BS161 Chapter 8 Test | Questions with
100% Solutions/Verified Answers| Already
Passed
photosynthesis by capturing energy from ______,
however, they absorb wavelengths that are not efficiently absorbed by ________. In addition,
they scavenge _____ _______. - ANSWER light, chlorophylls, free radicals
In the reaction center, _____ are transferred out of the photosystem. - ANSWER electrons
In a green plant, the majority of photosynthesis takes place in: - ANSWER the leaves
A graph depicting the efficiency of photon absorption by a pigment molecule as a function of
photon wavelength is known as the........... - ANSWER absorption spectrum of the pigment
After the energy from light, chlorophyll in the reaction center becomes a ................... - ANSWER
strong electron donor
Several dozen of these kinds of molecules help comprise a light harvesting complex: - ANSWER
pigments
In photosynthesis, _______ molecules preferentially absorb violet-blue and red light. - ANSWER
chlorophyll
The reaction center is a ______ ______-pigment complex. - ANSWER Transmembrane protein
, Chlorophyll a is used as photosynthetic pigment by what organisms? - ANSWER - Plants
- Algae
- Protists
- Cyanobacteria
During photosynthesis, a chlorophyll in the reaction center loses its excited electron. How is
that electron restored? - ANSWER From a nearby weak electron donor. (when a chlorophyll
in the reaction center loses its excited electron, A nearby weak electron donor passes a low-
energy electron to chlorophyll to restore it to its original condition
In a chloroplast, _____ sacs stack on top of each other to form a granum. - ANSWER flattened
van Niel introduced the term ______ ______ to denote the process of converting CO2 into
organic matter using the electrons and protons resulting from the splitting of water. - ANSWER
carbon fixation
A chlorophyll molecule is made of a ______ ring and a _____ tail. - ANSWER porphyrin ring and
a hydrocarbon tail
Once a photon is captured by the light harvesting complex, the pigments in it transfer -
ANSWER the energy of excited electrons but not electrons themselves
The role of the light-harvesting complex is to - ANSWER directly absorb photons of light
Pigments are molecules that - ANSWER absorb light in the visible range
Similar to ATP synthesis in mitochondria, ATP synthesis in chloroplasts is achieved by an
_______ mechanism - ANSWER chemiosmotic
100% Solutions/Verified Answers| Already
Passed
photosynthesis by capturing energy from ______,
however, they absorb wavelengths that are not efficiently absorbed by ________. In addition,
they scavenge _____ _______. - ANSWER light, chlorophylls, free radicals
In the reaction center, _____ are transferred out of the photosystem. - ANSWER electrons
In a green plant, the majority of photosynthesis takes place in: - ANSWER the leaves
A graph depicting the efficiency of photon absorption by a pigment molecule as a function of
photon wavelength is known as the........... - ANSWER absorption spectrum of the pigment
After the energy from light, chlorophyll in the reaction center becomes a ................... - ANSWER
strong electron donor
Several dozen of these kinds of molecules help comprise a light harvesting complex: - ANSWER
pigments
In photosynthesis, _______ molecules preferentially absorb violet-blue and red light. - ANSWER
chlorophyll
The reaction center is a ______ ______-pigment complex. - ANSWER Transmembrane protein
, Chlorophyll a is used as photosynthetic pigment by what organisms? - ANSWER - Plants
- Algae
- Protists
- Cyanobacteria
During photosynthesis, a chlorophyll in the reaction center loses its excited electron. How is
that electron restored? - ANSWER From a nearby weak electron donor. (when a chlorophyll
in the reaction center loses its excited electron, A nearby weak electron donor passes a low-
energy electron to chlorophyll to restore it to its original condition
In a chloroplast, _____ sacs stack on top of each other to form a granum. - ANSWER flattened
van Niel introduced the term ______ ______ to denote the process of converting CO2 into
organic matter using the electrons and protons resulting from the splitting of water. - ANSWER
carbon fixation
A chlorophyll molecule is made of a ______ ring and a _____ tail. - ANSWER porphyrin ring and
a hydrocarbon tail
Once a photon is captured by the light harvesting complex, the pigments in it transfer -
ANSWER the energy of excited electrons but not electrons themselves
The role of the light-harvesting complex is to - ANSWER directly absorb photons of light
Pigments are molecules that - ANSWER absorb light in the visible range
Similar to ATP synthesis in mitochondria, ATP synthesis in chloroplasts is achieved by an
_______ mechanism - ANSWER chemiosmotic
