What Problem Do Refractor Telescopes Have That Reflectors Don't

question 60

Multiple Choice

What problem do refractor telescopes have that reflectors don't?

• A) light loss from secondary elements
• B) bad seeing
• C) diffraction limited resolution
• D) atmospheric blurring
• E) chromatic aberration

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Definitions:

Sodium/Potassium Pump

A membrane protein that moves sodium ions out of cells and potassium ions into cells against their concentration gradients, essential for cellular function.

Pinocytosis

Process by which vesicle formation brings macromolecules into the cell.

Exocytosis

Process in which an intracellular vesicle fuses with the plasma membrane so that the vesicle’s contents are released outside the cell.

Endocytosis

Process by which substances are moved into the cell from the environment; includes phagocytosis, pinocytosis, and receptor-mediated endocytosis.