Lesson 2 | The Cell
Lesson 2 | The Cell
Student Labs and Activities
Launch Lab Content Vocabulary Lesson Outline MiniLab Content Practice A Content Practice B Language Arts Support School to Home Key Concept Builders Enrichment Challenge Skill Practice
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Cell Structure and Function
Name
Date
Class
Launch Lab
LESSON 2: 10 minutes
Why do eggs have shells?
Bird eggs have different structures, such as a shell, a membrane, and a yolk. Each structure has a different function that helps keep the egg safe and assists in development of the baby bird inside of it.
Procedure
1. Read and complete a lab safety form.
2. Place an uncooked egg in a bowl.
3. Feel the shell, and record your observations in your Science Journal.
4. Crack open the egg. Pour the contents into the bowl.
5. Observe the inside of the shell and the contents of the bowl. Record your observations in your Science Journal.
Think About This
1. What do you think is the role of the eggshell?
2. Are there any structures in the bowl that have the same function as the eggshell? Explain.
3.
Key Concept What does the structure of the eggshell tell you about its function?
Copyright ? Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Cell Structure and Function
25
Name
Date
Class
Content Vocabulary
LESSON 2
The Cell
Directions: Use the clues and the terms listed below to complete the puzzle. NOTE: There is no empty square in the puzzle between the words of two-word terms.
cell membrane cytoskeleton
cell wall envelope function
chloroplast nucleus
cytoplasm organelle
1
2
3
4
5
Copyright ? Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
6
7
8
9
Clues
Across 4. organelle that contains DNA
Down 1. stiff structure outside the cell membrane
6. a flexible covering that surrounds a cell
2. an outer covering
7. fluid inside the cell that contains salts and other molecules
3. a network of threadlike proteins within a cell
8. a membrane-surrounded component within a cell
5. organelle that conducts photosynthesis
9. the action for which something is used
26
Cell Structure and Function
Name
Date
Class
Lesson Outline
LESSON 2
The Cell
A. Cell Shape and Movement
1. A cell is made of different a cell alive.
that work together and keep
2. The
is a flexible covering that protects the inside
of a cell from the environment outside.
3. A cell membrane is mostly made of phospholipids and
.
4. A(n) of some cells.
is a stiff structure outside the cell membrane
5.
, fungal cells, and some types of bacteria have cell walls.
6. Cell appendages are often used for
.
a. Long, tail-like appendages called and move a cell.
whip back and forth
b.
are short, hairlike structures that can move a cell or
move molecules away from a cell.
7. Most water in a cell is in the and other molecules.
, a fluid that contains salts
8. The
is made of a network of threadlike proteins that
are joined to form a framework inside a cell.
B. Cell Types
1. With advanced microscopes, scientists discovered that all cells can be grouped into
two types--prokaryotic and
.
2. The most important feature of a(n) genetic material is not surrounded by a membrane.
cell is that the
3. Plants, eukaryotic cells.
, fungi, and protists are made of one or more
4. Every eukaryotic cell has membrane-surrounded components, called
, which have specialized functions.
C. Cell Organelles
1. The
is the part of a eukaryotic cell that directs cell
activities and contains genetic information stored in DNA.
2. Surrounding the nucleus are two membranes that form a structure called the
nuclear
.
Cell Structure and Function
27
Copyright ? Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Name
Date
Class
Lesson Outline continued
3.
are made in small structures called ribosomes.
4. Ribosomes can be found in a cell's weblike organelle called the endoplasmic reticulum.
or attached to a
5. Energy is released during chemical reactions that occur in
the
.
6.
is the fuel for cellular processes such as growth, cell
division, and material transport.
7. Chloroplasts are membrane-bound organelles that use energy and make glucose from water and carbon dioxide. This energy drives a
process known as
.
8. The Golgi apparatus prepares
and packages them into
ball-like structures called
.
9.
are organelles that help recycle cellular components.
10. Vacuoles are organelles that material.
food, water, and waste
Copyright ? Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
28
Cell Structure and Function
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