Biology Vocabulary Quiz

Study Notes

Cell: Fundamental unit of life, forming the basis of all living organisms; encompasses various functions essential for life.
Virus: Microscopic infectious agent dependent on host cells for replication; lacks cellular structure and cannot reproduce independently.
Bacteria: Diverse group of unicellular organisms; some species are beneficial (e.g., gut bacteria), while others can lead to illness.
Theory: A comprehensive and well-substantiated explanation of natural phenomena, formulated based on rigorous evidence and observations.

Reproduce: Essential biological process by which organisms produce offspring, maintaining the continuity of species.
Eukaryotic Cells: Characterized by a defined nucleus and complex organelles; generally larger than prokaryotic cells and found in animals, plants, fungi, and protists.
Prokaryotic Cells: Simplistic, single-celled organisms lacking a nucleus and membrane-bound organelles; include bacteria and archaea.
Unicellular Organisms: Comprised of a single cell; examples include bacteria and some protists.
Multicellular Organisms: Composed of multiple cells that work collaboratively; examples include plants and animals.

Nucleus: Central organelle housing genetic material (DNA) that orchestrates cellular activities, including growth and reproduction.
Membrane: Protective lipid layer that encircles the cell, regulating the movement of substances in and out, maintaining homeostasis.
Vacuole: Storage structure within cells, utilized for holding a variety of substances like nutrients, waste, and water.
Chloroplast: Specialized organelle in plant cells enabling photosynthesis; converts solar energy into chemical energy (glucose).
Mitochondria: Key organelles known as the cell's powerhouses; responsible for energy production through respiration and metabolism.
DNA: Molecule crucial for life, containing hereditary instructions that guide the development, functioning, and reproduction of organisms.