Biology Midterm Test Review

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1 Biology Midterm Test Review Levels of Organization 1. Put these levels of organization in order from simplest to most complex (smallest to largest): cell, community, atom, organism, biosphere, organ system, population, ecosystem, molecule, tissue Characteristics of Life 2. Living things are made up of units called. 3. Living things grow and. 4. Living things maintain an internal balance called. 5. A group of birds fly south in the winter. This is an example of which characteristics of life? 6. Why is the ability to move not a characteristic of life? 7. What characteristic of life would be more important to the survival of a group than an individual? 8. How many of the characteristics of life must be met to be considered a living organism? Biomolecules (Bio.9A) 1. What is the main function of these biomolecules? a. Carbohydrates- b. Proteins - c. Nucleic Acids - d. Lipids -

2 2. Which elements make up these biomolecules? a. Carbohydrates - b. Proteins - c. Nucleic Acids - d. Lipids - 3. Label each of the following pictures (8 total) with the biomolecule that it represents.

3 4. Examine the food label. Which biomolecule provides quick energy? How many grams of quick energy are available? Which biomolecule provides stored energy? How many grams of stored energy are available? Which biomolecule helps build bone and muscle? How many grams are available to do so? Cell Theory & History 1. Cells are the basic unit of. 2. What are the 3 parts of the cell theory? a. b. c. 3. The cell theory applies to living things. Prokaryotes vs. Eukaryotes (Bio.4a) 4. What are the two types of cells?

4 5. What is the main difference between the two types of cells? 6. What are two functions of the nucleus? a. b. 7. Label the cells below with the following parts (they may not have all parts listed): DNA, cell membrane, cell wall, organelle, nucleus, membrane-bound organelle. 8. Is a bacterial cell a prokaryote or a eukaryote? How do you know? 9. What are three cell parts (organelles) things that all cells have? a. b. c. Cell Processes & Organelles 10. are small structures within cells that have a specialized function. 11. What is homeostasis?

5 12. Which 4 organelles are involved in homeostasis? a. b. c. d. 13. What is the function of a vacuole? 14. What is dehydration synthesis? 15. What do ribosomes do? 16. Which 2 organelles are involved in energy conversions? 17. Which organelle turns food into energy for cells? Enzymes (Bio.9c) 1. The energy needed to get a reaction started is called. 2. What is an enzyme? 3. Label the picture with these words: substrate, enzyme, active site, product.

6 4. How does an enzyme affect the chemical reaction in the graph below? 5. Explain how temperature and ph can affect and enzyme. Photosynthesis and Cellular Respiration (Bio.9b) 1. What is the equation for photosynthesis? 2. What is the equation for cellular respiration? 3. What does aerobic mean? Anaerobic? 4. What is the purpose of photosynthesis? What are the reactants? What are the products? 5. What is the name of the pigment that absorbs sunlight in plants? Where is this pigment located in photosynthetic eukaryotes?

7 6. What is the purpose of cellular respiration? What are the reactants? What are the products? 7. How does matter flow through ecosystems? How does energy flow through ecosystems? What is the specific path that energy takes from the sun to you? 8. What is ATP? Why do living things need/use ATP instead of glucose or other energy molecules? 9. Label the parts of the ATP molecules below: 10. What is the difference between ATP and ADP? Draw an ADP molecule next to the ATP molecule above and label the parts. 11. In what organelle does photosynthesis take place? What molecules enter this organelle? What molecules leave? 12. In what organelle does cellular respiration take place? What molecules enter this organelle? What molecules leave? 13. Why do plants need carbon dioxide, sunlight, and water? What would happen to a plant that did not have one or more of these things? 14. What types of organisms photosynthesize? What organelle do all photosynthetic eukaryotes have? 15. What types of organisms undergo cellular respiration?

8 16. How are photosynthesis and cellular respiration related? Draw a diagram of the cycle between these two processes, including the components in terms of matter and energy. 17. How would you know if an organism was respiring and not photosynthesizing? How would you know an organism was photosynthesizing more than respiring? 18. What gas is removed by photosynthesis? What gas is produced by photosynthesis? 19. What gas is removed by cellular respiration? What gas is produced by cellular respiration? Cell Energy Flow Chart Photosynthesis and Cellular Respiration Word Bank: Mitochondria, Chloroplast, Photosynthesis, Cellular Respiration, Solar Energy (SUN), ATP, 6CO 2, 6CO 2, 6H 2 0, 6H 2 0, C 6 H 12 O 6, 6O 2

9 The Cell Membrane 1. What structures shown in the diagram above make up the cell membrane? a. b. c. d. 2. List the functions of the cell membrane: a. b. 3. What does it mean to be selectively permeable? 4. What is a concentration gradient? Types of Transport (Bio.4b) 6. What is the difference between active and passive transport?

10 7. What are three types of passive transport? a. b. c. 8. What are three types of active transport? a. b. c. 9. Define each of the following types of transport. a. Diffusion - b. Osmosis - c. Facilitated Diffusion - d. Active Transport - e. Endocytosis - f. Phagocytosis - g. Pinocytosis - h. Exocytosis -

11 10.Complete the table below: Definition Picture of how water moves Isotonic - Hypertonic - Hypotonic - Effects of Solutions on Cells 14. Indicate the type of solution in each picture below (hypotonic, hypertonic, isotonic) 15. Which type of solution is ideal for animal cells? 16. What will happen to an animal cell that is placed in distilled water? 17. What will happen to an animal cell that is placed in salt water?

12 Plant A Plant B Plant C 18. In the diagram above, which plant is in a hypertonic solution? 19. In the diagram above, which plant is in a hypotonic solution? 20. What is turgor pressure? 21. Using the diagram above, put the plants in order from lowest turgor pressure to the highest turgor pressure? 22. Label each of the following pictures with the type of transport that it depicts.

13 DNA Structure (Bio.6a) 1. What does DNA stand for? 2. What is DNA? What does DNA help determine? 3. What are the 5 elements that DNA contains: 4. The monomer of DNA is 5. The polymer of DNA is a 6. List and label the 3 parts of a nucleotide:

14 7. List the 4 types of Nitrogen Bases 8. These 4 bases pair in a specific way: pairs with pairs with 9. Write the sequence of bases that would pair with T T G C A C A T G A A 10. All organisms have the same DNA structure. The only difference is the of the nitrogen bases. 11. The shape of DNA is a. 12. What type of bonds hold the two strands of DNA together? DNA Replication (Bio.5a) List and describe the 4 steps of DNA replication.

15 13. At the end of DNA Replication there are DNA molecules. They are identical to each other. Each DNA molecule contains one strand and one strand. Cell Cycle and Cell Division (Bio.5a) 14. What are the three reasons that cells must divide. a. b. c. 15. Label the parts of the cell cycle and describe what happens in each part. 1: G1: S: G2: 2: M: C: 16. DNA changes into different forms during the cell cycle and mitosis. Describe the form of DNA listed below. Chromatin: Chromosome: Sister Chromatids:

16 17. What is mitosis? 18. What are the names of the 4 steps of mitosis? Step 1: Step 2: Step 3: Step 4: 19. What is the job or function of Centrioles/Spindle Fibers? 20. Complete the following chart for the steps of mitosis:

17 21. Complete the following chart for cell division: 22. What does mitosis and cytokinesis produce? Cell Cycle Regulation and Cancer (Notes - Cell Cycle Regulation & Cancer) 23. Complete the following table. Make sure to fill in each box.

18 24. What is cancer? What will a cell do if it is cancerous? 25. What is a tumor? 26. Complete the following table. 27. What is a carcinogen? 28. What is a mutation? How does a mutation contribute to producing cancer cells?

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