Across
- 7. the maintenance of a constant internal state in a changing environment.
- 11. a group of similar cells that perform a common function.
- 13. a covalently bonded compound that contains carbon.
- 15. a fat molecule or a molecule that has similar properties examples includes oils,waxes,and steroids
- 16. the process in which a cell releases a particle by enclosing the particle in a vessel that then moves to the surface and fuses with the cell membrane.
- 17. acid-a molecule made up of subunits called nucleotides
- 18. a collection of tissues that carry out a specialized function of the body.
- 20. a green pigment that captures light energy for photosynthesis.
- 21. the movement of substances across the cell membrane that requires the cell to use the energy.
- 22. the process by wich cells use oxygen to produce energy from food.
- 23. the diffusion of water through a semipermeable membrane.
- 25. rigid structure that surrounds the cell membrane and provides support to the cell.
- 26. reticulum- a system of membranes that is found in a cell's cytoplasm and that assists in the production processing and transport of proteins and in the productions of lipids.
- 30. - a living thing that can carry out life processes independently.
- 32. the movement of substances across a cell membrane without the use of energy by the cell.
- 33. the process by which plants algae and some bacteria use sunlight carbon dioxide and water to make food.
- 34. smallest unit of an element that maintains the properties of that element.
Down
- 1. a molecule that is made up of amino acids and that is needed to build and repair body structures and to regulate processes del cuerpo.
- 2. the theory that states that all living things are made up of cells, that cells are basic organisms, that each cell in a multicellular organism has a specific job and that cells come from only existing cells.
- 3. the process by which a cell membrane surrounds a particle and encloses the particle in a vessel to bring the particle into the cell.
- 4. substance that can not be separated or broken down into simpler substances by chemical means.
- 5. the arrangement of parts is an organism.
- 6. the cytoplasmic network of protein filaments that plays an essential role in cell movement, shape and division.
- 8. a cell organelle that contains digestive enzymes.
- 9. the process by which cells use oxygen to produce energy from food.
- 10. a cell organelle composed of rna and protein the site of protein synthesis.
- 12. cell organelle that helps make a package of material to be transported out of the cell.
- 14. is eukaryotic cells a process of cell division that forms to new nuclei each of which has the same number of chromosomes.
- 19. a fluid filled vesicle found in the cytoplasm of plant cells or protozoans.
- 24. class of molecules that includes sugars, starches and fiber contains carbon hydrogen and oxygen.
- 27. a group of organs that work together to perform body function.
- 28. the special normal or proper activity of an organ or part.
- 29. the movement of particles from regions of higher destiny to regions of lower density.
- 31. is eukaryotic cells the organelle that is the site of cellular respiration which releases energy for use by the cell