Science

• Cell Membrane, It regulates the entry and exit of materials
• Cytoplasm, It holds the organelles in placce
• Mitochondrion, It provides energy for the cell and considered as the powerhouse of a cell
• Vacuole, It is an enclosed space. It is where materials are stored such as water and nutrients
• Golgi Apparatus, Sorts, packages and modifies protein for secretion
• Ribosomes, Are tiny globular nucleoprotein particles considered to be the site of protein synthesis
• Rough Endoplasmic Reticulum, contains the structure ribosomes, Ribosomes helps in producing protein.
• Smooth Endoplasmic Reticulum, they dont contain any ribosomes, they are responsible in producing fats. They convert harmful subtances to harmless
• Lysosome, It containes enzymes responsible for the digestive activities of the cell
• Nucleus, It regulates and controls all the activities in the cell
• Robert Hooke observed that it was composed of many tiny boxes like compartments, He named this compartments as CELLS
• Anton Van Leeuwenhoek, He was able to discover microorganisms (protozoa)
• Theodor Schwann, He discovered that animals were also made up of cells
• Matthias Schleiden, He discovered that plants were made up of cells
• Rudolf Virchow, He stated that new cells come from pre-existing cells through division
• Robert Brown, he discovered the nucleus
• Cell Membrane is called the gate of the cell
• The Cytoplasm is where most cell activities occur
• Mitochondrion provides energy for the cell in the form of Adenosine Triphosphate or ATP (acronym)
• The Vacuole is called the warehouse of the cell
• The Golgi Apparatus is the “Packaging area of the cell”
• Protein is required for many activities in the cell.
•  Lysosome - “Suicidal bag of the cell”
• The lysosome breaks down complex materials
• The Nucleus is the “brain of the cell”
• Three components of the nucleus are the nucleolus, nucleoplasm, and chromosomes
• Multicellular living things are made of many cells
• Unicellular living things are single-celled
• Prokaryotic cell has no definite nucleus and has a few organelles not in the membrane bound region
• All types of bacteria are prokaryotic cells.
• Eukaryotic cell has a definite nucleus and membrane-bound organelles
• Plant and animal cells are eukaryotic cells.
• Chloroplasts can only be found in plant cells
• The cell wall protects the plant cells and gives shape to the plant.
• Centrioles occur in pairs, they help in the development of spindle fiber in cell division.
• THE CELL THEORY OF BIOLOGY states that..

  • Cells are the basic unit of life
  • All organisms are composed of cells
  • Every cell comes from a pre-existing cell
  • Cells of multicellular organisms are interconnected, allowing it to function as a single unit.