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Transcript
Chapter 7 Test Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. All living things are made up of _____. a. cells b. cork c. wastes d. cellulose 2. Because cells have a watery environment both inside and outside, the polar ends of the phospholipids in the plasma membrane form ____ layers a. several c. double b. mosaic d. single 3. If a cell contains a nucleus, it must be a(n) _____. a. plant cell b. eukaryotic cell c. animal cell d. prokaryotic cell 4. One advantage of electron microscopes over light microscopes is their _____. a. size c. two-dimensional image b. higher magnification d. use of live specimens 5. Each of the following is a main idea of the cell theory except _____. a. all organisms are composed of cells b. the cell is the basic unit of organization of organisms c. all cells are similar in structure and function d. all cells come from preexisting cells 6. Which of the following organisms do not have cell walls? a. plants c. bacteria b. fungi d. animals 7. What do electron microscopes use to focus and magnify an image? a. glass lenses c. electron beams b. X rays d. light 8. A cell's contents would be the same as its surroundings, were it not for ____. a. plasmolysis c. phagocytosis b. selective permeability d. dynamic equilibrium 9. The cell’s membrane structure has ____ of the cell. a. polar layers on the outside and a nonpolar layer on the inside b. nonpolar layers on the outside and a polar layer on the inside c. polar layers on both inside and outside d. nonpolar layers on both inside and outside 10. Which of the following might be a result of a disease that causes a thickened plasma membrane? a. increased movement of molecules entering the cell b. decreased movement of molecules within the cell c. decreased movement of molecules entering the cell d. increased movement of molecules leaving the cell 11. Because the phospholipid molecules and some proteins are free to move, the plasma membrane is said to be a ____. a. bilayer c. fluid mosaic b. solid d. fatty acid 12. A plasma membrane is made up of a(n) _____. a. cholesterol layer b. enzyme bilayer c. phospholipid bilayer d. protein layer 13. Which is not a way that Figure 7-2 is a model of cellular theory? Figure 7-2 a. b. c. d. bricks are small units in a building bricks are solid there are many bricks in a building bricks are organized to make a larger unit Figure 7-3 14. What is the approximate size of B in figure 7-3? a. 250 m b. 500 m c. 750 m d. 1000 m 15. What is the approximate size of A in Figure 7-3? a. 250 m b. 500 m c. 750 m d. 1000 m 16. What would be the best way to estimate the size of C in Figure 7-3? a. increase magnification c. estimate by what you can see b. decrease magnification d. assume it is 2000 m Figure 7-4 17. What would happen to the structure in Figure 7- 4 if part D is completely removed? a. it would become solid c. it would have holes in it b. it would disintegrate d. it would collapse in on itself 18. Where are you least likely to find water in the structure shown in Figure 7-4 a. A c. C b. B d. E 19. What structure is analogous to a door way? a. A b. B c. C d. D 20. Which of the following pictures in Figure 7-5 most likely approximates the motion phospholipids make in a plasma membrane? Figure 7-5 a. A b. B 21. c. C d. D A cell contains the structure shown in Figure 7-7 that manufactures glucose from sunlight. What other cell structure that is not found in all eukaryotic cells is likely to be found in this cell? Figure 7-7 a. mitochondria b. ribosomes c. cell wall d. plasma membrane 22. In plants, the structures that transform light energy into chemical energy are called ____________________. a. mitochondria c. cell walls b. chloroplasts d. endoplasmic reticulum 23. The small, membrane-bound structures inside a cell are ____________________. a. organs c. organelles b. molecules d. ions 24. Cell structures that contain digestive enzymes are ____________________. a. smooth endoplasmic reticulum c. rough endoplasmic reticulum b. lysosomes d. ribosomes 25. In a cell, the breakdown of glucose molecules in order to release energy occurs in the ____________________. a. chloroplasts c. mitochondria b. endoplasmic reticulum d. cytoplasm 26. In a cell, the sites of protein synthesis are the ____________________. a. ribososmes c. lysosomes b. vacuoles d. Golgi apparatus 27. An organism with a cell that lacks a true nucleus is a(n) ____________________. a. prokaryote c. unicellular organism b. eukaryote d. multicellular organism 28. The pigment that gives plants their green color is ____________________. a. chlorophyll c. keratin b. chlorofluorocarbons d. vitamin D 29. Short, hair-like projections used for locomotion are ____________________. a. flagella c. cilia b. pseudopod d. ribosomes 30. The folded system of membranes that forms a network of interconnected compartments where chemical reactions that make cellular products are carried out inside the cell is called the __________________. a. Golgi apparatus c. endoplasmic reticulum b. phospholipid bilayer d. fluid mosaic 31. The movement of materials into and out of the cells is controlled by the ____________________. a. nuclear membrane c. cytoplasm b. ribosomes d. plasma membrane 32. A structure found outside the plasma membrane in some cells is the ____________________. a. cytoplasm c. flagellum b. nucleus d. phospholipids bilayer 33. The network of tiny rods and filaments that forms a framework for the cell is called the a. cytoplasm c. cellular membrane b. nucleus d. cytoskeleton 34. The functions of a eukaryotic cell are managed by the ____________________. a. cytoplasm c. nucleolus b. mitochondria d. nucleus 35. In the nucleus, long strands of DNA form the ____________________. a. nuclear membrane c. cytoskeleton b. chromatin d. Golgi apparatus Match the structure with its name. Plant Cell a. b. c. d. e. f. g. h. i. j. cell wall chloroplast endoplasmic reticulum Golgi complex microtubule mitochondrion nucleus plasma membrane ribosome vacuole Animal Cell a. b. c. d. e. f. g. h. i. j. ribosome plasma membrane nucleolus nuclear envelope mitochondrion lysosome Golgi complex endoplasmic reticulum chromatin centriole