Why Do Massive Stars Use the CNO Cycle to Generate

question 54

Multiple Choice

Why do massive stars use the CNO cycle to generate energy,rather than the proton-proton chain?

• A) It is more temperature sensitive.
• B) Massive stars have more carbon.
• C) It produces more energy per helium nucleus.
• D) It uses up the carbon too quickly in low-mass stars.

---

Definitions:

Over-The-Counter

A decentralized market where securities that are not listed on formal exchanges are traded, usually through a network of dealers.

Cash Receipts

The collection of money, typically in the form of cash or checks, received by a business.

Electronic Cash Registers

Machines or systems used at retail checkout points to calculate and record sales transactions, accept payments, and store cash.

Designated Personnel

Individuals who are specifically chosen or assigned to carry out particular tasks or responsibilities.