A protein containing more than one polypeptide chain exhibits the level of protein structure.

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

Awoman whose sister tested positive for a specific mutation in the brca1 gene, which increases the risk for breast and ovarian cancer, is found not to have that mutation but does have a mutation of unknown significance near the known mutation site. how should this woman be counseled? select one: a. she should be informed that her risk for breast cancer is greater than the general population but not as great as her sister’s risk. b. she should be informed that because she does not have the mutation, her risk for breast cancer is not greater than that of the general population. c. she should be informed of her gene mutation status and be presented with all the available prophylaxis options and reconstruction options. d. she should be informed that she does not have the specific mutation but that because another mutation is present she should be vigilant about screening

Why is water called the universal solvent?   a. water is a polar substance that dissolves nonpolar substances.  b. water can act as a solvent in many different solutions.  c. water is a nonpolar substance that dissolves polar substances.  d. water can act as a solute in many different solutions.this is the correct answer water can act as a solvent in many different solutions.