Portage Learning CHEM 210 Biochemistry Biochem
Final Exam questions and answers 2025\2026 A+
Grade
T/F: Hydrogen is called the superglue of the chemical world.
- correct answer false
carbon = superglue of the world
T/F: Small elements, such as nitrogen, are common in biomolecules.
- correct answer true
Small elements that are common in biomolecules:
- correct 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.
- correct answer true
T/F: Proteins, carbohydrates, and fats all get broken down into NADH and FADH2 in energy production.
- correct answer true
T/F: A fat is a lipid molecules that is a liquid at room temperature.
- correct answer false
, In RNA, guanine always pairs with:
- correct answer cytosine
In RNA, adenine always pairs with:
- correct answer uracil
In DNA, adenine always pairs with:
- correct answer thymine
Water is considered a polar solvent due to attractive forces known as hydrogen bonds. A hydrogen bond
is:
- correct 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?
- correct answer a temporary attraction between atoms due to electron alignment
What is a dipole-dipole force?
- correct 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?
- correct 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?
- correct answer 12.1
pH = -log(7.9 x 10^-13)
Final Exam questions and answers 2025\2026 A+
Grade
T/F: Hydrogen is called the superglue of the chemical world.
- correct answer false
carbon = superglue of the world
T/F: Small elements, such as nitrogen, are common in biomolecules.
- correct answer true
Small elements that are common in biomolecules:
- correct 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.
- correct answer true
T/F: Proteins, carbohydrates, and fats all get broken down into NADH and FADH2 in energy production.
- correct answer true
T/F: A fat is a lipid molecules that is a liquid at room temperature.
- correct answer false
, In RNA, guanine always pairs with:
- correct answer cytosine
In RNA, adenine always pairs with:
- correct answer uracil
In DNA, adenine always pairs with:
- correct answer thymine
Water is considered a polar solvent due to attractive forces known as hydrogen bonds. A hydrogen bond
is:
- correct 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?
- correct answer a temporary attraction between atoms due to electron alignment
What is a dipole-dipole force?
- correct 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?
- correct 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?
- correct answer 12.1
pH = -log(7.9 x 10^-13)
