Biochemical Molecules Quiz

Which of the following is an inorganic molecule?

Which organic molecule is a source of energy for the body?

Which type of molecule contributes to the structure of cell membranes?

Which molecule is responsible for storing genetic information in cells?

Which molecule is involved in catalyzing biochemical reactions in the body?

Which of the following is an example of an inorganic molecule?

Which organic molecule is responsible for energy storage in the body?

What type of molecule is DNA?

Which inorganic ion is important for nerve function and muscle contraction?

Which of the following is an example of an inorganic molecule?

Which of the following is a function of proteins in the cell?

Which molecule is responsible for storing genetic information in cells?

What type of molecule contributes to the structure of cell membranes?

Which organic molecule is responsible for energy storage in the body?

What is a function of proteins in the cell?

Inorganic Molecules

Inorganic molecules lack carbon-hydrogen (C-H) bonds.
Common examples include water (H2O), salts (NaCl), and minerals.

Organic Molecules as Energy Sources

Carbohydrates are primary organic molecules that provide energy for the body.
Key carbohydrate examples include glucose and starch.

Cell Membrane Structure

Phospholipids contribute significantly to the structure of cell membranes.
Proteins and cholesterol also play critical roles in membrane integrity and functionality.

Genetic Information Storage

DNA (deoxyribonucleic acid) is the molecule responsible for storing genetic information in cells.
DNA structures include sequences of nucleotides that encode genes.

Biochemical Catalysts

Enzymes are proteins that act as catalysts to accelerate biochemical reactions in the body.
They are vital for metabolic processes and maintaining homeostasis.

Inorganic Ions & Functions

Sodium ions (Na+) and potassium ions (K+) are essential inorganic ions for nerve function and muscle contraction.
Calcium ions (Ca2+) also play a significant role in muscle contraction and neurotransmitter release.

Energy Storage in Organic Molecules

Lipids, particularly triglycerides, are organic molecules responsible for energy storage in the body.
Glycogen, a polysaccharide, also serves as a short-term energy storage form in animals.

Proteins in Cells

Proteins perform multiple functions within cells including:
- Enzymatic activity.
- Structural support (e.g., collagen).
- Transporting molecules (e.g., hemoglobin).
- Immune responses (e.g., antibodies).

Summary of Molecule Types

DNA is classified as a nucleic acid.
Both organic and inorganic molecules play distinct but vital roles in biological systems.

Test your knowledge of biochemical molecules including inorganic molecules like water and ions, as well as organic molecules such as carbohydrates, lipids, proteins, and nucleic acids. Learn to identify and classify these molecules based on their properties and importance in biological systems.