For each of the following substances, indicate how they will get through the plasma membrane and into the cell. in this case, consider channel proteins and charged channel proteins to be different, and use two more precise terms for endocytosis.

a. water
b. a protein
c. a mg²+ ion
d. a monosaccharide (simple sugar)
e. an invading bacterium
f. a lipid

Epithelium is connected to underlying connective tissue by

Solar energy causes water to evaporate into the atmosphere. how does that water vapor become a cloud? a) as the water vapor goes higher in the sky, the air gets cooler. the cooler air causes the water vapor to condense. b) as the water vapor goes higher in the sky, solar energy causes it to condense around particles of dust. c) as the water vapor goes higher in the sky, the air gets warmer and the water vapor begins to condense. d) as the water vapor goes high into the atmosphere it turns to ice and that's what forms clouds.

Agriculture is changing the environment. with increased populations, there is a greater demand for food. which of the following is not an impact of farming? a) pesticide and fertilizer pollution b) sediment transport and deposition downstream c) increased water supply and flooding d) desertification and deforestation