ch 7 bio
When a molecule absorbs a photon, one of its electrons is raised to the ________ state.
excited
Where is chlorophyll found in chloroplasts?
in thylakoids
What part of a plant can be termed its "food factory"?
leaves
Which of the following depicts the correct order of the light reactions of photosynthesis?
light capture -> electron excitation -> electron transport -> making ATP -> making NADPH
What is the end result of the Calvin cycle?
produces sugar
Through what structure(s) do plants obtain most of their water?
roots
What are grana?
stacks of membranous sacs
What provides the energy to drive the photosynthesis chemical reaction?
sunlight
About _________ of the energy produced by your body each day is used to sustain your brain.
20%
Which of the following are needed for the Calvin cycle?
ATP, NADPH, and carbon
Compare the electron transfer process of photosynthesis with the electron transfer chain of cellular respiration. Which of the following are similarities?
All of the listed responses are similarities.
Which of the following occurs in the first photosystem?
Photons excite electrons for transfer to an electron transport chain
Which of the following is the process that ultimately feeds the world?
Photosynthesis
Which metabolic pathways directly involve oxygen?
Photosynthesis and the electron transport chain
What are the products of photosynthesis?
O2 and glucose
Photosynthetic organisms include __________.
both protists and bacteria
what compound is found at the reaction center of a photosystem
chlorophyll a
Which wavelength(s) of light is/are best absorbed by the chlorophyll in plants?
Blue and red
What do cell respiration and photosynthesis have in common?
Both produce (and use) ATP.
What are the reactants for photosynthesis?
CO2 and H2O
The mass of a plant comes from __________.
Carbon
Using the energy from light, what is the initial electron donor in photosynthesis?
Chlorophyll
Which stage is responsible for completing the breakdown of glucose all the way to CO2 which is then released as a waste product?
Citric acid cycle
The Calvin cycle makes direct use of ___ to make___.
D) CO2, ATP, and NADPH...sugar
which of the following is a way that a molecule releases energy gained by absorption of a photon?
Heat, florescent, light (all of the above)
What part of a plant can be termed its "food factory"?
Leaves
When oxygen is released as a result of photosynthesis, what is its source?
Splitting of H2O
A plant requires which of the following for growth?
Sunlight, H2O, and CO2
What pathway in photosynthesis captures carbon dioxide?
The Calvin cycle
Why are leaves green?
The chlorophyll and other pigments reflect green light while absorbing other light.
What is one reason why plants have accessory pigment molecules, like chlorophyll b and carotenoids?
To absorbs energy in parts of the electromagnetic spectrum that chlorophyll a cannot
How is breathing related to cellular respiration?
When you inhale you breathe in O2 which is delivered to your cells and is used during cellular respiration. CO2 is a waste product of cellular respiration and is exhaled.
Stroma is the __________.
thick fluid found inside the chloroplast
Within the inner membrane of a chloroplast, interconnected sacs of membrane called ______ are suspended in a thick fluid called the ______.
thylakoids... stroma