(Question)
Q: Which state of matter has the lowest density? Read this paragraph and choose the correct option from the provided answers: Gases have much lower densities than liquids and solids. For example, liquid water is over 1000 times more dense than water vapor at STP. Choices: - liquids - fluids - solids - gases A:
(Answer)
gases

(Question)
Q: Hemoglobin, with four polypeptide chains or subunits, is the most frequently cited example of a protein having what kind of structure? Read this paragraph and choose the correct option from the provided answers: Four interactions stabilize the tertiary structure of a protein: (a) ionic bonding, (b) hydrogen bonding, (c) disulfide linkages, and (d) dispersion forces. When a protein contains more than one polypeptide chain, each chain is called asubunit. The arrangement of multiple subunits represents a fourth level of structure, the quaternary structure of a protein. Hemoglobin, with four polypeptide chains or subunits, is the most frequently cited example of a protein having quaternary structure Saylor URL: http://www. saylor. org/books. Choices: - binary - unary - ternary - quaternary A:
(Answer)
quaternary

(Question)
Q: Quarks also have a different type of charge, called what? Read this paragraph and choose the correct option from the provided answers: There are six types of quarks . In ordinary matter, virtually all quarks are of the types called up and down quarks. All quarks have mass, and they have an electric charge of either +2/3 or -1/3. For example, up quarks have a charge of +2/3, and down quarks have a charge of -1/3. Quarks also have a different type of charge, called color charge, although it has nothing to do with the colors that we see. Quarks are never found alone but instead always occur in groups of two or three quarks. Choices: - contrast charge - pure charge - spontaneous charge - color charge A:
(Answer)
color charge