The Weak Force

question 188

Multiple Choice

The weak force

• A) acted only during the Big Bang and has no known role in the universe at the present time.
• B) holds the quarks together inside a proton or neutron.
• C) attracts the electrons to the nucleus, holding the atom together.
• D) acts during certain kinds of radioactive decay.

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Definitions:

Sharing Drug Needles

The unsafe practice of multiple individuals using the same needle for injecting drugs, increasing the risk of transmitting infectious diseases.

Incisional Biopsy

A surgical procedure where a small cut is made in the skin to remove a sample of tissue for examination, usually to diagnose diseases or conditions.

Excisional Biopsy

A surgical procedure where an entire lump or suspicious area is removed for diagnostic examination.

Sentinel Lymph Node

The first lymph node to which cancer cells are likely to spread from a primary tumor, often used in surgeries to assess cancer spread.