Cancer cells can form tumors. Which of the following is NOT true of cancer cells? Question options:

1. Cancer cells cannot move to other parts of the body
2. Cancer cells ignore signals that should cause them to stop dividing.
3. Cancer cells fail to undergo apoptosis
4. Cancer cells exit the cell cycle and enter the G0 phase

Drag the tiles to the correct boxes to complete the pairs. match the nitrogenous base of dna with its complement.

What goes in and out of a cell respiration?

Lactase is essential for digesting lactose in milk. this enzyme is specific for this sugar. why? molecules and active sites vary in size; only properly sized molecules can fit.there is a precise compatibility between the active site and the lactose molecule.specificity refers to the action of the enzyme, such as hydrolysis, and relatively few molecules can be hydrolyzed.reaction-specific enzymes assume a fit by folding around the most numerous substrate molecules.