READ: Important Vocabulary Terms
READ: Important Vocabulary Terms
These are the most important vocabulary terms to learn this week. Please make sure you understand these terms.A cell is the smallest structural and functional unit of an organism.
Cell theory states that:
All organisms are composed of cells.
Cells are alive and the basic living units of organization in all organisms.
All cells come from other cells.
The plasma membrane (also called the cell membrane) is a thin coat of lipids that surrounds a cell.
Cytoplasm refers to all of the cellular material inside the plasma membrane, other than the nucleus.
Ribosomes are structures in the cytoplasm where proteins are made.
DNA is a nucleic acid found in cells. It contains the genetic instructions that cells need to make proteins.
A tissue is a group of connected cells that have a similar function. There are four types of tissues.
An organ is a structure made of two or more tissues that work together.
An organ system is a group of organs that work together to carry out a complex overall function. Each organ of the system does part of the larger job.
Prokaryotic cells are cells that don’t have a nucleus. Their DNA floats around inside the cell.
Eukaryotic cells are cells that have a nucleus. Their DNA is stored in the nucleus. Instead,
Prokaryotes are organisms with prokaryotic cells. All prokaryotes are single-celled organisms. Bacteria and Archaea are the only prokaryotes.
Eukaryotes are organisms with eukaryotic cells. Animals, plants, fungi, and protists are eukaryotes.
Organelles are the different parts of the cell.
