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DSSSB TGT Cell — practice questions

Explore 13 free Cell questions in DSSSB TGT Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Cell questions and exercises with answers

Showing questions 1–13 of 13.

The basic structural and functional unit of all living organisms is the:Read the answer and worked solution →What instrument allowed scientists to first observe individual cells?Read the answer and worked solution →The thin boundary that surrounds every cell and controls what enters and leaves is the:Read the answer and worked solution →The ability of a microscope to distinguish two very close objects as separate is called its:Read the answer and worked solution →The control centre of the cell, containing genetic material (DNA), is the:Read the answer and worked solution →The organelle known as the 'powerhouse of the cell' (because it produces ATP energy) is the:Read the answer and worked solution →Which structure is FOUND IN PLANT CELLS but NOT in animal cells?Read the answer and worked solution →The semifluid matrix inside a cell where many organelles are suspended is called the:Read the answer and worked solution →Ribosomes are the sites of:Read the answer and worked solution →The structure that controls what enters and leaves the cell (selectively permeable) is the:Read the answer and worked solution →In a leaf cell, the GREEN COLOUR comes from organelles called:Read the answer and worked solution →Match the cell organelle to its functionRead the answer and worked solution →Spot the organelle that is NOT in animal cellsRead the answer and worked solution →

Worked practice questions

The basic structural and functional unit of all living organisms is the:

  1. Tissue
  2. Molecule
  3. Atom
  4. Cell
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Correct answer: D. Cell

All living organisms — single-celled (bacteria, amoeba) and multicellular (plants, animals) — are made of cells. Cells perform all life functions (energy use, reproduction, response to environment). **The cell theory says:** (1) all living things are made of cells (2) cells come from pre-existing cells (3) the cell is the basic unit of structure and function.

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What instrument allowed scientists to first observe individual cells?

  1. X-ray machine
  2. Microscope
  3. Stethoscope
  4. Telescope
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Correct answer: B. Microscope

The microscope — first the light microscope (using visible light + lenses), and later the electron microscope (using electron beams) — revealed the cellular structure of life. Without microscopes, cells (typically 1–100 μm) are far too small to see. Light microscopes typically reach 1000× magnification electron microscopes go to 1,000,000×.

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The thin boundary that surrounds every cell and controls what enters and leaves is the:

  1. Cytoplasm
  2. Cell wall
  3. Cell membrane
  4. Nucleus
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Correct answer: C. Cell membrane

The cell membrane (plasma membrane) is the universal feature of all cells — present in both plant and animal cells. It controls the selective entry and exit of substances. Plant cells also have a rigid CELL WALL outside the membrane, but animal cells don't.

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More Biology topics

Life ProcessesScienceControl and CoordinationHeredityHeredity and EvolutionCell And Its OrganisationC9organellesTissues