Can anyone explain Photosynthesis to me?

Question

I've read the chapter in my text book, looked thourh all the worksheets, read websites, everything.
It just seems like I just can't get it!
What does it have to do with glucose?
Does it take water in, or push it OUT?

I'm so confused please explain as simply as you can.
Or suggest a good website.

Answer 1

Photosynthesis is EXTREMELY complicated, so don't be ashamed! I'll make an attempt to explain it as simply as possible. There are two part to photosynthesis, the light dependent reaction and the light independent reaction

First, light hits a cluster of chlorophyll, the pigment that makes plants green. The energy from this light is transferred around until it hits a special type of chlorophyll called Photosystem 1. It releases the energy in the form of electrons. The electron is then transferred around until it reaches an energy level high enough to bind with NADP+ to form NADPH. Think of this energy build-up as a set of stairs. With each transfer, the electron moves up a step until it reaches the goal on the top: NADPH.

While all this is happening, the sunlight described earlier splits apart a molecule of water in a process called photolysis. The H2O is split into electrons, protons, and oxygen. The protons eventually get full inside the thylakoid membrane, where all this is taking, and they want out. To get out, they must pass through ATP synthase, an enzyme. As they pass, they give enough energy to create ATP by binding ADP and a phosphate group.

Next is the light-independent reaction, or the Calvin-Benson cycle, named after the lowlifes who discovered this process to torment you (one of my rare brushes with humor). It takes place in the stroma of a chloroplast, the fluid interior.

First, 6 carbon dioxide molecules from the air comes into the chloroplast. An enzyme, Rubisco, binds these 6 molecules with 6 molecules of a 5-carbon substance called ribulose bisphosphate, or RuBP, for short. This connection forms 6 molecules of an 6 carbon unstable intermediate (name is not important). Since it's unstable, it falls apart into 12 molecules of phosphoglycerate, or PGA. At this point, the ATP and the NADPH that we created in the light dependent reaction come in. 12 ATP molecules and 12 NADPH molecules come in and energize the PGA to form 12 molecules of phosphoglyceraldehyde, or PGAL (thank god for abbreviations!). At this point, there is a fork in the road. Two 3-carbon PGALs come together to form phosphorylated glucose, or a glucose with a phosphate group. The other 10 mosey over and are energized by 6 molecules of ATP to form 6 molecules of RuBP, starting the Calvin-Benson cycle all over again. The glucose can then be used for many processes, such as in aerobic (or cellular) respiration.

I hope this clears up a great deal for you, but as this is the internet, I can't visually help you. Thanks for offering such a great question!

Answer 2

Photosynthesis is a process with the help of which green plans make their own food in the form of glucose. it is divided in two parts i.e, Light reactions and dark reactions.

6 CO2 + 12 H2O + light → C6H12O6 + 6 O2 + 6 H2O
carbon dioxide + water + light energy → glucose + oxygen + water

it take 12 units of water first and releases 6 of it as waste uses 6 for glucose synthesis

go through the attached link, it will help you lot.

Answer 3

Um, i imagine photosynthesis because it does come from the solar. Then the photosynthesis turns into nutrition for the vegetation which the animals devour off.... Thats my clarification yet i need to admit i'd be incorrect even though it type of feels to make experience. xx