Science Test Unit 2

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Science Test Unit 2
2012-09-12 23:06:22
Suzanna Arul Science test two

Just study guide to science.
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  1. Where does the energy for human metabolism come from? 
  2. Write the chemical equation that is used to summarize photosynthesis.
    • 6CO2+6H2O(yields w/ sunlight) C6H12O6+ 6O2
  3. Light absorbing substances are called?
  4. Pigments found in plants include chlorophyll a, chlorophyll b,  and __________
  5. Electrons that leave the chlorophyll molecules are replaced by electrons from split _____ molecules
  6. ATP and ______ are produced in the second stage of photosynthesis
  7. The series of molecules through which excited electrons are passed down a thylacoid membrane is called an ______
  8. ATP is made from ADP by adding a(n) ___________ group to a molecule of ADP
  9. What is the role of the Calvin cycle in photosynthesis? 
    It fixes the carbon in CO2 to make sugar
  10. What are three enviromental factors that affect photosynthesis? 
    sunlight, water, and carbon
  11. Cells harvest the energy in organic compounds to make ATP through a process called ____________
    Cellular respiration 
  12. Metabolic processes that require oxygen are called ________ process.
  13. The breakdown of glucose to pyruvate is called 
  14. The primary fuel for cellular respration is ___________
  15. In the first stage of cellular respiration, glucoseis broken down to ____________
    2 pyruvic acids
  16. How is acetyl-CoA produced?
    pyruvate is oxidized
  17. What are the product of the electron transport chain in the second stage of cellular respiration?
    32 ATP
  18. When oxygen is not present, the _______ does not function
    Aerobic CR
  19. Two types of fermation are:
    alcohol and lactic acid
  20. The role of fermentation in cellular respiration is to recycle ________.
    lactic acid back to glucose
  21. Why do cells produce more ATP under aerobic conditions than under anaerobic conditions? 
    More energy is created for the ETC to occur
  22. What does ETC stand for?
    Electric Transport Chain
  23. Define Autotrophs 
    Organisms that make their own food
  24. Where is the site of the photosynthesis?
  25. Where does the Kreb's Cycle occur?
    The mitochondrion
  26. What is the Glucose formula?
    • C6H12O6
  27. Which process requires energy aerobic or anerobic?
  28. ATP does what?
    stores/provides energy
  29. What does ADP stand for?
    Adenosine diphosphate
  30. What is glycolysis?
    The anaerobic process of splitting glucose and forming two molecules of pyruvic acid
  31. How many ATP are produced within each of the following:
    Kreb's Cycle
    2,2, & 32
  32. Define what the Golgi Apparatus is. 
    • It sorts,packages & transports cells
    • *Like a post office!
  33. Define what a vacuole is.
    • Stores food, water, wastes, and other materials
    • Plants usually have one large vacuole while animals have many small ones.
    • *Vacume! It stores!
  34. What are chloroplasts filled with?
  35. What does a mitochondria do?
    Creates energy in the form of ATP
  36. What does a smooth ER do?
    transports fats
  37. What does a rough ER do?
    Transports protiens
  38. What do Lysosomes do?
    • Cleans up the cell 
    • *think of lysol, it cleans
  39. What does a nucleus do?
    Controls all cell functions, where the DNA is located
  40. Define the main function of Ribosomes
    • To make protiens. Either attached to Rough ER of free floating. Looks like little dots.
    • *Mmm ribs, makes protien!
  41. Describe the Cell Wall
    It is outside of the cell membrane and protects the cell. Only found in plants.
  42. Describe the cell membrane.
    It protects the cell, keeps everything inside the cell, and allows materials in and out.
  43. Where does light reaction occur?
    thylokoid membrane
  44. What happens in light raction?
    Light energy is converted into chemical energy
  45. What do photosystems do?
    They absorb photons in the thylakoid membrane
  46. Where does the Calvin cycle occur? 
  47. What is carbon fixation?
    Carbon being fixed into a useful form
  48. What are stomata?
    Pores on the underside of leaves to let carbon dioxide in and oxygen and water vapor out.
  49. What does photosynthesis create?
    Glucose and oxygen
  50. Where does photosynthesis take place?
  51. What occurs in the matrix of the mitochondria?
    Kreb's Cycle
  52. What does the Krebs Cycle do?
    Breaks down pyruvate and makes 2 ATP