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Kerala DHSE Plus One Cell: The Unit of Life — practice questions — page 2

Explore 58 free Cell: The Unit of Life questions in Kerala DHSE Plus One Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Cell: The Unit of Life questions and exercises with answers

Showing questions 31–58 of 58.

Eukaryotic ribosomes are typically:Read the answer and worked solution →Cilia and flagella exhibit the characteristic '9 + 2' arrangement of:Read the answer and worked solution →Match each cell organelle to its function.Read the answer and worked solution →NEET · Biology · Tap the OrganellesRead the answer and worked solution →NEET · Biology · Organelle ↔ FunctionRead the answer and worked solution →NEETUG · Biology · Spot the Error — Cell BiologyRead the answer and worked solution →NEET · Biology · Cell Theory — Spot the ErrorRead the answer and worked solution →NEET · Biology · True or False — Cell BiologyRead the answer and worked solution →Organelle word huntRead the answer and worked solution →Deeper cell word huntRead the answer and worked solution →Match the organelle familyRead the answer and worked solution →Plant, animal or bothRead the answer and worked solution →Run to the right organelleRead the answer and worked solution →Plant-only gate runRead the answer and worked solution →Slice the endomembrane systemRead the answer and worked solution →Slice the nucleus partsRead the answer and worked solution →Plant or animal expressRead the answer and worked solution →Chloroplast or chromoplastRead the answer and worked solution →Build up from the nucleolusRead the answer and worked solution →Cell organelle bingoRead the answer and worked solution →Catch the endomembrane systemRead the answer and worked solution →Sort the falling structuresRead the answer and worked solution →Plant cell, animal cell, or bothRead the answer and worked solution →Knock out the cell mythsRead the answer and worked solution →Organelle and its jobRead the answer and worked solution →Light and dark reactionsRead the answer and worked solution →Cell facts, true or falseRead the answer and worked solution →Odd one out in the cellRead the answer and worked solution →

Worked practice questions

Eukaryotic ribosomes are typically:

  1. 50S (only small subunit, in bacteria)
  2. 70S (prokaryotic, smaller cells)
  3. 80S (in cytoplasm, made of 60S + 40S)
  4. 100S (a hypothetical large form)
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Correct answer: C. 80S (in cytoplasm, made of 60S + 40S)

**Eukaryotic ribosomes:** 80S (composed of 60S large + 40S small subunits). **Prokaryotic:** 70S (50S + 30S). **Mitochondrial + chloroplast ribosomes:** 70S (like bacteria; supports endosymbiotic origin).

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Cilia and flagella exhibit the characteristic '9 + 2' arrangement of:

  1. Microfilaments (actin protein, thinnest)
  2. Microtubules (tubulin protein, hollow cylindrical)
  3. Intermediate filaments (keratin family)
  4. Centriole triplets (9 + 0 arrangement)
Show answer and solution

Correct answer: B. Microtubules (tubulin protein, hollow cylindrical)

**Cilia + flagella:** 9 OUTER PAIRS of microtubules + 2 CENTRAL microtubules ('9+2'). **Centrioles:** 9 triplets, no central pair ('9+0'). All made of tubulin. Both used in motility + signalling.

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Match each cell organelle to its function.

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Matching pairs
  1. Left
    Mitochondria
    Right
    ATP / energy production
  2. Left
    Ribosome
    Right
    Protein synthesis
  3. Left
    Lysosome
    Right
    Intracellular digestion
Instructions
Tap a left tile, then its matching right tile.
_Source: syllabus Biology, Ch 8 'Cell — The Unit of Life'_

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