Use the Following Information to Answer the Question(s) Below

question 21

Multiple Choice

Use the following information to answer the question(s) below.
Nucleotides can be radiolabeled before they are incorporated into newly forming DNA and, therefore, can be assayed to track their incorporation. In a set of experiments, a student-faculty research team used labeled T nucleotides and introduced these into the culture of dividing human cells at specific times.
-Which of the following questions might be answered by using the method described?

• A) How many cells are produced by the culture per hour?
• B) What is the length of the S phase of the cell cycle?
• C) When is the S chromosome synthesized?
• D) How many picograms of DNA are made per cell cycle?
• E) When do spindle fibers attach to chromosomes?

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Definitions:

Prelinguistic

Referring to vocalizations made by the infant before the development of language. (In language, words symbolize objects and events.)

Paralinguistic

Refers to the non-verbal elements in speech communication, such as tone of voice, loudness, tempo, and pitch, which can modify meaning and convey emotion.

Language Development

The manner in which young children develop the capacity to grasp and convey language during early childhood.

Environmental Stimulation

External factors or conditions which elicit responses or encourage developmental processes in an individual.