1. Which of the following is the main topic of the passage?
(A) The characteristics of bacteria (B) How bacteria reproduce
(C) The various functions of bacteria (A) How bacteria contribute to disease
2. Bacteria are measured in
(A) inches (B) centimeters (C) microns (D) millimeters
3. Which of the following is the smallest?
(A) A pinhead (B) A rounded bacterium
(C) A microscope (D) A rod-shaped bacterium
4. According to the passage, someone who examines bacteria using only a microscope that magnifies 100 times would see
(A) tiny dots (B) small "hairs"
(C) large rods (D) detailed structures
5. The relationship between a bacterium and its flagella is most nearly analogous to which of the following?
(A) A rider jumping on a horse's back (B) A ball being hit by a bat
(C) A boat powered by a motor (D) A door closed by a gust of wind
6. In line 16, the author compares water to molasses, in order to introduce which of the following topics?
(A) The bacterial content of different liquids
(B) What happens when bacteria are added to molasses
(C) The molecular structures of different chemicals
(D) How difficult it is for bacteria to move through water