Which of the Following Is a Mixture

question 78

Multiple Choice

Which of the following is a mixture?

• A)a homogeneous solution of sugar dissolved in water
• B)bromine (a liquid with the formula Br₂)
• C)sucrose (table sugar: the formula is C₁₂H₂₂O₁₁)
• D)graphite (an allotrope of carbon)
• E)calcium oxide (CaO or lime)

---

Definitions:

Lysosome

A membrane-bound cell organelle that contains digestive enzymes and breaks down excess or worn-out cell parts, food particles, and invading viruses or bacteria.

Active Transport

The passage of molecules over a cell's membrane, moving from an area of decreased concentration to an area of increased concentration, an endeavor that utilizes energy.

Concentration Gradient

A difference in the concentration of a substance across a distance, which can drive diffusion of particles from an area of high concentration to an area of lower concentration.

Carrier Molecules

Proteins that assist in moving substances through a cell membrane by altering their form or attaching to the substance.