Bio

• What is magnification in microscopy?

  Magnification is how much larger an image is than real life.
• What is resolution in microscopy?

  Resolution is the ability to tell apart 2 or more objects which are close together.
• What are the two most important factors when using a microscope?

  Magnification and resolution.
• How is magnification calculated?

  Magnification = image size ÷ real size.
• What is the hierarchy of biological organization from cells to organisms?

  • Cells
  • Tissues
  • Organs
  • Organ systems
  • Organism
• What is a tissue?

  It means that more than one cell is working together to perform a job.
• What is an organ?

  It is when more than one tissue is working together to perform a job.
• What is an organ system?

  It is when more than one organ is working together to perform a job.
• What is an organism?

  It is when two or more organ systems work together to perform a job.
• Cells are the building bricks for life
• What is flagella and its function?

  Flagella is an adaptation of a single-celled organism which allows it to move around and avoid being eaten.
• What are pseudopodia and their function?

  Pseudopodia are small, finger-like projections of a single-celled organism which help it to move and catch food.
• What is diffusion?

  Diffusion is the movement of particles from a higher concentration to a lower concentration.
• What factors affect diffusion?

  • Temperature (increases with temperature)
  • Surface area (increases with surface area)
  • Concentration gradient (more dramatic gradient = more diffusion)