Life Science

Test 3

1. The covering that forms the outer boundary of a cell is called the cell membrane.

Quiz 3A

2. The cell membrane protects the cell from harmful substances but allows the needed materials into the cell.

Quiz 3A

3. cytology—the study of cells

Quiz 3A

4. In the fluid mosaic model, the cell membrane is made of the molecules protein and lipids.

Quiz 3A

5. Hydrophilic—something that likes to be in water.

Quiz 3A

6. Hydrophobic—avoids contact with water

Quiz 3A

7. Living cells require water environments.

Quiz 3A

8. A selectively permeable membrane allows some molecules to pass through but not others.

Quiz 3A

9. Water, oxygen and carbon dioxide are small and pass through membranes.

Quiz 3A

10. Starch and protein molecules are large and only pass through certain membranes.

Quiz 3A

11. transport—movement through a cell

Quiz 3A

12. Passive transport—movement of substances through a membrane without the use of the cells own energy.

Quiz 3A

13. Diffusion is an example of passive transport (not a type of osmosis).

Quiz 3A

14. In osmosis, water moves from an area of higher concentration to an area of lower concentration.

Quiz 3A

15. Diffusion and osmosis are examples of passive transport.

Quiz 3A

16. Active transport requires the cell to use energy.

Quiz 3A

17. Anton van Leeuwenhoek was recognized as an honorary member by the Royal Society of London because of his outstanding work in making an using lenses to see tiny organisms.

Quiz 3A

Quiz 3A

covers notes:1, 3, 4, 5, 8,

12, 13, 14, 16, 17

18. All cells need energy.

Quiz 3B

19. Cells have three basic parts:a. Cell Boundariesb. Cytoplasmc. Genetic Material

Quiz 3B

20. All cells have an outermost boundary called the cell membrane.

Quiz 3B

21. The cell membrane protects the cells inside and controls what enters and exits the cell.

Quiz 3B

22. Plant cells are different from animals cells because their boundaries include a structure called a cell wall.

Quiz 3B

23. The diaphragm on a microscope is used to adjust the amount of light passing through the specimen.

Quiz 3B

24. 10 X eyepiece

x 40 X objective

400 X total magnification

Quiz 3B

25. cytoplasm—thick fluid that contains small organelles

Quiz 3B

26. organelles—parts of a cell that perform many functions needed to keep the cell alive

Quiz 3B

27. mitochondria—produces usable energy for the cell

Quiz 3B

28. Ribosomes manufacture proteins

Quiz 3B

29. Vacuoles store material.

Quiz 3B

30. Lysosomes dispose of worn-out cell parts.

Quiz 3B

31. Chloroplasts—organelles in which photosynthesis occurs

Quiz 3B

32. Turgor pressure results from the build up of water in the central vacuole.

Quiz 3B

33. The nucleus contains the cells genetic information.

Quiz 3B

Quiz 3B covers notes:22-24, 27-33

34. Algae plants and humans have eukaryotic cells—not bacteria.

Quiz 3C

35. All animals cells are eukaryotic.

Quiz 3C

36. The eukaryotics genetic material is surrounded by a membrane.

Quiz 3C

37. The genetic material of staphylococcus aureus is a prokaryotic (bacteria) because it is contained in a nuclear area that is not surrounded by a nuclear membrane.

Quiz 3C

38. Prokaryotic cells have genetic material.

Quiz 3C

39. Some organelles may be missing in some cells.

Quiz 3C

40. Prokaryotic cells do not have mitochondria.

Quiz 3C

41. Eukaryotes and prokaryotic cells have cell walls.

Quiz 3C

42. Chloroplast are found in some eukaryotic cells but not all of them.

Quiz 3C

43. An example of irreducible complexity is when a cell cannot survive without ribosomes for making proteins.

Quiz 3C

Quiz 3C

covers notes:34-43

Test 3 covers notes: 1, 2, 3, 6, 7, 9, 10, 11, 15, 17, 18, 19, 20, 21, 25, 26, 27, 28, 29, 30, 33, 35

+ given two cells models, identify:

Animal—cilia, nucleus, mitochondria, cell membrane, cytoplasmPlant—cell wall, cell membrane, chloroplast, vacuole, ribosomes