The plasma membrane is composed of a layer of phospholipids. The ends of the phospholipids face the extracellular and intracellular sides. The ends of the phospholipids face each other and form the core of the membrane. The inner part of the membrane is . The polar regions of the phospholipids are . The proteins and phospholipids move laterally through the membrane.

Alichen is an organism that structurally appears to be a single organism. but a lichen is actually two different organisms—a fungus and green algae—living together as one organism. the fungal partner derives its nutrition from the photosynthesizing algae. how does a lichen differ in its photosynthetic activity from elysia chlorotica, the sea slug that’s considered to be a photosynthesizing animal? a. in lichens, the fungi photosynthesize on their own, while elysia chlorotica forms a relationship with a photosynthesizing plant. b. in lichens, the relationship with the algae lasts throughout the life cycle, but in elysia chlorotica, the relationship occurs only during the immature juvenile stage of the slug’s life cycle. c. lichens can photosynthesize only because of the living algal partner, while elysia chlorotica incorporates chloroplasts from algae into its cells. d. in lichens, the association between the fungi and algae is permanent, while elysia chlorotica associates with a photosynthesizing organism only when it requires food.

An atom of nitrogen had seven protons in its nucleus. how many electrons does it have

Which best describes what you will do in the reaching your academic potential course?