Earth's Hot Deserts Are Characterized by Extremely Low Precipitation

question 8

Multiple Choice

Earth's hot deserts are characterized by extremely low precipitation.Their locations at latitudes approximately 30° north and 30° south of the equator result from

• A) the tilt of Earth's axis and the direction of Earth's rotation.
• B) sunlight striking Earth at the steepest angle at the 30°N and 30°S latitudes.
• C) warm equatorial air losing moisture as it rises, then descending due to high pressure at these latitudes.
• D) air at these latitudes retaining its moisture in the atmosphere rather than allowing it to fall to Earth as precipitation.
• E) equatorial air continuing to warm as it reaches the stratosphere, then releasing its moisture into the stratosphere before descending.

Evaluate the effects of amino acid substitutions on protein activity and structure.

Understand the principles of peptide and protein formation, including peptide bonds and the levels of protein structure.

Understand the biochemical properties and functions of amino acids in proteins.

Calculate the number of possible polypeptides given a certain number of amino acids.

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Definitions:

[H+]

[H+] represents the concentration of hydrogen ions in solution, commonly associated with acidity.

pH

A scale used to specify the acidity or basicity of an aqueous solution, ranging from 0 to 14.

[HCO3-]

[HCO3-] is the chemical notation for the bicarbonate ion, a key intermediate in the carbon dioxide transport and pH balance mechanisms in living organisms.

pH

A measure of the hydrogen ion concentration in a solution, indicating its acidity or alkalinity on a scale where 7 is neutral, lower values are acidic, and higher values are basic.