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Bio 111
Chem-Bio
40
Biology
Undergraduate 1
10/16/2025

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Term
What is a Hydrogen Bond?
Definition
An electrostatic attraction between a hydrogen atom and an electronegative atom
Term
What type of Bond involves sharing Electrons?
Definition
Covalent Bond
Term
What type of Bond involves attraction between charged ions?
Definition
Ionic Bond
Term
In a polar covalent bond, how are charges distributed?
Definition
One atom is partially positive (δ⁺), the other partially negative (δ⁻).
Term
Is an Ionic Interaction considered a covalent bond?
Definition
No
Term
Which Bonds break when water vaporizes?
Definition
Hydrogen Bonds
Term
Is Ice more or less dense than liquid water?
Definition
Less Dense
Term
Why is Water Polar?
Definition
Oxygen is more electronegative, causing uneven charge distribution.
Term
What does Hydrophilic mean?
Definition
Water loving; Dissolves easily in water
Term
What does Hydrophobic mean?
Definition
Water fearing; Doesn't dissolve in water
Term
Molecules with both hydrophobic and hydrophilic regions are called?
Definition
Amphipathic
Term
Q: In a solution, which is dissolved—the solute or solvent?
Definition
Solute
Term
More hydrogen ions (H⁺) means what pH?
Definition
Lower pH (more acidic).
Term
Monomers of Carbohydrates?
Definition
Monosaccharides
Term
Carbohydrate Monomer?
Definition
Glucose - C6H12O6
Term
Plants store glucose as ???; animals store it as ???
Definition
Starch, Glycogen
Term
What is cellulose used for in plants?
Definition
Structural Support in Cell Walls
Term
What are the bonds between sugar molecules called?
Definition
Glycosidic Bonds
Term
What are fats and oils made of?
Definition
Glycerol and Three Fatty Acid - Triglycerides
Term
Saturated V.S. Unsaturated Fatty Acid?
Definition
Saturated --> No Double Bond; Unsaturated --> Double Bonds (one or more)
Term
Main components of cell membranes?
Definition
Phospholipids and Proteins
Term
Which part of a Phospholipid is hydrophobic?
Definition
Fatty Acid Tails
Term
What part of a Phospholipid is hydrophilic?
Definition
Phosphate Head
Term
What are the building blocks of proteins?
Definition
Amino Acids
Term
What bond joins Amino Acids together?
Definition
Peptide Bonds
Term
What are the ends of Polypeptides called?
Definition
Amino Terminus and Carboxyl Terminus --> N and C Terminus
Term
Levels of Protein Structure?
Definition
Primary, Secondary, Tertiary, Quaternary
Term
Example of Secondary Structures?
Definition
Alpha Helix and Beta Sheet
Term
What protein structures are destroyed by denaturation?
Definition
Secondary and Tertiary
Term
What Type of Structure is a Beta Sheet?
Definition
Secondary
Term
The Information to make proteins is found in water?
Definition
Genes (DNA)
Term
Bond Linking Nucleotides in nucleic acids?
Definition
Phosphodiester Bond
Term
RNA and DNA are both made of what subunits?
Definition
Nucleotides
Term
Where is Genetic Material located in Prokaryotes?
Definition
Nucleoid
Term
Cell Theory
Definition
1: All living things are made of Cells
2: The Cell is the basic unit of life
3: All Cells come from existing cells
Term
Maintaining a stable environment is called?
Definition
Homeostasis
Term
How are Phospholipid arranged in membranes?
Definition
Bilayer, Fatty Acid tails face inwards
Term
The Core/Interior of a membrane is ???
Definition
Hydrophobic
Term
Which Substances easily pass through the membrane?
Definition
Small, Nonpolar (Hydrophobic Molecules)
Term
Peripheral membrane proteins are located where?
Definition
On the surface of the Membrane
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