In cells, some molecules can move down their concentration gradients by crossing the phospholipid portion of the membrane directly, while others must pass through membrane proteins. Which of these statements applies to facilitated diffusion? I. requires the use of a membrane protein

II. used to move large/ or polar molecules

III. requires energy

I and II

III only

I only

I and III

Aplant has an egg with 34 chromosomes how many chromosomes does a leaf cell of that plant have

The structure that houses the cells genetic information.

In the united states there are strict fishing seasons and limits, but not all countries enforce similar laws. in bangladesh there are few if any fishing restrictions. what might be the reason for less restrictions in smaller countries like bangladesh? a) the united states is the only country worried about overfishing. b) the united states wants to limit the supply of fish to increase the price. c) bangladesh and smaller countries have an unlimited supply of fish in their coastal waters. d) small countries, such as bangladesh, are practicing subsistence fishing, taking only the fish needed to survive.