BioChem 210 Final Exam - Portage Learning
Question and Answer | 100% Correct Answers |
Exam Review Pack
• Small elements that are common in biomolecules: -✓✓CHOPS N:
- carbon
- hydrogen
- oxygen
- phosphorous
- sulfur
- nitrogen
• T/F: The time it takes for a compound to flow through a metabolic pathway is
called the flux. -✓✓true
• T/F: Proteins, carbohydrates, and fats all get broken down into NADH and
FADH2 in energy production. -✓✓true
• T/F: A fat is a lipid molecules that is a liquid at room temperature. -✓✓false
• In RNA, guanine always pairs with: -✓✓cytosine
• In RNA, adenine always pairs with: -✓✓uracil
• In DNA, adenine always pairs with: -✓✓thymine
• Water is considered a polar solvent due to attractive forces known as hydrogen
bonds. A hydrogen bond is: -✓✓an attractive force between molecules where
partially positive hydrogen atoms are attracted to partially negative atoms of F, O,
or N
• What is a London force? -✓✓a temporary attraction between atoms due to
electron alignment
• What is a dipole-dipole force? -✓✓an attraction between the positive end of one
polar molecule and the negative end of another
, • What attributes contribute to water's unusual properties? -✓✓1. geometry of the
molecule
2. polarity of the -OH bonds
3. ability of water molecules to hydrogen bond
4. body angle of water molecules to H bond
• The H+ concentration of a solution is 7.9 x 10^-13 M. What is the pH? -✓✓12.1
pH = -log(7.9 x 10^-13)
• What represents the free-energy change of a reaction? -✓✓ΔG = Gibbs free
energy
• What is the measure of heat content in a reaction? -✓✓ΔH = enthalpy
• What is the measure of order of the system in a reaction? -✓✓ΔS = entropy
• A fibrous protein is an example of a protein ___. -✓✓conformation
• What is an example of protein conformation? -✓✓fibrous and globular
• Any molecule or ion that is necessary for an enzyme's function is called: -
✓✓cofactor
• In a particular cell, molecules X binds to an enzyme causing to stop catalyzing
reactions. Molecule X is called what? -✓✓inhibitor
• What is the function of lipids in cells? -✓✓1. energy source/storage
2. structural role in membranes (myelin sheaths)
3. vitamins
4. basis for dye molecules (carotenoids)
• What is the function of carbohydrates in cells? -✓✓1. structural role in DNA and
RNA
2. intermediate in metabolism
3. energy source for cells
Question and Answer | 100% Correct Answers |
Exam Review Pack
• Small elements that are common in biomolecules: -✓✓CHOPS N:
- carbon
- hydrogen
- oxygen
- phosphorous
- sulfur
- nitrogen
• T/F: The time it takes for a compound to flow through a metabolic pathway is
called the flux. -✓✓true
• T/F: Proteins, carbohydrates, and fats all get broken down into NADH and
FADH2 in energy production. -✓✓true
• T/F: A fat is a lipid molecules that is a liquid at room temperature. -✓✓false
• In RNA, guanine always pairs with: -✓✓cytosine
• In RNA, adenine always pairs with: -✓✓uracil
• In DNA, adenine always pairs with: -✓✓thymine
• Water is considered a polar solvent due to attractive forces known as hydrogen
bonds. A hydrogen bond is: -✓✓an attractive force between molecules where
partially positive hydrogen atoms are attracted to partially negative atoms of F, O,
or N
• What is a London force? -✓✓a temporary attraction between atoms due to
electron alignment
• What is a dipole-dipole force? -✓✓an attraction between the positive end of one
polar molecule and the negative end of another
, • What attributes contribute to water's unusual properties? -✓✓1. geometry of the
molecule
2. polarity of the -OH bonds
3. ability of water molecules to hydrogen bond
4. body angle of water molecules to H bond
• The H+ concentration of a solution is 7.9 x 10^-13 M. What is the pH? -✓✓12.1
pH = -log(7.9 x 10^-13)
• What represents the free-energy change of a reaction? -✓✓ΔG = Gibbs free
energy
• What is the measure of heat content in a reaction? -✓✓ΔH = enthalpy
• What is the measure of order of the system in a reaction? -✓✓ΔS = entropy
• A fibrous protein is an example of a protein ___. -✓✓conformation
• What is an example of protein conformation? -✓✓fibrous and globular
• Any molecule or ion that is necessary for an enzyme's function is called: -
✓✓cofactor
• In a particular cell, molecules X binds to an enzyme causing to stop catalyzing
reactions. Molecule X is called what? -✓✓inhibitor
• What is the function of lipids in cells? -✓✓1. energy source/storage
2. structural role in membranes (myelin sheaths)
3. vitamins
4. basis for dye molecules (carotenoids)
• What is the function of carbohydrates in cells? -✓✓1. structural role in DNA and
RNA
2. intermediate in metabolism
3. energy source for cells
