Hi there, I was wondering if someone could help me fill out this chart and expla

Question

Hi there, I was wondering if someone could help me fill out this chart and explain they choose their answers?

For each of the following molecules, describe how it would likely cross the cell membrane to enter into a cell. (2 pts.) 5. a. b. c. d. Does the molecule use active or passive transport (or possibly both)? Can the molecule use simple diffusion to cross the cell membrane? Does the molecule use facilitated diffusion to cross the cell membrane? If the molecule uses a membrane protein to cross the membrane, what type of membrane protein does it use? (Carrier protein, pump, channel protein, and/or aquaporin) A. Active or passiveB. Can it use simple C. FacilitatedD. Type of protein Molecule Transport? diffusion? diffusion? used passive transport yes H20 02 Glucose

Explanation / Answer

The lipid bilayer is permeable to water and few other small uncharged molecules like O2 and CO2, but it is impermeable to ions, glucose, RNA and proteins. Thus ions and glucose require facilitated or active transport.

NA- not applicable

Molecule Active or passive transport? Can it use simple diffusion? Facilitated diffusion? Type of protein used H2O passive transport yes yes, through aquaporins aquaporins H+ Active transport no no proton pumps O2 Passive transport yes no NA Glucose Indirect active transport no yes, through channels sodium-glucose transporter pump

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