HSCI 304 Lecture 5: week 5 review pesticides
16 Jan 2019
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Asbestos is useful but can cause cancer (prefer it not affect living things: pesticides are hazardous substances intentionally added to the environment, released as unwanted byproduct of another activity, ex. Impairs normal function of ion channels in neuron cell membranes: ex. Ddt (commonly used; has acute effects such as dizziness and hyper- sensitivity to stimuli: organophosphorous (op, responsible for a majority of pesticide poisoning and death (mild to severe, mode of action: Inhibits enzyme ache at neuronal synaptic site accumulates ach: motor neurons stimulate muscle releasing ach (muscle twitching and paralysis, ex. Sarin: toxic compound developed as pesticide with harmful effects: carbamate, similar to op; inhibits enzyme ache at neuronal synaptic site accumulate. Impairment opening and closing of ion channels in nerve cells. In the context of pesticides, discuss the advantages and disadvantages of environmental persistence. Prevent crops from being eaten by rodents/insects that reduce food quality.
