First Semester Final Exam

Front

What distinguishes different amino acids from one another?

Back

The chemical structure of the R group in the molecule.

Front

What is the main difference between prokaryotic and eukaryotic cells?

Back

Eukaryotic cells have a nucleus.

Front

What occurs in a chemical reaction as it proceeds?

Back

The rearrangement of electrons to break or form chemical bonds.

Front

What unique structure can be found in lipids but not in carbohydrates, proteins, or nucleic acids?

Back

A long chain made only of carbon and hydrogen atoms.

Front

How do buffers in human blood affect pH?

Back

Buffers prevent small amounts of acid or base from changing the pH of blood.

Front

What is an amino acid?

Back

A building block of proteins, consisting of an amino group, a carboxyl group, and an R group.

Front

What is the function of enzymes in biological reactions?

Back

Enzymes act as catalysts to speed up chemical reactions without being consumed.

Front

What is the role of the nucleus in eukaryotic cells?

Back

The nucleus houses the cell's genetic material and controls cellular activities.

Front

What is a lipid?

Back

A group of organic compounds that are insoluble in water, including fats and oils.

Front

What is the pH scale?

Back

A scale that measures the acidity or basicity of a solution, ranging from 0 to 14.