What Happened to the Quarks That Existed Freely During the Particle

question 21

Multiple Choice

What happened to the quarks that existed freely during the particle era?

• A)They combined in groups to make protons,neutrons,and their antiparticles.
• B)They froze out of the soup of particles at the end of the era.
• C)They evaporated.
• D)They combined in groups to make electrons and neutrinos.
• E)They combined in groups to make W and Z bosons.

Understand the concept of conjugation and its effect on the spectral properties of compounds.

Explain the relative solubility of organic compounds in water.

Understand synthetic routes for transforming one organic compound to another.

Recognize the reagents and conditions required for specific organic transformations.

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Definitions:

Myelin

A fatty substance that surrounds the axons of many neurons, facilitating rapid signal transmission.

Hypothalamus

A subcortical forebrain structure involved in regulating bodily functions. The hypothalamus also influences our basic motivated behaviors.

Bodily Functions

The physiological processes and activities performed by the body's systems, necessary for maintaining life and health.

Electroencephalographs (EEGs)

Devices that measure the electrical activity of the brain through electrodes placed on the scalp.