Cells CW 2

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Across
  1. 2. – a round body in the center of the cell that contains DNA and regulates gene expression.
  2. 3. – a hair-like structure that helps bacterial cells adhere to surfaces. Some pili are able to transfer genetic material to other cells.
  3. 4. – an organelle that converts the radiant energy of the Sun into chemical energy through the process of photosynthesis.
  4. 7. series of chemical reactions that convert energy in food molecules into ATP
  5. 8. – the outermost layer of a bacterial cell that prevents harmful materials from entering, keeps the cell from drying out, and protects the bacterial cell from the immune cells of other organisms.
  6. 13. – a small, circular piece of DNA separate from the genetic material in the nucleoid of a bacterial cell. Plasmids often contain genes that provide an advantage to the cell, like antibiotic resistance.
  7. 14. – an organelle that uses oxygen to convert nutrients into energy that can be used by the cell.
  8. 16. – a small, sac-like package of nutrients, proteins, or water created by the Golgi apparatus. Types of vesicles include vacuoles and lysosomes.
  9. 17. series of reactions that convert light energy, water, and CO2 into glucose and give off oxygen
  10. 20. – a double-layered membrane that surrounds the cell. Also called the plasma membrane, it regulates what enters and leaves the cell.
  11. 21. – a hair-like organelle that helps a cell move.
  12. 22. – a double-layered membrane that surrounds and protects the nucleus.
  13. 23. – a stack of membranes that collects, modifies, and packages chemical compounds.
  14. 26. – a network of passageways in which chemical compounds are manufactured, processed, and transported.
Down
  1. 1. – a small body in the nucleus where ribosomes are synthesized.
  2. 5. – a region inside a bacterial cell that contains genetic material. Unlike in plant and animal cells, the nucleoid in bacteria is not surrounded by a nuclear membrane.
  3. 6. – a cell structure that performs a specific function.
  4. 9. – filaments, including actin, microtubules, and microfilaments, that aid in cell movement and give the cell its shape.
  5. 10. – a jelly-like substance, composed mainly of water, occupying most of the space between the cell membrane and the nucleus.
  6. 11. – a type of vesicle that stores water, nutrients, and other chemicals. The large vacuole found in plant cells helps the cells maintain their shape.
  7. 12. – a tiny structure where proteins are synthesized
  8. 15. living things are made of one or more cells; the cell is the smallest unit of life; new cells come from preexisting cells
  9. 18. – a small sac, or vesicle, that contains digestive chemicals
  10. 19. – a bundle of microtubules that helps organize the movement of chromosomes during cell division.
  11. 24. – a small structure that can store food (leucoplast) or pigment (chromoplast).
  12. 25. – the rigid, porous outer layer of a plant cell.