Our Textbook Discusses That Radio Astronomers Are Building More and More

question 24

Multiple Choice

Our textbook discusses that radio astronomers are building more and more arrays of radio telescopes, where many "dishes" are connected together. What advantage do such arrays have?

• A) they can look through clouds in the Earth's atmosphere, which individual dishes can't do
• B) they can allow us to split the radio waves into a spectrum, which individual dishes can't
• C) they provide a higher resolution than individual dishes
• D) they can be built on flat ground, while individual dishes have to built on very tall mountains
• E) none of the above
• Section 6.5: Observations Outside the Earth's Atmosphere

---

Definitions:

T-tubules

Tubular extensions of the plasma membrane that penetrate into the center of skeletal and cardiac muscle cells, facilitating the transmission of electrical impulses.

Sarcolemma

The sarcolemma is the fine transparent tubular sheath that envelops the fibers of skeletal muscles.

Sarcoplasmic Reticulum

A specialized type of endoplasmic reticulum found in muscle cells, involved in the regulation of calcium ions to facilitate muscle contraction.

Sarcomere Contraction

The process by which muscle fibers contract, shortening the sarcomere, the basic unit of muscle fiber, thereby generating force.