ATP - Biology Forum

October 25, 2005 at 11:35 pm #2259

Masha23

Participant

I have this AP Bio 12 test coming up in a week. 1 question is something like this.
“How is ATP formed?”

And ATP is formed either by Chemiosis or Substrate-level phosphoratation.

I know what chemiosis does but how does substrate-level phosphoratation produce ATP?

October 25, 2005 at 11:48 pm #31509

mith

Participant

phosphorylation is probably the term you should google for.

October 26, 2005 at 4:11 am #31517

baikuza

Participant

hei..
ATP is Adenosin TriPhosphate
so it could be formed by Nitrogen base (adenosin) and 3 phosphates

it could be said that it from AMP then + Pi become ADP, ADP + Pi become ATP.

hei… try molecular biology..
then try also DNA replication.

hei… also try something similar GTP, CTP..

hope this help

October 26, 2005 at 12:08 pm #31535

victor

Participant

But doing a phosporylation is also the same…just do it by using proton pump..

October 26, 2005 at 1:27 pm #31556

zami’87.

Participant

Hey in chemiosmosis H+ ion gradient drives ATP synthesis. When H+ enter across membrane in direction of lower concentration-actually it crosses through ATP synthase in memebrane , ATP synthase gets energy for making ATP from ADP and Pi.
Substrate level production of ATP is a process in which ATP is produced by enzyme that transfers directly a phosphate group from substrate to ADP.Like in glycolysis from 1,3-biphosphoglycerate to 3-phosphoglycerate.

Zami’87.

October 26, 2005 at 1:35 pm #31559

victor

Participant

quote zami’87.:

Hey in chemiosmosis H+ ion gradient drives ATP synthesis. When H+ enter across membrane in direction of lower concentration-actually it crosses through ATP synthase in memebrane , ATP synthase gets energy for making ATP from ADP and Pi.
Substrate level production of ATP is a process in which ATP is produced by enzyme that transfers directly a phosphate group from substrate to ADP.Like in glycolysis from 1,3-biphosphoglycerate to 3-phosphoglycerate.

Zami’87.

That’s what I mean proton pump… 😀

October 26, 2005 at 7:02 pm #31588

Masha23

Participant

quote donkeyknog:

The chloroplasts are lens-shaped organelles found in leaves and other green organisms. In the green tissue, in the interior of the leaf, are mesophyll. Each mesophyll has about 30 or 40 chloroplasts. Chloroplasts are made up of saclike photosynthetic membranes. These membranes are in such an order that they form stacks called grana. Next to the grana are thylakoids which separate the grana from the stroma, the fluid out side the thylakoid. Inside the grana are the pigments involved in photosynthesis. The pigments in the chloroplast are called chlorophyll

You need glasses. 🙄

& Thanks for all your help.
Much appreciation

May 1, 2008 at 9:21 am #83792

Borisfen

Participant

Substrate phosphorylation is when phosphate group is transfered from some phosphorylated compound to ADP (like in glycolysis).

In case of chemiosmosis ADP is directly phosphorylated by inorganic phosphate.

Take a look at http://www.atpsynthase.info for details.

Regards,

Boris.

Related posts:

Members