What type of transportation is this scenario? a red blood cell made up of 9% potassium has a sodium potassium channel that moves the potassium ions across the cell membrane. if the surrounding plasma which contains 5% potassium and the cell is only permeable the solvent. osmosis active transport diffusion facilitated diffusion?

Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which statement is true of these bird species? a. they have adapted to different niches due to competition b. they have a carnivorous relationship with the tree species. c. they have adapted to different niches due to predation d. they have a symbiotic relationship with the tree species.

This is an active transport mechanism by which cells pump sodium and potassium ions against the concentration gradient

Some steps in cell division are shown below: 1. chromosomes condense and pair up 2. segments of dna of sister chromatids twist and cross 3. exchange of dna occurs between chromosomes 4. four daughter cells are created that are haploid which of the following steps is least likely to occur during meiosis 1?