Which of the mechanisms listed below requires energy?
a. endocytosis
b. diffusion of oxygen into a red blood cell
c. osmosis of water across the cell membrane
d. facilitated diffusion of ions through a protein channel

You have 2 plants of the same type and same size, same amount of leaves. one of them is put inside the house and the other one is put in the balcony. you water them saturday, one plant with 200 ml and the other with 400 ml of water. which one of your plants need less water? explain.

How are fungi more like an animal? they have a cell wall. they are heterotrophs that absorb their food. they produce seeds and have membrane-bound nucleus. they use sunlight for photosynthesis.

Match each symbol with its description.