A Main-Sequence Star Is Unique Because

question 62

Multiple Choice

A main-sequence star is unique because

• A) hydrostatic equilibrium exists at all radii.
• B) energy transport occurs via convection throughout much of its interior.
• C) hydrogen burning occurs in its core.
• D) it emits strong surface winds.

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Definitions:

Phospholipid Bilayer

A fundamental structure of cell membranes consisting of two layers of phospholipids, with hydrophobic tails and hydrophilic heads, forming a barrier.

Plasma Membrane

Membrane surrounding the cytoplasm that consists of a phospholipid bilayer with embedded proteins; functions to regulate the entrance and exit of molecules to and from the cell.

Archaea

A domain of single-celled microorganisms that are genetically distinct from bacteria and eukaryotes, often found in extreme environments.

Viral Replication

The process by which viruses reproduce by infiltrating host cells and using their machinery to create copies of themselves.