Refer to the biochemistry in focus section of your text for this chapter to answer this question. sarin inhibits acetylcholinesterase by covalently modifying the enzyme active site. pyridostigmine is a competitive inhibitor of acetylcholinesterase and can serve as an antidote for sarin poisoning. how does pyridostigmine prevent sarin from inhibiting acetylcholinesterase? pyridostigmine binds to sarin and prevents it from binding to and modifying the enzyme active site. pyridostigmine reverses the covalent modification caused by sarin in the acetylcholinesterase active site.

For the strategies below, decide whether they are best described as demand-side solutions or supply-side solutions to meeting human needs for fresh water. remember that a demand-side solution reduces demand for fresh water, whereas a supply-side solution increases the supply of fresh water. (a) damming a river to create a reservoir (b) desalinating seawater (c) a nation invading a neighboring country to access their rivers (d) raising water prices for consumers and businesses (e) providing tax breaks for companies that use less water (f) replacing inefficient irrigation with more-efficient drip irrigation to grow crops (g) requiring low-flow showerheads in all new homes

Which process in respiration happens first? a)pyruvate processing b)electron transport chain c)krebs cycle d)glycolysis

14. which of the following codons code for threonine? a. ucg b. ugu c. cga d. aca