Recall that in the electron transport chain, excited electrons lose energy to NADPH and ATP. In the Calvin cycle,
NADPH and ATP formed in the light reactions lose their stored chemical energy
to build glucose.
Do you actually produce glucose from the Calvin cycle?
Summary of Calvin cycle reactants and products
Three turns of the Calvin cycle are needed to make one G3P molecule that can exit the cycle and go towards making glucose
.
What are the products produced in the Calvin cycle?
The products are
ATP and NADPH, and oxygen
. ATP and NADPH supply energy for carbon fixation in the Calvin cycle . Oxygen is released into the atmosphere.
How are the products produced in the light reactions used in the Calvin cycle?
The light reactions supply the Calvin cycle with
CO2 to produce sugars, and the Calvin cycle supplies the light reactions with sugars to produce ATP
. The light reactions provide ATP and NADPH to the Calvin cycle, and the cycle returns ADP, Pi, and NADP+ to the light reactions.
What happens to CO2 in the Calvin cycle?
In the Calvin cycle,
carbon dioxide molecules (CO2) are combined with each other and with the electrons and Hydrogen ions from NADPH to form glucose
(C6H12O6).
During which stage of photosynthesis is glucose made?
During photosynthesis glucose is produced during the
Calvin cycle
, also known as the dark reactions.
Why does it take three turns of the Calvin cycle to produce G3P the initial product of photosynthesis?
Why does it take three turns of the Calvin cycle to produce G3P, the initial product of photosynthesis?
Because G3P has three carbon atoms, and each turn of the cycle takes in one carbon atom in the form of carbon dioxide
.
How do the light reactions and the Calvin cycle work together to build glucose?
How does the light reactions and Calvin cycle work together to build glucose?
The Calvin Cycle uses the NADPH and ATP from the Light Reactions to “fix” carbon and produce glucose
. Carbon dioxide enters the Calvin Cycle when Rubisco attaches it to a 5-carbon sugar.
What is the product after the Calvin cycle?
The products formed after a single turn of the Calvin cycle are
3 ADP, 2 glyceraldehyde-3-phosphate (G3P) molecules, and 2 NADP
+
. It should be noted, however, that NADP
+
and ADP are not really technically products but they are regenerated and are later used again during the light-dependent reactions.
What is the main product of Calvin cycle how many turns of the Calvin cycle are needed to produce this product?
Because the G3P exported from the chloroplast has three carbon atoms, it takes
three “turns”
of the Calvin cycle to fix enough net carbon to export one G3P.
What are three uses for glucose in a plant fates of glucose?
What are 3 uses for glucose in a plant fates of glucose? Glucose has three main fates:
immediate use to produce ATP molecules (available energy for work), storage for later ATP production, or for use in building other molecules
. Storage as starch (in Plants) or glycogen (in animals).
What are the products of the Calvin cycle and how are they used?
In the Calvin cycle, the energy outputs from the light reactions (
ATP and NADPH) are used to power the conversion of CO2 into the sugar G3P
. As ATP and NADPH are used, they produce ADP and NADP+, respectively, which are returned to the light reactions so that more ATP and NADPH can be formed. You just studied 6 terms!
How does the Calvin cycle make sugar from carbon dioxide?
The Calvin cycle has four main steps:
carbon fixation
, reduction phase, carbohydrate formation, and regeneration phase. Energy to fuel chemical reactions in this sugar-generating process is provided by ATP and NADPH, chemical compounds which contain the energy plants have captured from sunlight.
What happens in Calvin cycle?
The Calvin cycle is part of photosynthesis, which occurs in two stages. In the first stage, chemical reactions use energy from light to produce ATP and NADPH. In the second stage (Calvin cycle or dark reactions), carbon dioxide and water are converted into organic molecules, such as glucose.
How are sugars and other molecules synthesized in the Calvin cycle?
The Calvin Cycle
uses the NADPH and ATP from the Light Reactions to “fix” carbon and produce glucose
. Carbon dioxide enters the Calvin Cycle when Rubisco attaches it to a 5-carbon sugar. Most plants fix CO
2
directly with the Calvin Cycle, so they are called C-3 plants.
How is glucose produced in photosynthesis?
During photosynthesis, plants take in carbon dioxide (CO
2
) and water (H
2
O) from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose.
During which process is glucose produced?
Glucose is produced by plants through
photosynthesis
. In this process, the plant uses light energy from the Sun to convert carbon dioxide and water into glucose and oxygen. Algae and certain bacteria and other unicellular organisms also produce glucose through photosynthesis.
What happens to the glucose produced in photosynthesis?
Glucose made by the process of photosynthesis may be used in three ways:
It can be converted into chemicals required for growth of plant cells such as cellulose
. It can be converted into starch, a storage molecule, that can be converted back to glucose when the plant requires it.
How is G3P converted to glucose?
How does G3P become glucose? A G3P molecule contains three fixed carbon atoms, so
it takes two G3Ps to build a six-carbon glucose molecule
. It would take six turns of the cycle, or 6 CO2start text, C, O, end text, start subscript, 2, end subscript, 18 ATP, and 12 NADPH, to produce one molecule of glucose.
Why does it take 3 turns before producing a G3P?
Why does it take 3 turns before producing a G3P?
Because the G3P exported from the chloroplast has three carbon atoms, it takes three “turns” of the Calvin cycle to fix enough net carbon to export one G3P
. But each turn makes two G3Ps, thus three turns make six G3Ps.
What are the products of the Calvin cycle and what is regenerated?
The immediate products of one turn of the Calvin cycle are
2 glyceraldehyde-3-phosphate (G3P) molecules, 3 ADP, and 2 NADP
+
. (ADP and NADP
+
are not really “products”. They are regenerated and later used again in the light-dependent reactions). Each G3P molecule is composed of 3 carbons.
How do the light reactions and Calvin cycle work together to build glucose Brainly?
this energy carrying the molecules which are made up in stroma where Calvin cycle takes place……. then
RUBP the enzymes which start the cycle is regenerated so the cycle is continue and and it provide the energy and NADPH2 supply electrons for Calvin cycle, which convert carbon dioxide into glucose
. .
Why does Calvin cycle needs the products of light phase?
Because it is needed to convert oxygen into sugar
. Explanation: Although the Calvin Cycle is not light-dependent directly, it is light-Dependent indirectly because the required energy carriers are results of light-dependent processes.
