Which of these particles is able to pass freely through a cell membrane? O A. A nucleic acid molecule
B. A polysaccharide molecule
O c. A disaccharide molecule
O D. A carbon dioxide molecule

There are specialized producers that live in warm water vents deep in the ocean. these producers do not per-form from photosynthesis, but instead perform a similar process with iron and other chemicals. why do you think these producers use this process instead of photosynthesis?

Explain why the plants cortex would serve as the best food source for animals

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