Biology 1406: Exam 3

60 Questions | Total Attempts: 25

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Biology 1406: Exam 3

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Questions and Answers
  • 1. 
    What are the inputs of the dark reactions?
    • A. 

      ATP

    • B. 

      NADH

    • C. 

      Glucose

    • D. 

      CO2

    • E. 

      NAD

    • F. 

      H2O

  • 2. 
    In C4 plants, CO2 fixation by PEP carboxylase occurs in ________ CO2 fixation by RuBisCO occurs in ________.
    • A. 

      Bundle sheath cells; bundle sheath cells

    • B. 

      Bundle sheath cells; mesophyll cells

    • C. 

      Mesophyll cells; bundle sheath cells

    • D. 

      Mesophyll cells; mesophyll cells

  • 3. 
    In non-cyclic photophosphorylation, what gas is released when water is hydrolyzed? It is a one-word answer and spelling matters.
  • 4. 
    Chlorophyll is the main pigment found in plants. Other pigments are also present. If these other pigments were lost from a plant, but chlorophyll remained, the plant would no longer be able to absorb wavelengths of light outside those absorbed by chlorophyll.
    • A. 

      True

    • B. 

      False

  • 5. 
    In photosynthesis, the light dependent reactions take place in the ________and the light-independent reactions take place in the ________.
  • 6. 
    Below is the electromagnetic spectrum showing the wavelength. Which has greater energy, the red color or violet color.
    • A. 

      Violet

    • B. 

      Red

  • 7. 
    Which statements describe light reaction of photosynthesis?
    • A. 

      It converts light energy to chemical energy

    • B. 

      CO2 is produced

    • C. 

      Water is one of the outputs

    • D. 

      It takes place in the thylakoid

  • 8. 
    Which events below are present in both non--cyclic and cyclic photophosphorylation?
    • A. 

      Production of ATP

    • B. 

      Transport of electron to primary electron acceptor

    • C. 

      Production of O2

    • D. 

      Hydrolysis of water

  • 9. 
    What happens in stage 2 of Calvin cycle?
    • A. 

      Phosphoglyceric acid is formed

    • B. 

      ATP and NADH are used to form glyceraldehyde 3-phosphate from phosphoglyceric acid

    • C. 

      RuBP is regenerated

    • D. 

      Glucose is synthesized

    • E. 

      CO2 combines with RuBP

  • 10. 
    During what stage in photosynthesis, NADP is converted to NADPH and ADP + Pi converted to ATP?
    • A. 

      Light independent reactions

    • B. 

      Light-dependent reactions

    • C. 

      Neither light-dependent reactions or light independent reactions

    • D. 

      Both light-dependent reactions and light independent reactions 

  • 11. 
    In non-cyclic photophosphorylation, the lost electron in PS II is replaced by electrons coming from _________.
  • 12. 
    In non-cyclic photophosphorylation, what replaces the lost electron in PS I?
    • A. 

      Electrons from ATP

    • B. 

      Electrons from chlorophyll in PS II

    • C. 

      Electrons from water

    • D. 

      Electrons from itself (PS I)

  • 13. 
    ________ is the green pigment in plants and other photosynthetic organisms. It is a one-word answer (singular) and spelling matters.
  • 14. 
    In the light reaction of photosynthesis, 8 photons yield 3ATP and 2 NADPH. In the Calvin cycle, 18 ATP and 12 NADPH are required to make one molecule of glucose. How many photons then were absorbed to make one molecule of glucose? Your answer must be numeral only such as 10
  • 15. 
    What are the outputs of the light reactions?
    • A. 

      O2

    • B. 

      CO2

    • C. 

      ATP

    • D. 

      H2O

    • E. 

      Glucose

    • F. 

      NADH

  • 16. 
    The light-independent reactions of photosynthesis are those that ________.
    • A. 

      Occur only at night

    • B. 

      Convert glucose into ATP

    • C. 

      Convert water into hydrogen and oxygen

    • D. 

      Convert CO2 into sugar

  • 17. 
    Which of the following statement is correct?
    • A. 

      The thylakoid is located in the chlorophyll in the chloroplast in the mesophyll cell in the leaf

    • B. 

      The chlorophyll is located in the thylakoid in the chloroplast in the mesophyll cell in the leaf

    • C. 

      The thylakoid is located in the chloroplast in the chlorophyll in the mesophyll cell in the leaf

    • D. 

      The chlorophyll is located in the thylakoid in the mesophyll cell in the chloroplast in the leaf

  • 18. 
    In the reaction below, which is the reducing agent? 6CO2  +   6H2O      à    C6H12O6   +   6O2
    • A. 

      6H2O

    • B. 

      6CO2

    • C. 

      C6H12O6

    • D. 

      6O2

  • 19. 
    In CAM plants, CO2 fixation by PEP carboxylase occurs at (daytime or night time) in  (mesophyll cells or bundle sheath cells).
    • A. 

      Daytime; mesophyll cells

    • B. 

      Daytime; bundle sheath cells

    • C. 

      Night time; mesophyll cells

    • D. 

      Night time; bundle sheath cells

  • 20. 
    Below is an illustration of a chloroplast. Identify the part that is labeled B. It is a one-word answer (singular) and spelling matters.
  • 21. 
    Animal cells typically achieve cytokinesis by ________.
    • A. 

      Forming a cleavage furrow that pinches the cell into two

    • B. 

      Forming a cell plate across the middle of the cell

    • C. 

      Chromosome elongation

    • D. 

      Binary fission

  • 22. 
    If a cell has 46 double copy chromosomes, how many sister chromatids are there? Your answer must be numeral only such as 10.
  • 23. 
    A cell with 2n = 10, divides by mitosis. How many chromosomes are there in the nucleus in each of the two daughter cells? Your answer must be numeral only such as 10.
  • 24. 
    If there are 32 sister chromatids in a normal somatic cell, what is the haploid number for that cell? Your answer must be numeral only such as 10.
  • 25. 
    If there are 20 centromeres in a cell at anaphase, how many chromosomes are there in each daughter cell following cytokinesis? Your answer must be numeral only such as 10.
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