Question

1. molecules that are and are able to move across the cell membrane via simple diffusion. hydrophobic; small hydrophilic; large hydrophobic; large hydrophilic; small multiple choice 1 point 2. why does active transport of molecules across a membrane require atp? an input of energy is needed because the movement of molecules requires the synthesis of additional membrane an input of energy is needed to allow the movement of molecules from an area of low concentration to one of higher concentration an input of energy is needed to move all molecules across a membrane an input of energy is needed to speed up the rate of facilitated diffusion multiple choice 1 point 3. which eukaryotic cell structure plays a role in protein trafficking and sorting? peroxisomes lysosomes golgi apparatus vacuoles

Explanation:

1. Small hydrophobic molecules can pass through the non - polar lipid bilayer of the cell membrane via simple diffusion due to their compatibility with the membrane's non - polar environment.
2. Active transport requires ATP because it moves molecules against their concentration gradient (from low to high concentration), which is an energetically unfavorable process and needs energy input.
3. The Golgi apparatus is involved in protein trafficking and sorting. It modifies, packages, and distributes proteins to their appropriate destinations within the cell or for secretion outside the cell.

Answer:

1. hydrophobic; small
2. An input of energy is needed because the movement of molecules requires the synthesis of additional membrane
3. Golgi apparatus