Question

part 4: directions: base your answers to the questions on the information below and your knowledge of biology. 1. a scientist observes a cell that has been damaged by radiation. after the damage the cell could no longer control what came in or out of the cell. what cell structure was damaged? use evidence to support your claim. 2. after being exposed to a toxic substance, an animal cell could no longer produce its own proteins. what cell structures could have been damaged? use evidence to support your claim.

Explanation:

1. The cell - membrane is responsible for regulating the movement of substances in and out of the cell. Since the damaged cell can no longer control what enters or exits, the cell - membrane is likely damaged.
2. Ribosomes are the sites of protein synthesis in a cell. If an animal cell can no longer produce its own proteins after exposure to a toxic substance, the ribosomes could be damaged.

Answer:

1. The cell - membrane was damaged. Evidence: The cell lost its ability to control the movement of substances, which is a primary function of the cell - membrane.
2. The ribosomes could have been damaged. Evidence: Ribosomes are responsible for protein synthesis, and the cell can no longer produce proteins.