A Technique Called Flow Cytometry Is Used by Scientists and Researchers

question 29

Multiple Choice

A technique called flow cytometry is used by scientists and researchers to count or sort cells based on specific properties. By labeling cellular DNA with a fluorescent dye, flow cytometry can sort cells based on the amount of DNA present, thereby making it possible to distinguish between cells that are in different stages of the cell cycle. Flow cytometry is especially useful to the medical community because it can help with the diagnosis of certain types of cancers. Below is a typical set of data that you might obtain when running a flow cytometry experiment using a sample of healthy skin cells. Use this figure to help you answer the following questions. After reading the paragraph below, answer the questions that follow.
-Which peak represents cells that contain the most DNA?

• A) A
• B) B
• C) C
• D) It cannot be determined from this figure.

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Definitions:

Abnormal Phenomenon

Events or observed behaviors that deviate significantly from what is considered usual or typical.

Sexual Content

Material or media that includes explicit or implicit sexual references or activities.

Sexual Behavior

Actions or practices relating to the expression of sexuality, including physical intimacy and patterns of sexual activity.

Adolescents

Young people in the transitional stage of physical and psychological development that generally occurs during the period from puberty to legal adulthood.