Gabe's wife wakes him from his peaceful slumber to tell him she heard a noise. as he slowly gets up to investigate, his heart begins to race, his mouth is dry, and he begins to sweat. clearly his nervous system has been activated.

Clearly his SYMPATHETIC nervous system has been activated.

Explanation:

The effects of the sympathetic nervous system dominate in times of EMERGENCY or STRESS. And its effects include:

- dilation of pupils to help Gabe see sharply as he investigate

- inhibition of saliva secretion as his mouth turns dry

- acceleration of heartbeat due to fear

- stimulation of sweat glands to produce sweat.

All these show clearly that Gabe's SYMPATHETIC nervous system has been activated.

there are mainly three domains in biological classification namely; archaea, bacteria, and eukarya.

archaea includes all the prokaryotic cells which are characterized by their lipid membranes. they have branched hydrocarbon which is attached to glycerol through an ether linkage.

bacteria includes all the prokaryotic cells, the cell membrane of which are made up of the unbranched fatty acid chain. in addition, they are attached to glycerol through an ester bond.

eukarya includes all the eukaryotic cells, that is, the cells contain a nucleus and other membrane-bound cell organelles.

they can be autotrophic as well as heterotrophic, unicellular as well as multicellular

they include kingdoms like protista, plantae, animalia, fungi et cetera.

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explanation:

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."