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Which of the following measured numbers has two significant figures?  A) 0.2 mL B) 0.002 mL C) 20.0 mL D) 2.0 ×103mL E) 200 cm

A classical concerto differs from a symphony in that it does not have a ______________________________ movement.

The expression of a gene involves two phases, ___________ and translation.

There is more traffic between 8 and 9 in the morning because most people start work at 9. This would be a(n) ________. A) observation B) hypothesis C) experiment D) theory E) all the above

The energy stored in the chemical bonds of a molecule is ________. A) specific heat B) kinetic energy C) potential energy D) work E) a calorie

Which of the following is a unit of mass? A) milliliter B) centimeter C) kilogram D) Celsius E) meter

The number of neutrons in an atom is equal to the ________. A) atomic number B) mass number C) mass number + the atomic number D) mass number – the atomic number E) number of protons

Mercury has a density of 13.6 g/mL. How many milliliters of mercury have a mass of 0.35 kg? A) 0.0257 mL B) 0.026 mL C) 25.7 mL D) 26 mL E) 4760 mL

The synthesis of the growing chain of DNA is carried out by adding nucleotides to the ___ end.

Germanium is an example of a(n) ________. A) metalloid B) alkali metal C) nonmetal D) noble gas E) transition element