Explain the phases of photosynthesis

Answer 1

Photosynthesis makes life posible. It happens when the sun's energy, carbon dioxide, and water go into a plant. Then the plant turns it into oxygen which helps animals breathe. This helps the plant live. Also when animals eat plants the energy from the sun is passed on to them.

Photosynthesis is when the sun's energy, carbon dioxide and water go into a plant

Answer 2

Photosynthesis is the process in which plants light energy from the sun and turn it into chemical energy. First, chlorophyll traps the sunlight in its leaves. Then, the light gives the plant the energy it needs to start the food making process, followed by the roots sucking up nutrients to be mixed with water and the carbon dioxide in the leaves to produce sugar. Lastly, the plant throws out its waste, which is oxygen.

Answer 3

There are two parts to photosynthesis. One is called the light-dependent reactions; the other is the light-independent reactions.

In the light-dependent reactions, there are two photosystems. In PII, H20 splits into H+ and O2. Since there are two hydrogen and only one oxygen molecule, it is written out as 1/2 O2. The splitting of water creates electrons. Sunlight hits the electrons and they become excited, so they travel upwards to the primary electron receptor and bounce down the electron transport chain until they reach PI.

Energy from the traveling electrons travel through the ATP synthase along with H+, which makes phosphate. Outside, ADP is made into ATP by adding that phosphate.

Meanwhile, light hits the electrons and they become re-energized, traveling back up to a second primary electron receptor and going down the electron transport chain until it travels outside. There, two electrons make NADP+ and H+ into NADPH.

The ATP and NADPH travel onto the Calvin Cycle.

In the light-independent reactions, 3 CO2s enters the cycle and latches onto 3 5-carbon RuBPs (PCCCCCCP). This is unstable, therefore each one breaks into 2 3-carbons (CCCP and CCCP)

Traveling onward, ATP gives up a phosphate to one, so a set looks like: PCCCP and PCCCP. ATP is now ADP.

Then, NADPH oxidizes them so a set looks like: PCCCH and PCCCH. NADPH is now NADP+.

There are now 6 G3P (previously known as PGAL) molecules.

1 breaks off and while the five move on. This is so that when another round occurs, the 2 3-carbons can form a sugar.

As for the other five, 3 ATP give up a phosphate while the hydrogen drops, so now there are 3 ADP. It would look like PCCCP again.

The five rearrange themselves so that there are three PCCCCCPs again, the name being RuBP.

The cycle begins all over again.

Answer 4

a. Capturing of energy from the sunlight

b. Using the energy to make ATP and reducing power in the form of a

compound called NADPH

c. Using ATP and NADPH to power the synthesis of organic molecules from

CO2 in the air (carbon fixation).

Answer 5

light reaction I, light reaction II, dark reaction (calvin cycle)