The surface area/volume ratio is an important factor for one celled organisms. as a cell's volume grows, its surface area/volume ratio making it more difficult to acquire enough nutrients via diffusion.

Rotenone is an insecticide that is toxic

Which of the following is not a defining characteristic of plants?

The idea that all living things are made up of cells is considered scientific law. this means the idea is an emerging scientific idea that has a logical explanation. has been tested with similar results at least twice. is supported by scientific consensus and a large amount of evidence. has been rejected only once by the scientific community