Across
- 2. – a round body in the center of the cell that contains DNA and regulates gene expression.
- 3. – a hair-like structure that helps bacterial cells adhere to surfaces. Some pili are able to transfer genetic material to other cells.
- 4. – an organelle that converts the radiant energy of the Sun into chemical energy through the process of photosynthesis.
- 7. series of chemical reactions that convert energy in food molecules into ATP
- 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.
- 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.
- 14. – an organelle that uses oxygen to convert nutrients into energy that can be used by the cell.
- 16. – a small, sac-like package of nutrients, proteins, or water created by the Golgi apparatus. Types of vesicles include vacuoles and lysosomes.
- 17. series of reactions that convert light energy, water, and CO2 into glucose and give off oxygen
- 20. – a double-layered membrane that surrounds the cell. Also called the plasma membrane, it regulates what enters and leaves the cell.
- 21. – a hair-like organelle that helps a cell move.
- 22. – a double-layered membrane that surrounds and protects the nucleus.
- 23. – a stack of membranes that collects, modifies, and packages chemical compounds.
- 26. – a network of passageways in which chemical compounds are manufactured, processed, and transported.
Down
- 1. – a small body in the nucleus where ribosomes are synthesized.
- 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.
- 6. – a cell structure that performs a specific function.
- 9. – filaments, including actin, microtubules, and microfilaments, that aid in cell movement and give the cell its shape.
- 10. – a jelly-like substance, composed mainly of water, occupying most of the space between the cell membrane and the nucleus.
- 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.
- 12. – a tiny structure where proteins are synthesized
- 15. living things are made of one or more cells; the cell is the smallest unit of life; new cells come from preexisting cells
- 18. – a small sac, or vesicle, that contains digestive chemicals
- 19. – a bundle of microtubules that helps organize the movement of chromosomes during cell division.
- 24. – a small structure that can store food (leucoplast) or pigment (chromoplast).
- 25. – the rigid, porous outer layer of a plant cell.