Cell transport is movement of materials across cell membranes. Cell transport includes passive and active transport. Passive transport does not require energy whereas active transport requires energy to proceed. Passive transport proceeds through diffusion, facilitated diffusion and osmosis. The purpose of the transport proteins is to protect the cell's internal environment and to keep its balance of salts, nutrients, and proteins within a range that keeps the cell and the organism alive.
Answer:
Carbon Dioxide
Explanation:
Plant cells respire in the light and the dark, releasing carbon dioxide.
(brainliest please)
Answer:
The correct answer is organisms that have extreme traits. Explanation: Disruptive selection is a specific type of natural selection that describes changes in population genetics. In disruptive selection, both extreme values for a trait are favored over intermediate values.
Explanation:
Mees lines. These are characteristic of heavy metal poisoning.
