Biology Help

[Ms. Nurse Assistant, LPN]

A)Place the steps of enzyme function in the correct order

1. substrate and enzyme change shape

2. substrate enters the active site

3. enzyme reverts to original configuration

4. Product is expelled

B)Select the type of transport described in the statements below (diffusion, faciliated diffusion, osmosis, active transport)

1. the movement of small molecules across a membrane to regions in which they are more concentrated, using the energy of the hydrolysis of a molecule ATP

2. the movment of water across a membrane from regions of high concentration to regions of low concentration

3. the movement of small lipid soluble molecules from regions of high concention to regions of low concentration by binding to and being tranported by membrane proteins

4. the movement of small lipid soluble molecules from regions of high concentraton to regions of low concentration by p assing freely through the lipid bilayer