Download Cells - SawyerScience

Name
Date
Directed Reading for
Content Mastery
Class
Overview
Cells
Directions: Complete the concept map using the terms listed below.
lysosome
chloroplast
mitochondria
cell wall
has
ribosome
has
Meeting Individual Needs
1.
has
has
2.
has
A plant cell
An animal cell
3.
has
Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.
has
has
has
nucleus
4.
Directions: Complete the following sentences using the terms listed below.
virus
cytoplasm
microscope
vaccine
cell theory
5. A ____________________ is often used to prevent viral diseases.
6. We need to use a ____________________ to see most cells.
7. Cells are filled with a gelatinlike mixture called ____________________.
8. A ____________________ is a disease-causing strand of hereditary material
surrounded by a protein coating.
9. The ___________________ was developed from the observations and conclusions
of several scientists.
Cells
19
Name
Date
Directed Reading for
Content Mastery
Section 1
Section 2
■
■
Class
Cell Structure
Viewing Cells
Directions: Write T if the statement is true; write F if the statement is false.
1. Fungi have prokaryotic cells.
2. Most one-celled organisms are prokaryotic.
3. Plants and animals have eukaryotic cells.
4. Animal cells are enclosed in a cell wall.
Directions: Study the following diagram. Then use it to answer the questions on the lines provided.
Appearance
of specimen
Specimen
Light rays
Magnified object
Light ray
Objective lens
Eyepiece lens
Light source
6. a. A microscope contains one or more glass lenses. What do the lenses do to light
that passes through them?
b. How does this affect the way an object appears when it reaches your eye?
7. The microscope’s objective lens has a magnification of 40✕. How many times will
it magnify the specimen?
8. A microscope’s objective lens magnifies an object 40 times. The eyepiece magnifies an additional 10 times. What is the microscope’s total magnification?
20 Cells
Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.
Meeting Individual Needs
5. The cell membrane is the protective layer around all cells.
Name
Date
Directed Reading for
Content Mastery
Section 3
■
Class
Viruses
Directions: Study the diagram showing the reproduction cycle of viruses. Then write a sentence describing each stage.
5.
Virus
Nucleus
4.
Host cell
2.
Meeting Individual Needs
1.
Viral
hereditary
material
3.
Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.
Viral
proteins
1.
2.
3.
4.
5.
Cells
21
Name
Date
Directed Reading for
Content Mastery
Class
Key Terms
Cells
Directions: Write the letters of the correct terms in the space beside each definition.
2. They are green organelles in the
cytoplasm of plant cells.
b. cytoplasm
c. prokaryotic
Meeting Individual Needs
3. This is a gelatinlike material inside
every cell.
d. cell theory
4. This is the outer covering that protects
all cells.
e. mitochondrion
5. It directs all the activities of cells.
f. tissue
6. It releases energy in food that cells need.
g. cell wall
7. It is a summary of scientific observations
and conclusions about cells.
h. chloroplasts
8. It protects the cells of plants, algae, fungi,
and most bacteria.
i. eukaryotic
9. It is a strand of hereditary material
surrounded by a protein coating.
j. organ
10. It is a group of similar cells that
work together to do one job.
11. This kind of cell is a membranebound structure.
12. This kind of cell has no internal membranebound structure.
22 Cells
a. cell membrane
k. virus
l. nucleus
Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.
1. It is a structure made up of different
types of tissues that work together.