1. Unit 2 test Review Cells

2. Which cell structure contains the cell’s genetic material and controls many of the cells activities? Organelle Nucleus Cell envelope cytoplasm

3. Cells fall into two broad categories, depending on whether they Have a cell wall Contain chloroplasts Have a nucleus Contain genetic material

4. Eukayotes usually contain: Genetic material Specializec organelles A nucleus All of the above

5. Which of the following is NOT found in the nucleus? Nucleolus chromatin Cytoplasm DNA

6. Which structures carry out cell movement? Chromosomes Microtubules and microfilaments Nucleolus cytoplasm and ribosomes

7. Which organelle breaks down compounds into small particles that the cell can us? Golgi apparatus lysosome Endoplasmic reticulum Mitochondrion

8. Which organelle makes proteins using coded instructions that come from the nucleus? Golgi apparatus Mitochondrion Vacuole Ribosome

9. Which organelle converts the chemical energy stored in food into compounds that are more convenient for the cell to use? Mitochondria Endoplasmic reticulum Golgi apparatus chloroplast

10. Which of the following is a function of the cell membrane? Breaks down lipids, carbohydrates, and proteins from foods Regulates which materials enter and leave the cell Keeps the cell wall in place Stores water, salt, proteins and carbohydrates

11. Diffusion occurs because: Molecules constantly move and collide with one another Molecules never move or collide with one another The concentration of a solution is never the same throughout a solution The concentration of a solution is always the same throughout a solution.

12. An animal cell that is surrounded by fresh water will burst because the osmotic pressure causes Water to move into the cell Water to move out of the cell Solutes to move into the cell Solutes to move out of the cell

13. The cells of multicellular organisms are: Not dependent on one another Specialized to perform particular functions simpler than those of unicellular organisms Smaller than those of unicellular organisms.

14. Who was the first person to identify and see cells? Anton van Leeuwenhoek Matthias Schleinden Robert Hooke Rudolf Virchow

15. The thin, flexible barrier around a cell is called the Cell wall Cell envelope Cytoplasm Cell membrane

16. Prokaryotes lack Cytoplasm A nucleus Genetic material A cell membrane

17. Which of the following contain a nucleus? Bacteria Organelles Eukaryotes Prokaryotes

18. The main function of a cell wall is to Store DNA Support and protect the cell Direct the activities of the cell Help the cell move

19. Which of the following is a function of the nucleus? Controls most of the cell’s processes Contains information to make proteins Stores DNA All of the above

20. Which of the following is a function of the cytoskeleton? Contains DNA Helps keep the cell in shape Surrounds the cell Helps make proteins

21. Which of the following is an organelle found in the cytoplasm? Ribosome Nucleolus Chromatin Cell wall

22. Which organelle would you expect to find in a plant cells? Mitrochondria Chloroplast Ribosome Smooth endoplasmic reticulum

23. Which of the following structures serves as the cell’s boundary from its environment? Chloroplast Channel proteins Cell membrane Mitochondrion

24. Diffusion is the movement of particles from An area of low concentration to an area of high concentration An area of equilibrium to an area of high concentration An area of high concentration to an area of low concentration All of the above

25. The diffusion of water across a selectively permeable membrane is called Osmosis Osmotic pressure Facilitated diffusion Active transport

26. Which term refers to cells having different tasks in an organism? Multicellular Cell specialization Unicellular Levels of organizaton

27. Mathching: Know the functions of these organelles: Nuclueus Mitochondria Free ribosomes Vacuole Endoplasmic reticulum nuceolus Golgi apparatus Chloroplast Centrioles Lysome Cytoskeleton Cell wall

28. Answers to matching Assembles proteins Powerhouse: creates energy Storage janitor: contains enzymes for digestion Assembles lipid components of cell membrane Formation of ribosomes Capture energy from the sun Maintain shape Organize cell division Modify, sort, and package proteins Provide support and protection for plant cell Contains genetic material for cell instructions.