Bio 110 Final: Chapter 8

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Biology Test sobre Bio 110 Final: Chapter 8, creado por Christina Marshall el 13/12/2017.
Christina Marshall
Test por Christina Marshall, actualizado hace más de 1 año
Christina Marshall
Creado por Christina Marshall hace casi 7 años
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Resumen del Recurso

Pregunta 1

Pregunta
The water necessary for photosynthesis
Respuesta
  • is split into H2 and O2
  • is directly involved in the synthesis of carbohydrates
  • provides the electrons to replace the lost electrons in photosystem II
  • Provides the H+ needed to synthesize G3P
  • does none of the above

Pregunta 2

Pregunta
In PSII, p680 differs from the other pigment molecules in the light-harvesting complex in that it
Respuesta
  • is a carotenoid
  • absorbs light energy and transfers that energy to other molecules with out the transfer of electrons
  • transfers an excited electron to the primary electron acceptor
  • does not transfer an excited electron to the primary electron acceptor
  • acts as an ATP synthase to produce ATP

Pregunta 3

Pregunta
The cyclic electron flow that occurs via photosystem I produces
Respuesta
  • NADPH
  • oxygen
  • ATP
  • all of the above
  • a and c only

Pregunta 4

Pregunta
During linear electron flow, the high-energy electron from p680
Respuesta
  • eventually moves to NADP+
  • becomes incorporated in water molecules
  • is pumped into the thylakoid space to drive ATP production
  • provides the energy necessary to split water molecules
  • falls back to the low-energy state in photosystem II

Pregunta 5

Pregunta
During the first phase of the Calvin Cycle, carbon dioxide is incorporated into ribulose biphosphate (RuBP) by
Respuesta
  • oxaloacetate
  • rubisco
  • RuBP
  • quinone
  • G3P

Pregunta 6

Pregunta
The NADPH produced during the light reactions is necessary for
Respuesta
  • the carbon fixation phase, which incorporates carbon dioxide into an organic molecule of the Calvin Cycle
  • the reduction phase, which produces carbohydrates in the calvin cycle
  • the regeneration of RuBP of the Calvin Cycle
  • all of the above
  • a and b only

Pregunta 7

Pregunta
The majority of the G3P produced during the reduction and carbohydrate production phase is used to produce
Respuesta
  • glucose
  • ATP
  • RuBP to continue the cycle
  • Rubisco
  • all of the above

Pregunta 8

Pregunta
Photorespiration
Respuesta
  • is the process where plant use sunlight to make ATP
  • is an inefficient way plants can produce organic molecules and in the process use O2 and release CO2
  • is a process that plants use to convert light energy to NADPH
  • occurs in the thylakoid lumen
  • is the normal process of carbohydrate production in cool, moist environments.

Pregunta 9

Pregunta
Photorespiration is avoided in C4 plants because
Respuesta
  • these plants separate the formation of a four-carbon molecule from the rest of the Calvin cycle in different cells.
  • these plants carry out only anaerobic respiration.
  • the enzyme PEP caroboxylase functions to maintain high CO2 concentrations in the bundle-sheath cells
  • all of the above
  • a and c only

Pregunta 10

Pregunta
Plants commonly found in hot and dry environments that carry out carbon fixation at night are
Respuesta
  • oak trees
  • C3 plants
  • CAM plants
  • all of the above
  • a and b only
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