Which of the Following Is Not a Gram-Negative Rod

question 13

Multiple Choice

Which of the following is not a Gram-negative rod?

• A)Vibrio cholerae
• B)Clostridium perfringens
• C)Helicobacter pylori
• D)Campylobacter jejuni

---

Definitions:

Capillary Bed

A capillary bed is a network of capillaries, which are small blood vessels, where exchange of water, oxygen, carbon dioxide, and many other nutrient and waste chemical substances occur between blood and surrounding tissues.

Sinusoid

Terminal blood vessel having a larger diameter than an ordinary capillary.

Precapillary Sphincter

Smooth muscle sphincter that regulates blood flow through a capillary.

Relaxation

The state of being free from tension and anxiety, or the act of making something less tight.