Lights, Camera, Acting Transport Pre-Activity Worksheet Name: Ennia ES LIGHTS, C

ID: 195986 • Letter: L

Question

Lights, Camera, Acting Transport Pre-Activity Worksheet Name: Ennia ES LIGHTS, CAMERA, ACTING TRANSPORT! This worksheet will prepare you for your upcoming activity on membrane transport. Read sections 5.1-5.4 in Raven and respond to the following. 1. Fill out the following chart comparing different mechanisms of transport across a plasma membrane: Simple Diffusion Diffusion Active Active Types of molecules transported? (List size, polarity, charge) Requires a carrier or channel protein? Requires an additional energy source? Yes/No) Do any molecules travel against their concentration or electrochemical hat is meant by the term "membrane potential"? What is an electrochemical gradient?

Explanation / Answer

Simple diffusion

Facilitated diffusion

Primary Active transport

Secondary active transport

Types of molecules transported

Hydrophobic, small, neutral

larger, charged, hydrophilic, and polar molecules

dissolved molecules, metal ions, such as Na+, K+, Mg2+, and Ca2+

Glucose, likelarger molecules dissolved form

Requires a carrier or channel protein?

Yes

Requires an additional energy source?

Yes

Do any molecule travel against their concentration or electrochemical gradients?

Yes

yes