The first stable product of the Calvin cycle is
3-PGA (3-phosphoglyceric acid)
. It is a 3 carbon compound so the Calvin cycle is also called the C
3
cycle.
What is the first stable product of carbon dioxide fixation in Calvin cycle?
Hint: The Calvin cycle is a process in which the first stable product of CO2 fixation is
C3 acid
that is phosphoglyceric acid. Calvin cycle and Hatch-Slack cycles are two carbon dioxide fixation pathways.
What is the first product of Calvin cycle?
Carbon dioxide combines with ribulose‐1, 5‐biphosphate (RuBp) to produce a transient intermediate compound. The intermediate compound splits up immediately in the presence of water to form the two molecules of
3‐phosphoglycerate or 3‐PGA
. It is the first stable product of photosynthesis.
Is the first stable product of C3 cycle?
In C3 plants, the first stable product formed during dark reaction is
3-phosphoglyceric acid
. Since, it is a 3-carbon compound hence, the pathway is referred as C3 pathway. Oxaloacetic acid (OAA) is the first stable compound in C4 plants.
What is the first stable product of photosynthesis?
The first product of photosynthesis is a threecarbon compound called phosphoglyceric acid and phosphoglyceraldehyde. Almost immediately, two of these join to form a
glucose molecule
.
What are the 3 stages of Calvin cycle?
The Calvin cycle reactions can be divided into three main stages:
carbon fixation, reduction, and regeneration of the starting molecule
.
What is the main product of the Calvin cycle?
The reactions of the Calvin cycle add carbon (from carbon dioxide in the atmosphere) to a simple five-carbon molecule called RuBP. These reactions use chemical energy from NADPH and ATP that were produced in the light reactions. The final product of the Calvin cycle is
glucose
.
What is the first stable product of co2 fixation?
When photosynthesis was stopped after 2 seconds, the principal radioactive product was
Phosphoglyceric acid
, which was identified as the first stable compound formed during carbon dioxide fixation in green plants.
What are the two Assimilatory powers?
– The assimilatory power in photosynthesis is the power produced in the form of
ATP and NADPH2
. These molecules are formed during the evolution of oxygen and the photolysis of water.
Why Calvin cycle is known as C3 cycle?
The most common set of carbon fixation reactions is found in C3-type plants, which are so named
because the major stable intermediate is the 3-carbon molecule, glyceraldehyde-3-phosphate
. These reactions, best known as the Calvin cycle (Figure 6.2. 6), fix CO
2
onto the pentose, ribulose 1,5-bis-phosphate (RuBP).
What is the first product of C3?
The three types of plants are differentiated on the basis that in C3 plants the first stable product of photosynthesis is
3-carbon compound (phosphoglyceric acid)
and in C4 plants, 4-carbon compound (oxaloacetic acid or malic acid) is the first stable compound. In CAM cycle also, the first product is malic acid.
Which pair of C3 maize is wrong?
Correct option a C3-Maize Explanation :Maize is
C4
-plant C4 -plant have Kranz type anatomy of leaves. PGA 3-phosphoglyceric acid is found during Calvin cycle.
Which plant is C4?
Examples of C
4
plants include
sugarcane, maize, sorghum, amaranth
, etc. Compare: C3 plant, CAM plant. See also: C4 carbon fixation pathway, Calvin cycle.
Is C4 a tomato plant?
Tomato is a C
3
plant
. … Other C
3
plants are wheat, rice, soybeans, etc. Around 85% of plants are C
3
plants.
What are the 3 products of photosynthesis?
Photosynthesis involves three elements: carbon, hydrogen, and oxygen. You have seen that the products of photosynthesis are
oxygen and glucose
.
What are the 2 by products of photosynthesis?
The products of photosynthesis are
glucose and oxygen
.
Although the hydrogen atoms from the water molecules are used in the photosynthesis reactions, the oxygen molecules are released as oxygen gas (O
2
).
