Grade 7 Biology

• Cells


  The basic units of life
• Cells


  • Have different parts like the nucleus, cytoplasm, and cell membrane
• Types of cells


  • Plant cells
  • Animal cells
• Plant cells


  • Have cell walls and chloroplasts for photosynthesis
• How cells reproduce


  1. Cells divide to make new cells for growth and repair

  2. Mitosis is the process of cell division
• Traits


  Passed from parents to offspring through genes
• Ecosystems


  Communities of living and non-living things
• Habitats


  Places where organisms live
• Food chains


  Show the flow of energy from one organism to another
• Food webs


  Show interconnected food chains in an ecosystem
• Adaptations for survival


  • Can be physical, behavioral, or physiological
• There are millions of different species of living organisms
• Organisms can be classified into groups based on similarities</b>
• Human activities


  Can have positive or negative effects on the environment
• Conservation efforts


  Aim to protect and preserve natural resources
• Diseases


  Can be caused by pathogens like bacteria, viruses, and parasites
• Maintaining good hygiene and a healthy lifestyle


  Can help prevent diseases