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Grade 9 Cell Transport & Homeostasis Worksheet with Answers

Grade 9 (US) · Year 10 (UK) · Class 9 (India) · Science

Unit 1: Chemistry of Life & CellsCell Transport & HomeostasisNGSS HS-LS1-3

Diffusion, osmosis and active transport, and how cells keep stable conditions. This free high school worksheet has 12 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.

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Cell Transport & Homeostasis

Grade 9 · Science

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Learning goal: Cell Transport & Homeostasis · NGSS HS-LS1-3

Directions: Read each question carefully and write your answer on the line.

RememberMoving across membranes

membranehigh concentrationlowDiffusion: high → low, no energyOsmosis: water across a membraneActive transport: low → high,needs energy (ATP)
  1. 1

    A cell is placed in very salty water. What happens to it?

  2. 2

    What does a hypotonic solution have compared with the cell?

  3. 3

    What is homeostasis?

  4. 4

    A cell is placed in pure water. What happens to an animal cell?

  5. 5

    Why do slugs shrivel when salt is put on them?

  6. 6

    Does active transport need energy?

  7. 7

    What is osmosis?

  8. 8

    What is endocytosis?

  9. 9

    What is diffusion?

  10. 10

    What controls what enters and leaves a cell?

  11. 11

    Does passive transport need energy?

  12. 12

    Why don't plant cells burst in fresh water?

★ Challenge corner for fast finishers

Why do you see lightning before you hear thunder?

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Teacher's comments

Free printable worksheets with answer keys · aethelsystems.com/worksheets/science/9/cell_transport

Answer key (click to show)
  1. 1.water leaves and the cell shrinks
  2. 2.lower solute concentration (more water)
  3. 3.keeping stable conditions inside the body or cell
  4. 4.water enters and it swells (may burst)
  5. 5.water leaves their cells by osmosis
  6. 6.yes (ATP)
  7. 7.diffusion of water across a membrane
  8. 8.a cell taking in large particles by wrapping its membrane around them
  9. 9.movement of particles from high to low concentration
  10. 10.the cell membrane
  11. 11.no
  12. 12.the cell wall stops them
  13. ★light travels much faster than sound (challenge corner)

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