(Question)
Q: Which state of matter has the lowest density? 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? Choices: - binary - unary - ternary - quaternary A:
(Answer)
quaternary

(Question)
Q: Quarks also have a different type of charge, called what? Choices: - contrast charge - pure charge - spontaneous charge - color charge A:
(Answer)
color charge