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A chain of spherical bacteria is called ...

A chain of spherical bacteria is called streptococci. When spherical cocci are found in grape like irregular aggregates, they are called

A

staphylococci

B

sarcina

C

palisade

D

streptobacilli

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Question:** The question asks about the classification of spherical bacteria when they are found in grape-like irregular aggregates. 2. **Identifying the Type of Bacteria:** The term "spherical bacteria" refers to bacteria that have a round shape, known as cocci. When these cocci are arranged in chains, they are referred to as "streptococci." 3. **Recognizing the Arrangement:** The question specifies that the cocci are found in "grape-like irregular aggregates." This description indicates a different arrangement than the linear chains of streptococci. 4. **Identifying the Correct Term:** The arrangement of cocci in clusters that resemble grapes is known as "staphylococci." This term is derived from the Greek word "staphyle," meaning bunch of grapes. 5. **Eliminating Other Options:** - **Sarcina:** This refers to a specific arrangement of cocci in cubes or packets, not grape-like clusters. - **Palisade:** This refers to a specific arrangement of rod-shaped bacteria, not cocci. - **Streptobacilli:** This term refers to rod-shaped bacteria arranged in chains, which is not applicable here. 6. **Conclusion:** Based on the arrangement described in the question, the correct answer is "staphylococci." **Final Answer:** Staphylococci ---
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Knowledge Check

  • On the primitive earth, polymers such as proteins and nucleic acids in aqueous suspension formed the spherical aggregates. These are called.

    A
    primitosomes
    B
    liposomes
    C
    primitogens
    D
    coacervates.

  • The masses of bacteria held together by slime and fungal filaments to form mesh-like structures are called as

    A
    primary sludge
    B
    floces
    C
    activated sludge
    D
    anaerobic sludge

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