Which of the following options indicates the size of…

Question

Which of the following options indicates the size of PPLO (Pleuro Pneumonia Like Organisms)?

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Question & Answer (English)

Which of the following options indicates the size of PPLO (Pleuro Pneumonia Like Organisms)?

  1. About $10 \mu m$
  2. About $20 \mu m$
  3. About $0.1 \mu m$ — Correct Answer
  4. About $30 \mu m$
Explanation:

PPLO (Pleuro Pneumonia Like Organisms), also commonly known as Mycoplasma, are distinct because they are the smallest living cells known.

  • Unlike many other organisms, they completely lack a cell wall, which allows them to change shape (pleomorphic).
  • They can survive without oxygen.
  • Their size typically ranges from $0.1 \mu m$ to $0.3 \mu m$.

Therefore, the option stating About $0.1 \mu m$ correctly indicates their size.

प्रश्न एवं उत्तर (हिंदी)

निम्नलिखित में से कौन सा विकल्प PPLO (प्ल्यूरो निमोनिया लाइक ऑर्गेनिज्म) के आकार को दर्शाता है?

  1. लगभग $10 \mu m$
  2. लगभग $20 \mu m$
  3. लगभग $0.1 \mu m$ — सही उत्तर
  4. लगभग $30 \mu m$
स्पष्टीकरण:

PPLO (प्ल्यूरो निमोनिया लाइक ऑर्गेनिज्म), जिन्हें आमतौर पर माइकोप्लाज्मा (Mycoplasma) के रूप में जाना जाता है, सबसे छोटी ज्ञात जीवित कोशिकाएं होती हैं।

  • अन्य जीवों के विपरीत, इनमें कोशिका भित्ति (cell wall) नहीं होती है, जिसके कारण ये अपना आकार बदल सकते हैं।
  • ये बिना ऑक्सीजन के भी जीवित रह सकते हैं।
  • इनका आकार आमतौर पर $0.1 \mu m$ से $0.3 \mu m$ के बीच होता है।

इसलिए, सही विकल्प लगभग $0.1 \mu m$ है।

📚 About this Topic — General Awareness

This multiple choice question is from General Awareness, General Awareness (2024), General Awareness (2024)-6, SSC CGL Tier-1 (PYQs). It has 4 options with a detailed explanation of the correct answer and is available in both English and Hindi (द्विभाषी). Practice more MCQs from General Awareness to strengthen your preparation.

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