Plant and Animal Cell Structures

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Presentation transcript:

Plant and Animal Cell Structures Chapter 7 Cellular Structure and Function 7.3 Structures and Organelles Plant and Animal Cell Structures Animal Cell Plant Cell

7.3 Structures and Organelles Chapter 7 Cellular Structure and Function 7.3 Structures and Organelles

7.3 Structures and Organelles Chapter 7 Cellular Structure and Function 7.3 Structures and Organelles

Short, numerous projections that look like hairs Chapter 7 Cellular Structure and Function 7.3 Structures and Organelles Cilia Short, numerous projections that look like hairs 400x Flagella Longer and less numerous than cilia Create movement with a whiplike motion 26,367x

Movement of particles across the cell membrane without using energy Chapter 7 Cellular Structure and Function 7.4 Cellular Transport Passive Transport Movement of particles across the cell membrane without using energy Three Modes of Passive Transport Diffusion Facilitated Diffusion Osmosis

Chapter 7 Cellular Structure and Function 7.4 Cellular Transport Diffusion Movement of particles from an area of high concentration to an area of lower concentration Initial Conditions Diffusion Low High High Low

Diffusion is controlled by Chapter 7 Cellular Structure and Function 7.4 Cellular Transport Diffusion is controlled by Temperature Pressure Concentration Dynamic Equilibrium Reached when diffusion of material into the cell equals diffusion of material out of the cell Molecules continue to move, but the overall concentration remains the same.

Diffusion in a Cell 7.4 Cellular Transport Chapter 7 Cellular Structure and Function 7.4 Cellular Transport Diffusion in a Cell

Facilitated Diffusion Chapter 7 Cellular Structure and Function 7.4 Cellular Transport Facilitated Diffusion Movement of materials across the plasma membrane using proteins

Channel Proteins Carrier Proteins 7.4 Cellular Transport Chapter 7 Cellular Structure and Function 7.4 Cellular Transport Channel Proteins Carrier Proteins

Diffusion of water across a selectively permeable membrane Chapter 7 Cellular Structure and Function 7.4 Cellular Transport Osmosis Diffusion of water across a selectively permeable membrane Three Types of Solutions Isotonic Hypotonic Hypertonic

Chapter 7 Cellular Structure and Function 7.4 Cellular Transport Isotonic Solution Water and dissolved substances diffuse into and out of the cell at the same rate. Plant Cell Blood Cell 11,397x

Solute concentration is higher inside the cell. Chapter 7 Cellular Structure and Function 7.4 Cellular Transport Hypotonic Solution Solute concentration is higher inside the cell. Water diffuses into the cell. Plant Cell Blood Cell 13,000x

Solute concentration is higher outside the cell. Chapter 7 Cellular Structure and Function 7.4 Cellular Transport Hypertonic Solution Solute concentration is higher outside the cell. Water diffuses out of the cell. Plant Cell Blood Cell 13,000x

Active Transport Using Carrier Proteins Chapter 7 Cellular Structure and Function 7.4 Cellular Transport Active Transport Movement of particles across the cell membrane using energy Active Transport Using Carrier Proteins

Types of Active Transport Pumps Chapter 7 Cellular Structure and Function 7.4 Cellular Transport Types of Active Transport Pumps Na+/K+ ATPase pump Moves three Na+ ions out of the cell and two K+ ions into the cell

Process by which the cell surrounds and takes particles into the cell Chapter 7 Cellular Structure and Function 7.4 Cellular Transport Endocytosis Process by which the cell surrounds and takes particles into the cell Exocytosis Secretion of material out of the plasma membrane