Photosynthesis HHMI Interactive questions with
verified answers
At the end of the Calvin cycle, what molecules have the energy that
originally came from light? Ans✓✓✓The molecules that have the
energy that originally came from light is G3P (organic molecules)
At the end of the electron transport chain, where is the light energy that
was absorbed and converted by chlorophyll stored? Ans✓✓✓In light
dependent reactions, energy from the sunlight is absorbed by chlorophyll
and converted into store chemical energy, in the form of the electron
carrier molecule NADPH and the energy currency ATP.
Based on everything you've learned from the animations, what is the
overall purpose of photosynthesis? Ans✓✓✓The overall purpose of
photosynthesis is to make sure light energy converts to chemical energy
in regards to using the product or saving it. Photosynthesis helps create a
living system of organism that need energy to survive.
Describe how ATP is produced in the light reactions. Ans✓✓✓Light is
absorbed and the energy is used to drive electrons from water to
generate NADPH and to drive protons across a membrane. These
protons return through ATP synthase to make ATP.
Describe how oxygen gas (O2) is produced during photosynthesis.
Include the specific structures in the plant where the reaction occurs.
Ans✓✓✓Plants, algae, and some bacteria capture light energy form the
sun and convert it to chemical energy. These organisms produce
carbohydrates from simple building blocks like water and carbon
, dioxide from the environment and from the process releases oxygen.
Ultimately water splits and releases electrons. This whole process occurs
in its light dependent reactions.
Describe how the proton (H+ ) gradient is used to make ATP.
Ans✓✓✓ATP synthase uses the potential energy of the proton gradient
to combine ADP with inorganic phosphate to form ATP. In this way, the
potential energy is transformed into chemical energy stored as ATP.
Describe the path of an electron from a molecule of water to the sugar
G3P Ans✓✓✓photosystem II -> cytochrome complex -> photosystem I
-> ATP Synthase -> calvin cycle -> G3P
How does a plant increase its biomass? Ans✓✓✓Through the formation
of new organic molecules, the thylakoid membranes contain specialized
molecules that work together to perform light reactions.
In what plant structures does photosynthesis occur? Make your
description as specific as you can Ans✓✓✓The plant transports organic
molecules produced in its leaf cells to other cells via the plumbing
system found in vesicular bundles. Chloroplasts are the organelles where
photosynthesis occurs. Carbon dioxide from the air enters the leave
through small pores called stomata on the outer cell layer. Oxygen
formed during photosynthesis also exits the plant through the stomata.
Phase 1- Carbon Fixation (description) Ans✓✓✓In phase one,
inorganic carbon, in the form of carbon dioxide from the air, is
incorporated into organic molecules, a process known as carbon fixation.
verified answers
At the end of the Calvin cycle, what molecules have the energy that
originally came from light? Ans✓✓✓The molecules that have the
energy that originally came from light is G3P (organic molecules)
At the end of the electron transport chain, where is the light energy that
was absorbed and converted by chlorophyll stored? Ans✓✓✓In light
dependent reactions, energy from the sunlight is absorbed by chlorophyll
and converted into store chemical energy, in the form of the electron
carrier molecule NADPH and the energy currency ATP.
Based on everything you've learned from the animations, what is the
overall purpose of photosynthesis? Ans✓✓✓The overall purpose of
photosynthesis is to make sure light energy converts to chemical energy
in regards to using the product or saving it. Photosynthesis helps create a
living system of organism that need energy to survive.
Describe how ATP is produced in the light reactions. Ans✓✓✓Light is
absorbed and the energy is used to drive electrons from water to
generate NADPH and to drive protons across a membrane. These
protons return through ATP synthase to make ATP.
Describe how oxygen gas (O2) is produced during photosynthesis.
Include the specific structures in the plant where the reaction occurs.
Ans✓✓✓Plants, algae, and some bacteria capture light energy form the
sun and convert it to chemical energy. These organisms produce
carbohydrates from simple building blocks like water and carbon
, dioxide from the environment and from the process releases oxygen.
Ultimately water splits and releases electrons. This whole process occurs
in its light dependent reactions.
Describe how the proton (H+ ) gradient is used to make ATP.
Ans✓✓✓ATP synthase uses the potential energy of the proton gradient
to combine ADP with inorganic phosphate to form ATP. In this way, the
potential energy is transformed into chemical energy stored as ATP.
Describe the path of an electron from a molecule of water to the sugar
G3P Ans✓✓✓photosystem II -> cytochrome complex -> photosystem I
-> ATP Synthase -> calvin cycle -> G3P
How does a plant increase its biomass? Ans✓✓✓Through the formation
of new organic molecules, the thylakoid membranes contain specialized
molecules that work together to perform light reactions.
In what plant structures does photosynthesis occur? Make your
description as specific as you can Ans✓✓✓The plant transports organic
molecules produced in its leaf cells to other cells via the plumbing
system found in vesicular bundles. Chloroplasts are the organelles where
photosynthesis occurs. Carbon dioxide from the air enters the leave
through small pores called stomata on the outer cell layer. Oxygen
formed during photosynthesis also exits the plant through the stomata.
Phase 1- Carbon Fixation (description) Ans✓✓✓In phase one,
inorganic carbon, in the form of carbon dioxide from the air, is
incorporated into organic molecules, a process known as carbon fixation.
