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#, ht'lod N¡næ SECIION 3.2 Iret 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. s 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 ir. c6> oE o c) 0rganelle 4. nucleus c E c o E 5. endoplasmic reticulum o) f -o õ ,E J 6. ribosomes o ct) 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 l o oo 7. Golgi apparatus o Í'9l o- o c) 8. vesicles Unil 2 Besource Book McDougal Littell Biology processes, sorts, and delivers proteins carries certain molecules from place to place within a cell Study Guide 5 i Pcrit¡d Narnc l)atc STUDY GUIDE, CONTINUED o (J c = c) LL ¡¡¡ ô- MAIN IDEA: Other organelles have various functions. Write the function of each organelle. Draw a sketch to help you remember it. = g) 0rganelle <= õ3 9. +¡ (t) mitochondrion (¡) (J 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? c o o 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 () 15. Why c + are chloroplasts important? They enable plants to convert solar energy into energy-rich molecules that the cell can use c E C)) f -o Vocabulary Gheck 16. o) Which cell part is a maze of folded membranes where proteins and lipids are produced? endoplasmic reticulum J a o.) f o ôo 17. Which cell part converts food into energy that is usable by a cell? o E õ.) mitochondrion o O 6 Study Guide Unit 2 Besource Book McDougal Littell Biology