Unit 1 Lesson 3, 4, 5 & 6 Vocab

4. a process of cell division that forms two nuclei each of which has the same number of chromosomes.
8. is the arrangement of parts in an organism or an object.
10. the process by which a cell uses energy to surround a particle and enclose the particle in a vesicle to bring the particle into the cell.
12. a rigid structure that surrounds the cell membrane.
13. is a system of flattened membrane sacs.
14. a fluid-filled vesicle found in the cells of most animals, plants and fungi.
16. the movement of particles across a cell membrane without the use of energy by the cell.
17. is the organelle that makes proteins by putting together chains of amino acids.
18. the process by which cells use oxygen to produce energy from food.
19. the structure of a cell, tissue, or organ.
21. organelle where photosynthesis occurs.
22. when particles are enclosed in a vesicle and released from a cell.
23. a process by which plants, algae and some bacteria make their own food.

1. is the movement of particles against a concentration gradient and requires the cell to use energy.
2. is the diffusion of water through a semi-permeable membrane.
3. cellular respiration occurs in this organelle.
5. is a group of similar cells that per form a common function.
6. is a group of organs that work together to perform body functions.
7. contain digestive enzymes which break down worn-out or damaged organelles, waste materials, and foreign invaders.
9. is a living thing that can carry out life processes by itself.
10. assists in the production, processing and transport of proteins and in the production of lipids.
11. is the movement of molecules from high concentrations to low concentrations.
15. a structure made up of a collection of tissues that carries out a specialized function.
18. is a network of protein filaments that gives shape and support to cells.
20. chloroplasts contain a green pigment.
24. is the maintenance of a constant internal state in a changing environment.