Cells that protect the body by engulfing foreign cells or producing antibodies are a. red blood cells b. cilia c. platelets d. white blood cells

Which of the following are energy solutions that release pollution into the air>

Which best describes a rhinovirus? o a. a virus that causes a common cold o b. a protective shell around a virus o c. a tube the comes off a virus o d. a piece of dna transferred by a virus

When a cell is in a solution that has the same concentration of water and solutes as its cytoplasm, the cell is said to be in a(n) solution. a. isotonic b. hypotonic c. hypertonic b. facilitated