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Biology210A - Exam 2 - Quiz 5
Quiz 5 on Photosynthesis
33
Biology
Undergraduate 2
10/01/2013

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Term
AMP
Definition

Adenosine Monophosphate

 

Stimulates phosphofructokinase by changing the shape of the active site to its correct shape and process can continue; acts as an activator

Term
An abundance of citrate can act as a(n) ____________.
Definition
inhibitor
Term
What happens during photosythesis (generally)?
Definition
Solar energy (energy from the sun) is converted into chemical energy in a cell (i.e. sugars).
Term
Autotroph
Definition
  • Organism capable of creating its own food source
  • Also known as a producer
  • Convert inorganic energy into usable chemical energy
  • i.e. Photoautotroph
Term
Photoautotroph
Definition
An autotroph that carries out photosynthesis, gets energy from the sun (i.e. algae being used for biofuels)
Term
Summary Reaction of Photosynthesis
Definition

It's essentially the opposite of celluar respiration:

 

6CO2 + 6H2O → C6H12O6 + 6O2

Term
Photosynthesis is divided into two types of reactions:
Definition
  1. Light Reactions
  2. Calvin Cycle (NOT dark reactions)
Term
Light Reactions take place on the ________________.
Definition
thylakoid membrane (primarily)
Term
In light reactions, ATP is synthesized through ____________________.
Definition
Photophosphorylation
Term

In the photosynthesis summary reaction, ___________ is reduced and ___________ is oxidized.

Definition
CO(Carbon Dioxide), H2O (Water)
Term
During light reactions, _______ is produced and __________ carries electrons.
Definition
O2, NADPH
Term
The Calvin Cycle takes place in the ______________.
Definition
Stroma
Term

In the Calvin Cycle, ATP and NADPH are used to _____________________.

Definition
reduce COto sugar
Term
Photons
Definition
Particles of Light
Term

The shorter the wavelength, the _______________ the energy.

 

The longer the wavelength, the ________________ the energy. 

 

Definition

higher, lower; it's an inverse relationship

 

[image]

Term

Any light absorbed is ___________; any light not absorbed is _____________ or ______________.

 

 

Definition

used; reflected, transmitted

 

 

Term
Absorption Spectrum
Definition

Graph plotting light's absorption (by different pigments in chloroplasts) vs. wavelength of light

 

[image]

Term
Action Spectrum
Definition

Graph plotting rate of Photosynthesis vs. Wavelength of Light

 

[image]

Term
Amount of ______ _________________ is used to measure the rate of photosynthesis.
Definition
O2 released
Term
Theodor Englemann
Definition
  • Laid filamentous algae (photosynthetic) acros microscope slide
  • Shone light refracted through prism onto slide
  • Added aerobic (O2-requiring) bacteria
Term
Where did the bacteria congregate in Englemann's experiment?
Definition

Where O2 was produced (since they were O2-requiring bacterium), virtually everywhere except where green light was. This is because green light is reflected (since ya know, plants are green and stuff). All of the OTHER colors were used.

 

This is a physical example of an action spectrum. 

 

[image]

Term
Pigments in Light Absorption
Definition
  • Chlorophyll a
  • Chlorophyll b
  • Carotenoids
Term
Of the three pigments involved in light absorption, which are accessory pigments?
Definition
Chlorophyll b and carotenoids
Term
Chlorophyll is part of a ____________________ embedded in the ____________________ of the cell.
Definition
photosystem (PS), thylakoid membrane
Term
Photosystem ___ comes first; Photosystem ___ comes second.
Definition
II, I
Term
ATP from chloroplasts are synthesized in the ________.
Definition
Stroma
Term
The light reactions are divided into:
Definition
Noncyclic (Linear) and Cyclic reactions.
Term
_____________________ is the final electron acceptor of the Calvin Cycle.
Definition
NADP+
Term
In order to go into the Calvin Cycle, ____________ and ____________ are needed.
Definition
ATP, NADPH
Term
In PSII, light is absorbed at a wavelength of
Definition
680 nm
Term
In PSI, light is absorbed at a wavelength of _______.
Definition
700 nm
Term
Cyclic Reactions involve:
Definition
PSI only, ATP only
Term
Noncyclic reactions involve:
Definition
  • ATP AND NADPH
  • PSI AND PSII
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