Which of the Following Statements About Cellular Aging Is True

question 74

Multiple Choice

Which of the following statements about cellular aging is true?

• A) Cells can replicate indefinitely, but errors do occur.
• B) Aging may be caused by the inevitable loss of the ability of cells to duplicate perfectly.
• C) Damage is caused by free radicals that slow down the cell-duplication process.
• D) Cells from adults are able to duplicate more quickly and more times than are cells from embryos.

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Definitions:

Cell Cycle

Cyclic series of events in the life of a dividing eukaryotic cell; consists of mitosis, cytokinesis, and the stages of interphase.

Chromosomes

Structures within cells that contain genetic information in the form of DNA, crucial for inheritance and cell division.

S Phase

Stage in interphase of the cell cycle during which DNA and other chromosomal constituents are synthesized. Compare with G1 phase and G2 phase.

Metaphase

A stage of cell division where chromosomes line up at the cell's equator before being separated into each of the two new cells.