The Survival of Most Organisms Is Immediately Threatened If They

question 29

Multiple Choice

The survival of most organisms is immediately threatened if they live at the site of a catastrophic forest fire,volcanic eruption or dust storm.These events,however can launch soot,ash or dust into different levels of the atmosphere,measurably lowering available sunlight at locations thousands of miles from the site.The _____ are most quickly and strongly impacted at these distances,with lack of growth and reproduction.

• A) autotrophs, such as crops and woodlands
• B) heterotrophs, such as humans and livestock
• C) deep-sea thermal vent communities
• D) All of these will be impacted with similar severity.

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Definitions:

Tertiary Structure

The three-dimensional structure of a protein molecule formed by bends and folds that are stabilized by various bonds and interactions among amino acids.

Protein Molecule

A large, complex molecule made up of one or more chains of amino acids, essential for the structure, function, and regulation of the body's tissues and organs.

Polypeptide Chain

A single linear chain of amino acids bound together by peptide bonds, forming part of or the whole protein molecule.

Ionic Bonds

Chemical bonds formed between two ions with opposite charges through the transfer of electrons.