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Cells Quiz for Grade 7

10 science questions on cells with answers, written for Grade 7. Use it as it is, change any question, print it with an answer key, or give it online and let it grade itself.

1.
What is the basic unit of life in all living organisms? (Multiple choice)
  1. Organ
  2. Atom
  3. Molecule
  4. Cell
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Cell

Cells are the smallest units that can carry out all life processes.
2.
Which part of the cell controls its activities and contains genetic material? (Multiple choice)
  1. Nucleus
  2. Cell membrane
  3. Ribosome
  4. Mitochondria
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Nucleus

The nucleus contains DNA and directs cell functions.
3.
What structure surrounds the cell and controls what enters and leaves? (Multiple choice)
  1. Cell wall
  2. Cytoplasm
  3. Cell membrane
  4. Nucleus
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Cell membrane

The cell membrane regulates movement of substances in and out of the cell.
4.
Which organelle is known as the powerhouse of the cell because it produces energy? (Multiple choice)
  1. Mitochondria
  2. Golgi apparatus
  3. Chloroplast
  4. Ribosome
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Mitochondria

Mitochondria generate energy through cellular respiration.
5.
Plant cells have a rigid _____ that provides support and protection. (Multiple choice)
  1. Vacuole
  2. Cell wall
  3. Cell membrane
  4. Nucleus
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Cell wall

The cell wall gives plant cells their shape and strength.
6.
All cells have a nucleus. (True or false)
  1. True
  2. False
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False

Some cells, like bacteria, do not have a nucleus.
7.
Chloroplasts are found only in plant cells and help in photosynthesis. (True or false)
  1. True
  2. False
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True

Chloroplasts contain chlorophyll and perform photosynthesis in plants.
8.
Name the jelly-like substance inside the cell where organelles are found. (Identification)
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Cytoplasm

Cytoplasm holds organelles and allows chemical reactions to occur.
9.
The _____ is a large organelle in plant cells that stores water and nutrients. (Fill in the blank)
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Vacuole

The vacuole stores substances and helps maintain cell pressure.
10.
Match each cell part with its function. (Matching type)
1. Nucleus
A. Controls cell activities
2. Mitochondria
B. Produces energy
3. Cell membrane
C. Regulates entry and exit
4. Chloroplast
D. Carries out photosynthesis
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1 = Controls cell activities; 2 = Produces energy; 3 = Regulates entry and exit; 4 = Carries out photosynthesis

Each organelle has a specific role essential for cell function.