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Bio 100 Chapter 2 review


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Many hydrogen bonds must be broken for water to evaporate. This requires a large amount of heat energy. When sweat evaporates, it absorbs heat from your skin, cooling it.
High Heat of Vaporization
Water molecules form an organized crystal structure when water freezes because of hydrogen bonding. The ice that results takes up more space, so it is less dense; this is why ice floats.
Ice Formation
Water dissolves most substances made of ions(such as salts)or polar molecules(such as ammonia)because the polar water molecules are attracted to the charges of ions or polar molecules, surrounding them and sparating them to form a solution.
High Polarity
Hydrogen bonds hold water molecules together. In plant, this helps to move water from the roots to the leaves.
Hydrogen bonds require considerable heat before they brak, minimizing temperature changes. This is why a large body of water wrarms and cools slowly.
Heat Storage
The___describes the way a protein folds to form complex, 3-dimensional globular structures.
tertiary structure
This substance is NOT an organic compound.
Salt (NaCI)
This nucleic acid is single-stranded, and contains the base uracil rather than thymine.
A simple sugar; the type of monomer used to build carbohydrates.
Glycogen is a plymer made up of many gulucose subunits. These subunits are assembled by_____reactions.
A(n)___is an organic polymer made of amino acids held together by peptide bonds.
The___of a protein is the sequence of amino acids in that protein.
primary structure
This double-stranded molecule is found in the nucleus, and contains the information needed to build all the proteins needed to run the cell.
During hydrolysis, is water a reactant or a product?
During dehydration, is water a reactant or a product?

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