Question

7. Which of the following is a gram-positive eubacterium?
a. Actinomyces
b. Clostridium
C. Rhizobium
d. Clostridium, Actinomyces
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Answer 1

Answer:

actinomyces, clostridium

Answer 2

The gram-positive eubacterium is (d) Clostridium, Actinomyces

Explanation:

1.clostridium, (genus Clostridium), any of a genus of rod-shaped, usually gram-positive bacteria, members of which are found in soil, water, and the intestinal tracts of humans and other animals. Most species grow only in the complete absence of oxygen.

2.Actinomycosis is usually caused by the bacterium called Actinomyces israelii. This is a common organism found in the nose and throat. It normally does not cause disease. Because of the bacteria's normal location in the nose and throat, actinomycosis most commonly affects the face and neck.

3.Eubacteria are prokaryotic microorganisms consisting of a single cell lacking a nucleus and containing DNA is a single circular chromosome. Eubacteria can be either gram-negative or gram-positive, they have economic, agricultural, and medical importance. They include E. coli, Lactobacilli, and Azospirillum.