What Kind of Objects Are Thought to Be Identified with Flickering

question 9

Multiple Choice

What kind of objects are thought to be identified with flickering X-ray sources?

• A)Binary star systems containing black holes
• B)Supernova remnants like the Crab Nebula
• C)Pre-main sequence stars
• D)Main sequence stars on which flares occur

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Definitions:

Proto-oncogene

A normal gene that can become an oncogene due to mutations or increased expression, potentially leading to cancer.

Growth Factor

A naturally occurring substance capable of stimulating cellular growth, proliferation, healing, and cellular differentiation.

Interphase

Interphase is the phase of the cell cycle during which a cell prepares for division by growing in size, replicating its DNA, and conducting other normal cell functions.

Hereditary Material

Genetic material passed from parents to offspring, most commonly DNA, which carries the genetic instructions for growth, development, functioning, and reproduction of all known organisms and many viruses.