BIOLOGY EXAMS/ LATEST INTRODUCTORY QUIZ COMPLETE WITH ANSWERS.

BIOLOGY EXAMS/ LATEST INTRODUCTORY QUIZ COMPLETE WITH ANSWERS.Photosynthesis chapter 5 1. How does the plant use the glucose it produces in the carbon reactions? Select all that apply. The plant combines glucose molecules into glycogen. The plant stores glucose molecules as polysaccharides. The plant breaks down the glucose for energy. The plant shuttles the glucose to the thylakoids, providing energy to fuel the light reactions. The plant uses the glucose to produce structural polysaccharides. 2. The carbon atoms in the cellulose of a wood log originally came from _____ absorbed by the plant. Carbon Dioxide 3. Organisms that make their own organic compounds from inorganic substances are called – autotrophs 4. The main byproduct of photosynthesis that is essential to most life forms is oxygen. 5. 6. 7. 8. The energy source for the light reactions is _____; the energy source for the carbon reactions is ______. Sunlight, ATP 9. 10. 11. Which organism's life depends on photosynthesis? sea slug Elysia chlorotica oak trees corals All answers are correct. humans 12. What organisms conduct photosynthesis? Select all that apply. many types of bacteria 0 algae fungi terrestrial animals plants 13. 14. Select the two main groups of chemical reactions in photosynthesis. photorespiration Krebs cycle glycolysis fermentation light reactions carbon reactions 15. During what stage(s) of photosynthesis is glucose produced? Carbon reactions 16. Leaves appear green because they absorb green wavelengths of light. True False 17. What are the products of the light reactions? (Select all that apply.) ATP Glucose 1 2 3 4 -2-2 -2-2 -2-2 -2-2 -2-2 -2-2 -2-2 1 Chlorophyll Photons of light NADPH 18.The energy source for photosynthesis is glucose. oxygen. carbon dioxide. sunlight. chlorophyll. 19. How would Earth be different without photosynthesis? All answers are correct. Autotrophs would rely on other chemical mechanisms to make carbohydrates. The amount of oxygen in the atmosphere would be lower. More sunlight would be absorbed and converted to environmental heat. Heterotrophs would have few food sources. Without photosynthesis, many of the non-living parts of Earth would change, and most living things would not exist for lack of oxygen. Please see section 5.1 for more information. 20. The primary pigment molecule needed for photosynthesis is oxygen. glucose. sunlight. chlorophyll a. carbon dioxide. -2-2 -2-2 -2-2 Cells chapter 3 1. Click on the structures that all cells have. (Select all that apply.) 2.Ribosomes use proteins to produce DNA. True False Ribosomes use the information encoded in the genetic material to produce proteins. 3.All organisms are made of one or more cells, which are the fundamental units of life. True False The cell theory states that the cell is the fundamental unit of all life; all organisms are made of one or more cells. 4. Many features of eukaryotes and prokaryotes differ. Drag and drop each phrase onto the image of the appropriate cell type. If a phrase applies to both cell types, drop it in the box that says “Applies to both”. -2-2 -2-2 5. Match the description on the left with the most fitting class of membrane proteins on the right. Right-click on any image to zoom in. 6. Complete the table by dragging each structure name or description into the appropriate place. 7. Consider your knowledge about the cell membrane and check all of the true statements below. Cell membranes are present in only two of the three domains of life. Phospholipids can self-assemble into a sphere without the help of proteins. If the fatty acid tails of phospholipids were hydrophilic, and the phosphate heads were hydrophobic, you’d expect the bilayer to look like this: