AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

THE GENETICS OF VIRUSES AND BACTERIA

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The 3 shapes of bacteria are ____
A
square, rod, round (sphere)
B
rod, round (sphere), spiral
C
spiral, cylinder, crystal
D
rod, disc, cylinder
Explanation: 

Detailed explanation-1: -The three basic shapes of bacteria are Cocci (round), Bacilli (rod), and Spirilla (spiral). When viewed under light microscope, most bacteria appear in variations of three major shapes: the rod (bacillus), the sphere (coccus) and the spiral type (spirillum).

Detailed explanation-2: -The three basic shapes of bacteria are bacillus (rod-shaped), coccus (spherical-shaped), and spirillum (spiral-shaped).

Detailed explanation-3: -Spiral-shaped bacteria occur in one of three forms: vibrio, spirillum, and spirochete (Fig.

Detailed explanation-4: -Bacteria are classified into five groups according to their basic shapes: spherical (cocci), rod (bacilli), spiral (spirilla), comma (vibrios) or corkscrew (spirochaetes).

Detailed explanation-5: -Bacteria are classified according to their shape. The two main groups of bacteria are cocci (spherical-shaped) and bacilli (rod-shaped) (Brooker 2008).

There is 1 question to complete.