70% isopropyl alcohol is a mixture of an alcohol with water that is used to clean cuts and scrapes. Properties Isopropyl Alcohol Water Color colorless liquid colorless liquid Density 0.8 g/cm3 1.0 g/cm3 Boiling Point 82.5°C 100°C Solubility mixes with water mixes with alcohol Based on the table above, which property would be the best to use to separate the mixture of isopropyl alcohol and water?

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?

Restriction enzymes are used in making recombinant dna. describe the role restriction enzymes perform when constructing recombinant dna.

Which of the following is the best definition of a eukaryota? a. a one-celled organism that does not have a membrane-bound nucleus b. a one-celled organism that does not have a cell wall c. an organism whose cells each contain a membrane-bound nucleus d. an organism whose cells each have a cell wall