No but also yes so probably both but i would say that a dust might is smaller.
I think the correct answer is receptor. To respond to a chemical signal a cell must have a receptor and also this where the signaling molecule can bind. A receptor is a protein molecule that can receive signals from the outside environment of the cell.
The answer would be that chromosomes are made out of DNA.
Answer:
waters polarity causes cohesion that pulls other water molecules up through a plant.
I hope this helps
