Cells need to bring in molecules to carry out cellular processes. Often, this requires molecules moving across the cell membrane with the concentration gradient. How do these molecules get into the cell?

How does the author's purpose in this passage differ from an author writing about her personal struggle living with asthma?

Me with these questions if you’re it sure don’t answer

Put the following steps of the convection process in the correct order. 1. gravity pulls cooler matter downward. 2. the matter expands and decreases in density. 3. an up-and-down flow of matter produces a convection current. 4. matter is heated. 5. warmed matter is forced upward. question 2 options: a) 4, 2, 5, 1, 3 b) 2, 4, 3, 1, 5 c) 3, 2, 5, 4, 1 d) 1, 4, 2, 5, 3