biology- crossword

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Across
  1. 3. A property of cell membrane that allows some molecules or ions to pass through while blocking others. This helps maintain a balance of substances inside and outside the cell
  2. 9. he process of spontaneous passive transport of molecules or ions across a biological membrane
  3. 11. the process by which cells take in substances from outside of the cell by engulfing them in a vesicle
  4. 12. exists when there is a region of high concentration leading to a region of low concentration
  5. 13. a protein embedded in the cell membrane that actively transports sodium ions out of the cell and potassium ions into the cell, using energy from ATP,
  6. 14. osmosis is the movement of water molecules from a solution with a high concentration of water molecules to a solution with a lower concentration of water molecules
Down
  1. 1. A double-layered arrangement of phospholips that makes up the cell membrane
  2. 2. a type of facilitated diffusion where molecules are moved across the membrane through a protein, without using energy.
  3. 4. the natural movement of particles from an area of higher concentration to an area of lower concentration due to random molecular motion
  4. 5. transport The movement of substances across the membrane without the use of energy it typically occurs along a concentration gradient, from high to low concentration
  5. 6. The process by which an organism or cell maintains a stable internal environment, despite external changes, to ensure optimal conditions for functioning
  6. 7. Transport The movement of a substance across the cell membrane against their concentration gradien, requiring energy
  7. 8. The ability to work or cause change In biological systems, energy is often stored in chemical bonds and is required for processes like, Transport, growth, and reproduction
  8. 9. Mosaic Model A model that describes the structure of the cell membrane, where the membrane is flexible and composed of the various molecules, such as proteins and lipids, arranged in mosaic pattern
  9. 10. a form of bulk transport during which large numbers of molecules are transported out of the cell