Cell structure

• The human body is made up of trillions of cells, which are the basic building blocks of life.
• Cells can be classified into different types based on their structure and function.
• Bacteria are prokaryotes with a single circular chromosome containing all the genes needed to survive.
• Prokaryotic cells do not have a nucleus or any other membranous structures within them.
• Bacteria are single-celled microorganisms with simple structures and no true nuclei.
• Eukaryotic cells are complex and include all animal and plant cells.
• Eukaryotes are organisms made up of eukaryotic cells
• prokaryote is a prokaryotic cell. they are single-celled organism
• Ribosome - The site of protein synthesis
• animal Cells contain

  • Cell membrane
  • Nucleus
  • Ribosomes
  • Cytoplasm
  • Mitochondria
• plant cells contain

  Cell wall

  Chloroplasts

  valcuole
• Cell membrane - controls what enters and exists the cell
• nucleus - controls the cells activity’s
• ribosomes - help with protein synthesis
• cytoplasm - is where chemical reactions occur
• Mitochondria - site of aerobic respiration
• cell wall - keeps the cell structure
• vacuole - contains cell sap, suports the cell
• chloroplasts - absorb light energy for photosynthesis
• Plant and animal cells are eukaryotic cells
• prokaryotic cells have no nucleus
• prokaryotic cells DNA is found in the cytoplasm
• bacteria is a prokaryotic cell
• specialised cells are cells that have been made for a specific purpose
• some examples of plant specialised cells are root hair cells
• Xylem transports water
• phloem transports sugars and minerals
• sperm, nerve and muscle cells are all animal specialised cells
• Cells become specialised through differentiation
• differentiation - genes are turned off in each cell to change shape or structure in order to carry out particular functions
• Undifferentiated cells are known as stem cells
• Plant to differentiate through their life
• Animal cells differentiate at an early stage once they are specialised very few can change
• In order to replace damagedor dead cells mitosis is used