LESSON
Name
Outline
Date
Cells
Use your textbook to help you fill in the blanks.
What are cells?
1. All organisms, or living things, are made of
cells
.
2. Every cell in every living thing comes from another cell
that
splits (or divides)
.
3. A single-celled organism that can carry on all its life
unicellular
processes is called
.
4. Organisms made up of more than one cell are called
multicellular
.
5. Scientists estimate that there are more than
1 billion
kinds of unicellular organisms.
What is inside an animal cell?
6. Both plant and animal cells perform life processes by
using
organelles
.
8. The region between the cell membrane and the nucleus is
filled with
cytoplasm
.
9. The cell’s control center is called the
4-6
Unit 4 • Cells to Living Organisms
Unit Resources
nucleus
.
Use with Lesson 1
Cells
© McGraw-Hill Education
cell membrane
7. All cells are surrounded by a(n)
that
controls the materials that move in and out of the cell.
Name
LESSON
Date
Outline
10. The tiny power plants in the cell where food is broken down
mitochondria
and energy is released are called
.
11. A structure in a cell used for storage of water, food, and
waste is called a(n)
vacuole
.
What is inside a plant cell?
cell wall
12. Plant cells have a(n)
that serves as an outer covering.
, a rigid structure
chloroplast
13. A green structure called a(n)
energy from the Sun to produce food for the plant.
uses the
How can cells be seen?
14. Cells are so small that a(n)
to view them.
microscope
is needed
electron
15. In the 1940s,
microscopes were
created that were 40,000 times more powerful than previous
microscopes.
Critical Thinking
16. Compare and contrast the cells of plants, animals, and
unicellular organisms.
All cells come from the division of other cells. Cells can carry on basic
© McGraw-Hill Education
life processes. Plants and animals are multicellular organisms. Their
cells carry out life processes by working together. Plant and animal
cells have cell membranes, nuclei, cytoplasm, and organelles such as
mitochondria and vacuoles. Plant cells have structures that animal
cells lack, such as cell walls and chloroplasts. Unicellular organisms
have all of the necessary parts needed to carry out life processes in
one cell.
Unit 4 • Cells to Living Organisms
Unit Resources
Use with Lesson 1
Cells
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