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College Macromolecules Questions

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College Macromolecules
Which of the following BEST summarizes the relationship between dehydration reactions and hydrolysis?
  1. Dehydration reactions can occur only after hydrolysis.
  2. Dehydration reactions occur only in animals, and hydrolysis reactions occur only in plants.
  3. Hydrolysis creates monomers, and dehydration reactions destroy them.
  4. Hydrolysis creates polysaccharides, and dehydration creates monosaccharides.
  5. Dehydration reactions assemble polymers, and hydrolysis breaks them down.
College Macromolecules
Select all that are part of a nucleotide.
  1. A five-carbon sugar
  2. A phosphate group
  3. a nitrogenous base
  4. an oxygen base
  5. an alcohol base
  6. 3 deoxyribose
College Macromolecules
Organic molecules containing carboxyl groups are                  .
  1. Acidic
  2. nonpolar
  3. basic
  4. none of the above
College Macromolecules
Which of these occurs at the end of a chemical reaction?
  1. an enzyme's structure is altered
  2. an enzyme is detached from the product, has its original structure, and can catalyze more chemical reactions
  3. the enzyme loses its ability to catalyze other chemical reactions
  4. the enzyme remains attached to the products
  5. none of the above
College Macromolecules
Which of these makes up sucrose?
  1. glucose and galactose
  2. glucose and glucose
  3. fructose and galactose
  4. fructose and glucose
College Macromolecules
What type of carbohydrate is a complex sugar?
  1. monosaccharide
  2. disaccharide
  3. both
  4. Neither
College Macromolecules
Which of the following statements regarding membrane protein function is false?
  1. membrane proteins serve as enzymes
  2. membrane proteins act as receptors to molecules
  3. membrane proteins serve as active transporters of molecules
  4. membrane proteins form junctions between cells
  5. membrane proteins cause the plasma membrane to be selectively permeable
College Macromolecules
Cx H2x Ox is an example of                .
  1. Carbohydrate
  2. Lipids
  3. Protein
  4. Nucleic Acids
College Macromolecules
Which statement describes the quaternary structure of a protein?
  1. the sequence of amino acids in the polypeptide
  2. the coiling or folding of the polypeptide
  3. the intertwining of two or more polypeptides
  4. the 3-dimensional appearance of the polypeptide
  5. none of the above
College Macromolecules
What is the optimal temperature range for the majority of enzymes?
  1. 40-55 C
  2. 35-40 C
  3. 25-30 C
  4. 15-20 C
  5. 45-50 C
College Macromolecules
Which action could produce a carbonyl group?
  1. the replacement of the --OH of a carboxyl group with hydrogen
  2. the addition of a thiol to a hydroxyl
  3. the addition of a hydroxyl to a phophate
  4. the replacement of the nitrogen of an anime with oxygen
College Macromolecules
The enzyme amylase can break glycosidic linkages between glucose monomers only if the monomers are in the alpha form. Which of the following could amylase break down?
  1. glycogen, starch, and amylopectin
  2. glycogen and cellulose
  3. cellulose and chitin
  4. starch, chitin, and cellulose
College Macromolecules
Which aren't properties of nucleic acid?
  1. large complex molecule
  2. stores and transports information
  3. includes DNA
  4. can act as enzymes
  5. have a pH of 8-14
College Macromolecules
Organic Molecules contain which two elements?
  1. Carbon and Hydrogen
  2. Oxygen and Hydrogen
  3. Oxygen and Carbon
  4. Nitrogen and Oxygen
College Macromolecules
Which of the following is a monosaccharide?
  1. Glucose
  2. lactose
  3. cellulose
  4. sucrose
College Macromolecules
Which of the following is not a polysaccharide?
  1. Amylose
  2. Cholesterol
  3. Glycogen
  4. Chitin
  5. Starch
College Macromolecules
Cortisol is an example of                .
  1. Carbohydrate
  2. Lipids
  3. Protein
  4. Nucleic Acids
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