3. Cells

Mitochondria

Cytoplasm

Components of a Cell - Mitochondria

 Ribosomes, which can be free in the cytosol or attached to the rough endoplasmic reticulum, are the organelles responsible for protein synthesis. 

 in the cytosol and on the rough endoplasmic reticulum 

 in the nuclear membrane and on the endoplasmic reticulum 

 Mitochondria are threadlike or lozenge-shaped membranous organelles. In living cells they squirm, elongate, and change shape almost continuously. They are the power plants of a cell, providing most of its ATP supply. 

 The primary site of cellular ATP production in most cells is the __________. 

The Endomembrane System

 Lysosomes are spherical membrane-bound sacs that contain many different digestive enzymes utilized within the cell. 

 Lysosomes perform which of the following cellular functions? 

Peroxisomes & Lysosomes

 Mitochondria are the site of ATP synthesis. 

 Ribosomes function in protein synthesis. 

 The nuclear envelope regulates the movement of molecules into and out of the nucleus. 

 Centrioles serve as the base of cilia and flagella and in pairs compose centrosomes. 

 Which of the following organelles possesses oxidase enzymes that function in neutralizing harmful free radicals? 

 Cilia move in unison, creating a unidirectional current that propels substances across cell surfaces. 

 Which of the following cell structures are involved in propelling substances across cell surfaces? 

Lysosomes, Peroxisomes and Cytoskeletal Elements

Cilia and Microvilli

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