Help me, please someone I don't get this

Analogy- 1 is to arete as 5 is to cirque horn glacial valley hanging valley

When is your respiration rate likely to change? a. when your intestines are digesting b. when your cells have too much glucose c. when your cells need more oxygen d. when your liver is working after a meal

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this