural segments.
An antibiotic component of semen produced by the prostate gland is ________.
Fill in the blank(s) with the appropriate word(s).