Isolated Quarks Were First Observed in

question 20

Multiple Choice

Isolated quarks were first observed in

• A) 1938.
• B) 1955.
• C) 1976.
• D) 2012, with the discovery of the Higgs boson.
• E) Isolated quarks have not been observed.

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Definitions:

Ringworm

Condition of the skin caused by a fungal infection.

Chytrids

A group of simple, aquatic fungi that are unique among fungi in having flagellated spores and representing the most primitive fungal phylum.

Kingdom

One of the categories, or taxa, used to group species; the taxon above the phylum level.

Fungi

A kingdom of spore-producing organisms that feed on organic material, including molds, yeast, mushrooms, and toadstools, distinct from plants and animals.