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What type of chemical reaction results in the breakdown of organic polymers into their respective subunits?
Which of the following reactions requires the removal of water to form a covalent bond?
glucose + galactose - lactose
Which of the following summarizes the relationship between dehydration reactions and hydrolysis?
Dehydration reactions assemble to polymers, and hydrolysis breaks them down.
In dehydration synthesis, the atoms that make up a water molecule are derived from:
both of the reactants
Hydrolysis may be correctly described as the:
breaking of a compound into its subunits by adding water between the subunits
Keratin and silk are examples of ________, whereas glucose and maltose are examples of _________.
Dehydration synthesis involves the removal of a hydrogen ion and a hydroxyl ion. What happens next?
the hydrogen and hydroxyl ions interact to form water
How would a chemist describe phospholipids?
They have a polar nitrogen-phosphate head and two non-polar fatty acid tails.
Two classes of organic compounds typically provide energy for living systems. Representatives of these two classes are:
fats and polysaccharides
Which levels of structure are broken when a protein is denatured?
secondary, tertiary, and quaternary structure
What do carbohydrates, lipids, and proteins have in common?
covalent bonding holds these molecules together
Complex, three-dimensional, tertiary structures of globular proteins are characterized by:
The four polypeptides that are joined together to make hemoglobin represent which level of protein organization?
Which of the following may possess primary, secondary, tertiary, and quaternary structures?
Scientists consider prions to be puzzling proteins. Which of the following is TRUE about prions?
Prions are proteins that cause nearby proteins to change shape.
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