Is hemoglobin built by carbohydrates, lipids, proteins or nucleic acids?

4. how does a phospholipid behave in water? the phosphate head does not mix with water; the fatty acid tails do. the phosphate head and the fatty acid tails mix with water. the phosphate head and the fatty acid tails do not mix with water. the phosphate head mixes with water; the fatty acid tails do not.

An easy way to calculate the amount of energy available at each level is to what?

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?