1. IAS Midterm Review 2016

2. 1. Read the experiment below to answer the questions below. John is testing whether or not fertilizer increases plant growth. His hypothesis was that fertilizer would make plants grow more. He uses 2 plants. Plant A was grown in soil and Plant B was grown in soil with fertilizer added to it. John gave each plant the same amount of water, and the same amount of sunlight. He measured the height of each plant once a week for 5 weeks. At the end of the experiment, the height of Plant A was 10 cm and the height of Plant B was 15 cm. a. IV Fertilizer b. DV height c. Control group Plants A d. What are 2 factors that must remain constant? Type of plant, same amount of soil, same amount of water, temperature e. Describe what can be done to make the results of this study more reliable. Repeat or increase sample size. A. SCIENTIFIC METHOD

3. 2. The volume of water in a graduated cylinder is 30mL. A marble is placed into the graduated cylinder. The volume of the water is now 34mL. a. What is the volume of the marble? 34-30 = 4 mL

4. 3. An object has a length of 2 cm, a height of 3.2 cm and a width of 0.23 cm. What is the volume of the object! Show all work! V = L x W x H V = 2 cm x 3.2 cm x 0.23 cm V = 1.472 (always round to nearest tenth) V = 1.5 cm 3

5. 4. What is the mass shown in the triple beam balance below? 328.3g

6. 5. What is the length of the object below in centimeters? 5.1cm

7. 6. What is the volume of the liquid in the graduated cylinder at the right? 16 mL

8. 7. a. The mass of an object is 50g and its volume is 5.5 mL. What is the density of the object? Show all work. D = m v D = 50 g 5.5 mL D = 9.1 g/mL b. Does the object float in water? Why or why not? It does not float. In sinks because it has a greater density than water (1.0g/mL)

9. 8. Identify the following temperatures in degrees Fahrenheit and degrees Celsius. a. melting point of water? 0C, 32F c. boiling point of water? 100C, 212F b. freezing point of water? 0C, 32F

10. 9. Which part of the microscope controls the amount of light used? diaphragm 10. When switching from low to high power, what happens to the field of view? It decreases 11. What is the total magnification produced by a microscope using a 10x ocular lens and a 10x objective lens? 10 x 10 100x 12. A specimen is on the right side of the field of view. Which way should you move the slide to center the image? left 13. The cover slip must be lowered onto the specimen at an angle on A WET MOUNT to avoid _______________. Air bubbles 14. A substance added to a wet mount, that makes cell parts more visible is called _____________. stain

11. 15.What is the diameter of the field of view below in millimeters and micrometers? 3.5 mm 3500 um 16. What is the length of one of the cells in the field of view in millimeters and micrometers if the diameter is 8mm? 2 mm 2000 um

12. D. CELLS AND CELL PROCESSES 17. LIFE PROCESSESDESCRIPTION __ 1. TransportA. Sum/total of all life processes in the body ___ 2. Locomotion B. Movement of materials through the body & within a cell ___ 3. NutritionC. Control & coordination of all life processes ___ 4. RespirationD. Movement from one place to another ___ 5. ExcretionE. Small molecules join to form large molecules ___ 6. Growth F. Taking in materials from the environment to be used by the body ___7. Reproduction G. Production of new individuals ___8. SynthesisH. Production of energy ___ 9. RegulationI. Removal of metabolic wastes ___ 10. MetabolismJ. Increase in cell # (cell division) B D F H I J G E C A

13. 18. Which part of the cell: a.transports materials cytoplasm, ER b. carries out respiration mitochondria c. stores materials vacuole d. produces proteins ribosome e. is semi-permeable Cell membrane f. Carries out photosynthesis chloroplast g. packages and ships materials Golgi bodies h. gives a plant cell it’s shape stores materials Cell wall i. aids in cell division in animal cells centrioles j. Controls the cell nucleus k. digests materials in animal cells lysosome

14. 19. List the 5 levels of organization of a multicellular organism from smallest to largest. Cells  tissues  organs  organ systems  organism

15. 20. Identify the form of transport being described (diffusion osmosis or active transport).. a. The particles in the diagram represent CO 2. They move from A  B. b. The particles in the diagram represent CO 2. They move from B  A. a. The particles in the diagram represent WATER. They move from A  B. Diffusion Active transport osmosis

16. 21. Identify the type of respiration being described: a. Requires oxygen Aerobic b. Fermentation Anaerobic c. Occurs in the muscles in the absence of oxygen Lactic Acid Fermentation d. Carried out by yeast Alcoholic Fermentation e. produces 36 ATP Aerobic f. occurs in mitochondria aerobic

17. D. CHEMISTRY 22. Label the subatomic particles of the atom below and indicate its charge. A. Electron ( negative) B. neutron ( no charge) C. Proton (positive)

18. 23. Identify each phase below (solid, liquid, gas). Gassolid Liquid

19. 24. For the following questions, choose the phase change that is described by each statement. Melting Evaporation Condensation Freezing Sublimation a. Gas changes to liquid. Condensation b. Liquid changes to gas evaporation c. Solid changes to liquid melting d. Solid changes directly to gas phase. sublimation e. Liquid changes to a solid. freezing

20. 25. For the following questions, determine if a physical (P) or chemical change (C) is being described. a. Iodine reacts with hydrogen to form a gas. C b. Shattering of a glass P d. Explosion of fireworks C e. Drying of wet laundry. P

21. 26. The following statements are false. Change the underlined word to make the statement correct. a.In a compound, elements are physically combined. mixture b. In a mixture, substances cannot be separated by physical means. compound c. A compound cannot be broken down into a simpler substance. Element

22. 27. For the questions below, select the family below being described (Metals - M, Nonmetals - N, Metalloids - ME, Noble Gases - NG) a.Very ductile and malleable. metals e. Brittle nonmetals b. Good conductor metals d. No luster. nonmetals f. Can be shiny or dull metalloids

23. 28. Use the Periodic Table below to answer the following questions. a. Which letter represents the metals? b. Which letter represents the noble gases? c. Which letter represents a period? d. Which letter represents a group? e. Which letter would contain some metalloids? C E A B & E D

24. 29. The graph below shows the heating curve for water. Answer the questions using the graph.. a. Label all phase changes on the diagram. b. What is the melting point of this substance? c. What is the boiling point of this substance? 0°C 100°C freezing melting cond evap

25. 30. Base your answers to the following questions on the information and data table below and on your knowledge of science. During a study done on yeast cells, a student used a microscope to determine the number of yeast cells present at various times. The results are summarized in the data table below. a. Mark an appropriate scale on each labeled axis. b. Plot the data on the grid. c. Surround each point with a small circle. d. Connect each point. e. What is the dependent variable? e. Approximately how many yeast cells were present after 2 hours? 12 3 45 6 5 10 15 20 25 30 35 40 45