CHEM 210 Final Exam (5 sets of Final
Exam’s) Qs & As () (Verified
Answers)
T/F: Hydrogen is called the superglue of the chemical world. - Answer--false
carbon = superglue of the world
T/F: Small elements, such as nitrogen, are common in biomolecules. - Answer--true
Small elements that are common in biomolecules: - Answer--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. - Answer--true
T/F: Proteins, carbohydrates, and fats all get broken down into NADH and FADH2 in
energy production. - Answer--true
T/F: A fat is a lipid molecules that is a liquid at room temperature. - Answer--false
, In RNA, guanine always pairs with: - Answer--cytosine
In RNA, adenine always pairs with: - Answer--uracil
In DNA, adenine always pairs with: - Answer--thymine
Water is considered a polar solvent due to attractive forces known as hydrogen bonds.
A hydrogen bond is: - Answer--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? - Answer--a temporary attraction between atoms due to
electron alignment
What is a dipole-dipole force? - Answer--an attraction between the positive end of one
polar molecule and the negative end of another
What attributes contribute to water's unusual properties? - Answer--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? - Answer--12.1
pH = -log(7.9 x 10^-13)
What represents the free-energy change of a reaction? - Answer--ΔG = Gibbs free
energy
What is the measure of heat content in a reaction? - Answer--ΔH = enthalpy
What is the measure of order of the system in a reaction? - Answer--ΔS = entropy
A fibrous protein is an example of a protein ___. - Answer--conformation
What is an example of protein conformation? - Answer--fibrous and globular
Any molecule or ion that is necessary for an enzyme's function is called: -
Answer--cofactor
Exam’s) Qs & As () (Verified
Answers)
T/F: Hydrogen is called the superglue of the chemical world. - Answer--false
carbon = superglue of the world
T/F: Small elements, such as nitrogen, are common in biomolecules. - Answer--true
Small elements that are common in biomolecules: - Answer--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. - Answer--true
T/F: Proteins, carbohydrates, and fats all get broken down into NADH and FADH2 in
energy production. - Answer--true
T/F: A fat is a lipid molecules that is a liquid at room temperature. - Answer--false
, In RNA, guanine always pairs with: - Answer--cytosine
In RNA, adenine always pairs with: - Answer--uracil
In DNA, adenine always pairs with: - Answer--thymine
Water is considered a polar solvent due to attractive forces known as hydrogen bonds.
A hydrogen bond is: - Answer--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? - Answer--a temporary attraction between atoms due to
electron alignment
What is a dipole-dipole force? - Answer--an attraction between the positive end of one
polar molecule and the negative end of another
What attributes contribute to water's unusual properties? - Answer--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? - Answer--12.1
pH = -log(7.9 x 10^-13)
What represents the free-energy change of a reaction? - Answer--ΔG = Gibbs free
energy
What is the measure of heat content in a reaction? - Answer--ΔH = enthalpy
What is the measure of order of the system in a reaction? - Answer--ΔS = entropy
A fibrous protein is an example of a protein ___. - Answer--conformation
What is an example of protein conformation? - Answer--fibrous and globular
Any molecule or ion that is necessary for an enzyme's function is called: -
Answer--cofactor
