Which Group Consists Only of Amino Acids with Polar Side

question 80

Multiple Choice

Which group consists only of amino acids with polar side chains?

• A) serine, threonine, and leucine
• B) serine, threonine, and cysteine
• C) serine, threonine, and valine
• D) serine, threonine, and isoleucine

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Definitions:

Air Passage

The path through which air moves into or out of the respiratory system, including the nose, throat, and lungs.

Respiratory Organ

An anatomical structure that animals use for the exchange of gases with their environment, primarily oxygen and carbon dioxide; examples include lungs, gills, and tracheae.

Inhaled Air

Air drawn into the lungs through breathing, containing oxygen necessary for bodily functions.

Alveoli

Tiny air sacs within the lungs where gas exchange of oxygen and carbon dioxide occurs.