biology 2A

  1. which is genetic material found in:
    bacteria cells or animal cells
    animal cells
  2. name five parts of a cell that are in both animal and plant cells
    • 1)nucleus
    • 2)cell membrane
    • 3)ribosomes
    • 4)mitochondria
    • 5)cytoplasm
  3. what is diffusion
    the spreading of particles from an area of high concentration to an area of low concentration
  4. name three substances that can diffuse through cell membranes
    oxygen,amino acids and water
  5. give three ways palisade leaf cell is adapted for photosynthesis
    • 1) packed with chloroplasts for photosynthesis. more of them are crammed at the top of the cell.
    • 2)tall shape means a lot of surface area exposed down the side for absorbing CO2 from the air in the leaf.
    • 3)thin shape means that you can pack loads of them in at the top of a leaf. palisade leaf cells are grouped together at the top of the leaf where most of the photosynthesis happens
  6. give three ways that a sperm cell is adapted to be able to swim to the egg.
    it has a long tail and a streamlined head to help it swim to the egg. They is also lots of mitochondria to proved the energy needed.
  7. what is a tissue
    a tissue is a group of similar cells that work together to carry out a particular function.
  8. what is an organ.
    An organ is a group of different tissues that work together to perform a certain function.
  9. give three examples tissue of in the human body.
    • 1)muscular tissue
    • 2)glandular tissue
    • 3)epithelial tissue
  10. name one organ found in the human body
    digestive system
  11. give an example of an plant tissue.
    mesophyll tissue
  12. what is the equation of photosynthesis.
    carbon dioxide + water >glucose + oxygen
  13. what is the green substance in the leaves that absorbs sunlight.
  14. name three factors that can limit the rate of photosynthesis.
    • 1) at night=no light
    • 2) in winter= low temperature
    • 3)the amount of CO2
  15. why is glucose turned into starch.
    Glucose is turned into starch and stored in roots, stems and leaves, ready for the use when photosynthesis isn't happening, like in winter.
  16. give four ways that plants use the glucose produces by photosynthesis.  
Card Set
biology 2A
cells,specialised cells,photosynthsis