Your brain cells, or neurons are constantly sending electrical signals to each other. In order for this to occur, they need to move sodium (Na+) and
potassium (K+) ions against their concentration gradient. So even if there is
more Na+ outside of the cell and less inside, the cell wants to keep
pumping the Na+ out of the cell against its concentration gradient. What
type of transport will it need to do? *

Facilitated diffusion
Simple diffusion
Active transport-protein pumps
Exocytosis

Sampling lake water for microscopic organisms is not as easy as it sounds when you want to both count and identify species. in a given water sample, your bacteria of choice can be rare or difficult to culture, particularly given the mixture of bacteria in a biofilm. which of the following culture media would be best for growing fecal coliforms when they are relatively less abundant than other bacteria in the lake? anaerobic culture medium enrichment culture medium complex culture medium basic culture medium

Can create a hboth of these instruments can measure wind speed. doppler radar and psychrometer anemometer and hygrometer doppler radar and anemometer radiosonde and psychrometer

In the ocean why are the greatest amount of primary producers found in the epipelagic zone and how does that affect biodiversity