1. an animal cell has a 2% salt concentration. it is placed into a solution with a 0.05% salt concentration. what would happen to the animal cell? a: water will move into the animal cell causing it to shrivel b: water will move into the animal cell causing it to swell and burst c: water will move out of the animal cell causing it to swell and burst d: water will move out of the animal cell causing it to shrivel

water will move out of the animal cell causing it to swell and burst  (Option C)

Explanation:

When a cell is immersed into a salty solution, the osmotic pressure generated by concentration differences of salt, will make the salt come in due to cell self-protection mechanism of the cell and water will come out, eventually the cell can burst .But since the animal cells has a higher concentration of salt and the solution has a lower concentration osmosis will take place and salt will move from higher salt concentration to lower.

"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."

the answer is c. it will give up it's valence electron to the other atom.