Cygnus X-1 and LMC X-3 Are Black Holes If the Masses

question 74

Multiple Choice

Cygnus X-1 and LMC X-3 are black holes if the masses of the unseen companions perhaps may be

• A)less than 3 solar masses.
• B)more than 3 solar masses.
• C)between 0.4 and 1.4 solar masses.
• D)less than 0.4 solar masses.
• E)not larger than the masses of the stars that we can see.

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Definitions:

Plasma Membrane

The Plasma Membrane is the semi-permeable barrier that encloses the cytoplasm of a cell, controlling the movement of substances in and out, and playing a key role in cell communication and structure.

Adhering Junctions

Specialized structures in cells that function to hold cells together and to facilitate the passage of materials in the spaces between cells.

Tight Junctions

Specialized connections between neighboring cells that create a waterproof barrier to prevent leaking of extracellular fluid.

Functional Structures

Physical or organizational forms designed specifically to achieve a particular purpose or perform a specific task efficiently.