A student is using a microscope to observe samples taken from pond water. She notices something that she thinks may be a living
thing. Which argument would BEST support that the unknown sample is a living thing? A.The sample was moving, so it must be alive, because all living things respond to their environment.
B.The sample has cells, so it must be alive, because all living things are made up of one or more cells.
C.The sample is green, so it must be alive, because plants are green and they are alive.
D.The sample was producing bubbles, so it must be alive, because only living things can have chemical reactions that would release gases.
B) The sample has cells, so it must be alive, because all living things are made up of one or more cells.
Explanation:
A cell is the smallest unit of a living thing. A living thing, whether made of one cell (like bacteria) or many cells (like a human), is called an organism.
What I'm trying to say is each cell is capable of converting fuel to useable energy.Therefore, cells not only make up living things,so they are living things. Cells are found in all plants, animals, and bacteria.
