cells

• The ribosomes are responsible for protein synthesis within the cell.
• Mitochondria produce energy that the cell needs to function.
• The nucleus is the control center of the cell, containing DNA.
• The nucleus contains the cell's DNA and controls cellular activity.
• The cell wall surrounds and protects the plant cell and is made of cellulose fibers arranged in layers.
• Ribosomes can be found floating freely or attached to the endoplasmic reticulum (ER).
• The lysosomes are responsible for breaking down waste materials and cellular debris within the cell.
• The cell membrane is a selectively permeable barrier that surrounds the cell and regulates the movement of substances in and out of the cell.
• Free ribosomes produce proteins that remain inside the cytoplasm, while ER-bound ribosomes produce proteins destined for export from the cell.
• Lysosomes break down old or damaged organelles and other materials within the cell.
• Vacuoles store water, nutrients, and waste products inside plant cells.
• Chloroplasts contain chlorophyll and are found only in plant cells.
• Ribosomes are involved in protein synthesis.
• Lysosomes contain digestive enzymes that break down molecules into smaller components.
• cell structures: Nucleus, Cell Membrane, Mitochondria, Cytoplasm, Ribosome, ER, Golgi, Cell Wall, Chloroplast

  and Vacuole (larger in plant cells)
• Mitosis: when a parent cell duplicates its DNA the splits into two daughter cells.
• • Prokaryote cells – cells without a membrane-bound nucleus and membrane-bound organelles.​
• • Eukaryote cells – cells having a membrane-bound nucleus, membrane-bound organelles and chromosomes in which DNA is combined with histone proteins.​
• Bacteria are single celled organisms
• Nerve cells

   Transmits electrical nerve impulses from the central to peripheral nervous system.

   

  The long axons allow impulses to travel long distances at rapid speeds.
• Bone cells

  Bone cells provide structural strength and support for the skeleton. Bone cells are small and packed closely together which helps to increase strength of the structure. They are also involved in the production and storage of white blood cells, which are apart of the immune system.
• Muscle cells

  They allow relaxation and contraction of muscle fibres enabling a range of movements within the body to occur. generally long and thin and grouped in bands. This helps to strengthen and support the movement taking place. Muscle cells are also made of collagen, which is a strong and malleable protein which allows flexibility of movement.
• Red blood cells

  Red blood cells transport oxygen from the lungs to peripheral cells where the oxygen is needed for cellular respiration. Red blood cells lack a distinct nucleus. Cell turnover is very high

   
• prokaryotic cells are cells that do not have a nucleus, they are found in singular celled organisms, such as bacteria.
• Eukaryotic cells are cells that have a nucleus and other organelles such as mitochondria, chloroplasts, ER, Golgi apparatus and lysosomes. found in organisms such as animals, plants and fungi.