Flashcardizz Review for Biology Fall Sem Exam 2024 Units 1-5

Front

What is an enzyme?

Back

A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.

Front

What is cytokinesis?

Back

The division of the cytoplasm of a cell that results in two new cells, occurring through a cell plate or cleavage furrow.

Front

What is a carbohydrate?

Back

A macromolecule that serves as the main source of energy in organisms and functions as an identification and communication molecule for cell membranes.

Front

What is a prokaryote?

Back

A unicellular organism that lacks membrane-bound organelles and is found in various locations throughout the world.

Front

What is the cell membrane?

Back

The outer layer of a cell that protects the cell by controlling what enters and exits, helping maintain homeostasis.

Front

What is homeostasis?

Back

The process by which living organisms regulate their internal environment to maintain stable, constant conditions.

Front

What are macromolecules?

Back

Large, complex molecules that are essential for life, including carbohydrates, proteins, lipids, and nucleic acids.

Front

What is the function of lipids?

Back

Lipids serve as long-term energy storage, make up cell membranes, and act as signaling molecules.

Front

What is the role of DNA polymerase?

Back

An enzyme that synthesizes new DNA strands by adding nucleotides to a growing DNA chain during DNA replication.

Front

What is the difference between prokaryotic and eukaryotic cells?

Back

Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic cells have a nucleus and organelles.