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Standard Biology. Chapter 7 Part III Cell Transport. Two Basic Types of Transport. Passive Transport Requires no energy Solute or ions follow a concentration gradient Active Transport Requires energy Substances move against a concentration gradient Bulk Transport. Diffusion.
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Standard Biology Chapter 7 Part III Cell Transport
Two Basic Types of Transport • Passive Transport • Requires no energy • Solute or ions follow a concentration gradient • Active Transport • Requires energy • Substances move against a concentration gradient • Bulk Transport
Diffusion Through Proteins Carrier Proteins – Revolving Door (Facilitated Diffusion) Channel Proteins - Tunnel
Active Transport • Pumps • Bulk Transport