unclassified

• The cell is the smallest unit of organization that can perform all activities required for life.
• The Cell Theory was first developed in the 1800s (First in 1839 by Theodor Schwann), based on the observation of many scientists.
• The Cell Theory states that all living organisms are made of cells, which are the basic unit of life.
• All cells share certain similar characteristics, such that all cells are enclosed by a membrane that regulates the passage of materials between the cell and its surroundings.
• There are two main forms of cells; Prokaryotic and Eukaryotic. 
• Prokaryotic Cells  are found in two groups of single-celled microorganisms, bacteria and archaea.
• Prokaryotic cells also lack a nucleus or other membrane-enclosed organelles.
• Furthermore, prokaryotic cells are generally smaller than eukaryotic cells.
• Eukaryotic Cells  contain membrane-enclosed organelles.
• Some organelles, such as the DNA-containing nucleus, are found in the cells of all eukaryotes; other organelles are specific to particular cell types.
• Chloroplasts is an organelle found only in eukaryotic cells that carry out photosynthesis.
• Each chromosome contains one very long DNA molecule with hundreds or thousands of genes.
• They are transmitted from parents to off-spring, genes are the units of inheritance.
• Genes encode the necessary information to build all of the molecules synthesized within a cell, which in turn establishes the cell’s identity and function.
• As the cells grow and divide, the genetic information encoded by the DNA directed the development.
• The molecular structure of DNA accounts for its ability to store information.
• A DNA molecule is made up of two long chains, called strands, arranged in a double helix.
• Each chain is made up of four nucleotides abbreviated as A (Adenine), T (Thymine), C (Cytosine), and G (Guanine).