L13 Chloroplasts and photosynthesis

Descrição

• Describe how cells capture light energy. • Describe how light energy is transduced into cellular energy. • Outline the inputs and outputs of photosynthesis.
Mer Scott
Quiz por Mer Scott, atualizado more than 1 year ago
Mer Scott
Criado por Mer Scott quase 7 anos atrás
2
1

Resumo de Recurso

Questão 1

Questão
Chromoplasts have decreased thylakoid membranes.
Responda
  • True
  • False

Questão 2

Questão
What could a possible explanation be for chloroplasts converting to chromoplasts?
Responda
  • Ripening of a fruit
  • Withering of the plant
  • Winter beginning

Questão 3

Questão
Which plastid would be responsible for storing starch in a potato?
Responda
  • Proplastid
  • Chloroplast
  • Chromoplast
  • Leucoplast

Questão 4

Questão
The light reactions in the thylakoid space:
Responda
  • Use ATP and electrons from NADP+
  • Release ATP and electrons on NADPH

Questão 5

Questão
Which wavelengths of light are absorbed for photosynthesis?
Responda
  • Cholorophyll-a
  • Cholorophyll-b
  • Carotenoids
  • All of the above.

Questão 6

Questão
400nm and 700 nm wavelengths are the most readily absorbed while green light is not absorbed at all.
Responda
  • True
  • False

Questão 7

Questão
(Choose all correct). Engelman's experiment:
Responda
  • Used algae.
  • Used bean plants.
  • Involved a diffraction of light using a prism.
  • Showed photosynthetic activity was dependant on wavelength.
  • Showed photosynthetic activity was dependant on the speed of light.

Questão 8

Questão
Where would you find the light harvesting pigment cholorphyll?
Responda
  • In the stroma of chloroplasts.
  • In the thylakoid space.
  • In the thylakoid membrane.

Questão 9

Questão
Choose the correct statement.
Responda
  • Photosystems are part of light-harvesting complexes.
  • A reaction centre complex is composed of a photosystem and a light-harvesting complex.
  • The light-harvesting complex is a protein which sits in the thylakoid membrane.
  • The reaction centre complex surrounds the light-harvesting complex.

Questão 10

Questão
Order these steps of energy transfer from photons to chloroplasts: [blank_start]3.[blank_end] An electron from the special chlorophyll in the reaction centre complex is excited. [blank_start]2.[blank_end] Energy is passed along the chain of chlorophyll molecules. [blank_start]1.[blank_end] Photon reaches light harvesting complexes/chlorophyll molecules. [blank_start]4.[blank_end] The electron is transferred to the primary electron acceptor in the reaction centre complex.
Responda
  • 3.
  • 2.
  • 1.
  • 4.

Questão 11

Questão
Choose the incorrect statement about the photosynthetic electron transport chain.
Responda
  • Photosystem II precedes Photosystem I.
  • Photosystem II provides two electrons to move H+ down it's gradient through the Cytochrome complex.
  • Photosystem I provides electrons for NADP+ to become NADPH via NADP+ reductase.
  • Photosystem II splits water and releases oxygen.
  • ATP synthase uses energy from H+ moving down its gradient to synthesize ATP.

Questão 12

Questão
Cyanobacteria are the anaerobic bacteria which form algael blooms.
Responda
  • True
  • False

Questão 13

Questão
Fill in the steps of the Calvin Cycle. 1. [blank_start]Carbon fixation[blank_end]: Three CO2 react with three 5-carbon compounds to make three 6-carbon compounds. This involves a protein known as [blank_start]rubisco[blank_end]. 2. [blank_start]Reduction[blank_end]: [blank_start]6[blank_end] ATP and 6 NADPH are used to reduce three CO2 to three 3-carbon compounds. 3. [blank_start]Regeneration of CO2 acceptor[blank_end]: [blank_start]3[blank_end] ATP are used to change five 3-carbon compounds to the original three 5-carbon compounds.
Responda
  • Carbon fixation
  • rubisco
  • Reduction
  • Regeneration of CO2 acceptor
  • 3
  • 6

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