What are the characteristics of life?
Define "biotic" and "abiotic." Give examples of each.
What do we mean when we talk about homeostasis?
Prokaryotes vs. Eukaryotes
It has a "nucleus" that contains the DNA (Deoxyribonucleic acid). The DNA is the genetic code for the cell. The nucleus is surrounded by two membranes that are capable of passing chemicals in and out of the nucleus.
The cell material that is outside of the nucleus is called the "cytoplasm." The cytoplasm contains various structures called "organelles" which perform specialized functions for the cell. (Organelles perform functions for the cell in much the same way that organs (heart, lungs, pancreas, etc.) perform functions for the human body. The outside of the cell is the cell membrane (also called plasma membrane) which handles the movement of chemicals in and out of the cell.
The ribosomes are the location for protein synthesis in the cell. Proteins are synthesized by combining amino acids into long chains or structures.
Vacuoles are organelles that provide for storage of key chemicals within the cell.
Lysosomes are organelles that provide cleanup, breakdown, and reuse of materials in the cell.
The mitochondria are the energy powerhouses of the cell.