Cells from Advanced Malignant Tumors Often Have Very Abnormal Chromosomes

question 32

Multiple Choice

Cells from advanced malignant tumors often have very abnormal chromosomes and an abnormal number of chromosomes. What might explain the association between malignant tumors and chromosomal abnormalities?

• A) Cancer cells are no longer density-dependent.
• B) Cancer cells are no longer anchorage-dependent.
• C) Cell cycle checkpoints are not in place to stop cells with chromosome abnormalities.
• D) Transformation introduces new chromosomes into cells.

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Definitions:

First Law

Without a specific context, "First Law" could refer to various foundational laws in different fields, such as Newton's First Law of motion that states an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.

Allosteric Regulator

A molecule that binds to an enzyme at a site other than the active site, thereby modifying the enzyme's activity.

Catalyst

A substance that increases the rate of a chemical reaction without being consumed or altered permanently in the process.

Semipermeable Membrane

A type of membrane that allows certain molecules or ions to pass through by diffusion but not others.