Download 3.2 Study Guide KEY

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CELL ORGANELLES
Study Guide
KEY CONCEPT
Eukaryotic cells share many
similarities.
VOCABULARY
cytoskeleton
Golgi apparatus
lysosome
nucleus
vesicle
centriole
endoplasmic reticulum
mitochondrion
cellwall
ribosome
vacuole
chloroplast
MAIN IDEA: Cells have an internal structure.
1. Look at Figure 3.5 in your textbook. What are the functions of a cytoskeleton?
The
2.
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and shapes the cell, positions and transports
les,
How is a cytoskeleton like your skeleton?
The cvtoskeleton suooorts and shaoes the cell.
3.
How is a cytoskeleton like your muscles?
The cvtoskeleton helos the cell move
MAIN IDEA: Several organelles are involved in making and processing proteins.
Write either the function or the name of each organelle. Draw a sketch to help you remember
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nucleus
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ribosomes
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Function
Sketch
stores most of the genetic info
of the cell; contains the nucleosus,
where ribisomes are assembled
helps in the production of
proteins and lipids
link amino acids together to
form proteins
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8. vesicles
Unil 2 Besource Book
McDougal Littell Biology
processes, sorts, and delivers
proteins
carries certain molecules from
place to place within a cell
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MAIN IDEA: Other organelles have various functions.
Write the function of each organelle. Draw a sketch to help you remember it.
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mitochondrion
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Function
supply energy energy to the cell
by converting molecules from
food into unsable energy
1O. vacuole
stores materials needed by a cell
may help provide support to planl
cells
11. lysosome
contains enzymes that break
down damaged and worn-out cell
parts; defends a cellfrom
invaders
organizes mocrotubules to form
cilia and flagella for cell motion
or the movement of fluids past
a cell
12.
centriole
Sketch
MAIN IDEA: Plant cells have cell walls and chloroplasts.
13. What role do cell walls play in aplant?
The cell walls are stronq and rigid and adhere to each other, which helps to support the entire plant.
14. What is the difference between a cell wall and a cell membrane?
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All cells are surrounded by a cell membrane that is flex¡ble and ¡nteracts w¡th the env¡ronmênt only certa¡n cells have a cell wâll wh¡ch ìs rigid and provides shape and support toEells
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15. Why
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are chloroplasts important?
They enable plants to convert solar energy into energy-rich molecules that the cell can use
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Vocabulary Gheck
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Which cell part is a maze of folded membranes where proteins and lipids are produced?
endoplasmic reticulum
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17. Which cell part converts food into energy that is usable by a cell?
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mitochondrion
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Study Guide
Unit 2 Besource Book
McDougal Littell Biology