BIOCHEM RUTGERS CORE REVIEW ALL QUESTIONS
AND ANSWERS SURE A+
✔✔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
✔✔In a particular cell, molecule X binds near the active site on an enzyme causing it to
slow catalyzing reactions. Molecules X is called what? - ✔✔uncompetitive inhibitor
✔✔In a particular cell, molecule X binds to an enzyme at the active site causing it to
stop catalyzing reactions. Molecules X is called what? - ✔✔competitive inhibitor
AND ANSWERS SURE A+
✔✔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
✔✔In a particular cell, molecule X binds near the active site on an enzyme causing it to
slow catalyzing reactions. Molecules X is called what? - ✔✔uncompetitive inhibitor
✔✔In a particular cell, molecule X binds to an enzyme at the active site causing it to
stop catalyzing reactions. Molecules X is called what? - ✔✔competitive inhibitor
