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DSSSB TGT Cell And Its Organisation — practice questions

Explore 7 free Cell And Its Organisation questions in DSSSB TGT Science. Open each question or exercise to read its content, reference answers and available explanation.

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Cell And Its Organisation questions and exercises with answers

Showing questions 1–7 of 7.

The smallest unit that exhibits all the properties of life is the:Read the answer and worked solution →The CELL WALL, made of cellulose, is found in:Read the answer and worked solution →The NUCLEUS of a cell is best described as the cell's:Read the answer and worked solution →Cellular respiration (energy production) primarily occurs in the:Read the answer and worked solution →The Golgi apparatus in a cell functions as the:Read the answer and worked solution →Lysosomes within a cell are best described as:Read the answer and worked solution →CHLOROPLASTS are organelles that:Read the answer and worked solution →

Worked practice questions

The smallest unit that exhibits all the properties of life is the:

  1. Atom, as a tiny building block of matter
  2. Cell, the structural and functional unit of life
  3. Organ, like the heart or kidney
  4. Tissue, a group of similar cells together
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Correct answer: B. Cell, the structural and functional unit of life

The cell is the structural and functional unit of life. Some organisms are made of a single cell (unicellular) others, like humans, are multicellular. Robert Hooke first observed cells in 1665.

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The CELL WALL, made of cellulose, is found in:

  1. All cells, including animal cells, providing rigidity
  2. Animal cells only, providing flexibility
  3. Bacterial cells only (made of cellulose)
  4. Plant cells only (animal cells lack a cell wall)
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Correct answer: D. Plant cells only (animal cells lack a cell wall)

Plant cells have a cell wall made of cellulose, giving them rigidity. Animal cells do not have a cell wall, which is why animal tissues are flexible. Bacterial cells have a different cell wall (peptidoglycan).

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The NUCLEUS of a cell is best described as the cell's:

  1. Control centre, containing DNA and directing activities
  2. Power plant, generating energy through respiration
  3. Recycling unit, breaking down waste molecules
  4. Communication highway, transmitting signals across cells
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Correct answer: A. Control centre, containing DNA and directing activities

The nucleus is the cell's control centre. It contains DNA (organised in chromosomes), is surrounded by a nuclear membrane, and directs all activities (protein synthesis, cell division). The 'power plant' is the mitochondria.

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