When cells are grown in a laboratory, which of the following is a factor that can stop normal cells from dividing? A. contact with other cells B. growth factors C. a cut in the skin D. injection of cyclin

When considering drug resistance, would you say that: A. the resistant bacteria were pre-existing (already present) in the population before exposure B. the drug caused a bacterium to change from being sensitive to being resistant to the drug

The coast of California on the western side of the state has a moist climate, while the eastern side is a desert. What could cause this difference? A. Cool winds cannot blow across a large lake into the desert. B.

The physical expression of a trait in an organism is known as the

Which of the choices below does not support the theory of endosymbiosis

What is a pause (earth science term) ?

Any gene that can turn a normal cell into a tumorous cell is called an

Explain how energy from the sub is transformed and passed from one organism to another

Which of the following is not a characteristic of life? a.) maintains homeostasis b.) composed of cells c.) composed of atoms d.) carries out metabolism

What limits cell division?

Where does glycolysis and fermentation take place in the cell membrane?