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2021-05-15

What molecule is the primary source of energy for biochemical processes?

What molecule is the primary source of energy for biochemical processes?

ATP

What do you know about Chemiosmosis?

Chemiosmosis is the movement of ions across a semipermeable membrane bound structure, down their electrochemical gradient. An example of this would be the formation of adenosine triphosphate (ATP) by the movement of hydrogen ions (H+) across a membrane during cellular respiration or photosynthesis.

How Gasdermin pore formation and interleukin release contribute to an organism’s defense against a bacterial pathogen?

against a bacterial pathogen. Gasdermin pore formation leads to the flow of water into the cell, which can cause the infected cell to burst. Due to phagocytes digesting the compounds of the cell along with other pathogens, this would prevent the spread of infection.

What do you mean by Chemiosmotic hypothesis?

The chemiosmotic hypothesis suggests that the action of ATP synthase is coupled with that of a proton gradient. It is the action of the proton gradient that causes a proton motive force that allows ATP synthase to phosphorylate ADP and inorganic phosphate to ATP.

What is the role of ATP synthase in aerobic respiration?

ATP synthase is an enzyme that directly generates adenosine triphosphate (ATP) during the process of cellular respiration. ATP synthase forms ATP from adenosine diphosphate (ADP) and an inorganic phosphate (Pi) through oxidative phosphorylation, which is a process in which enzymes oxidize nutrients to form ATP.

Which process yields the highest amount of ATP in the cell?

The Krebs cycle takes place inside the mitochondria. The Krebs cycle produces the CO2 that you breath out. This stage produces most of the energy ( 34 ATP molecules, compared to only 2 ATP for glycolysis and 2 ATP for Krebs cycle).

How does Oligomycin affect ATP production?

Oligomycin A inhibits ATP synthase by blocking its proton channel (FO subunit), which is necessary for oxidative phosphorylation of ADP to ATP (energy production). This process is due to facilitated diffusion of protons into the mitochondrial matrix through an uncoupling protein such as thermogenin, or UCP1.

Why is Antimycin a poison?

Antimycin A is an inhibitor of cellular respiration, specifically oxidative phosphorylation. This inhibition also results in the formation of the toxic free radical superoxide. The rate of superoxide production exceeds the cellular mechanisms to scavenge it, overwhelming the cell and leading to cell death.

What are Uncouplers give example?

The following compounds are known to be classical uncouplers: 2,4-dinitrophenol (DNP) 2-tert-butyl-4,6-dinitrophenol (Dinoterb) 6-sec-butyl-2,4-dinitrophenol (Dinoseb)

Where can Uncouplers be found?

Uncoupling proteins (UCPs) are mitochondrial transporters present in the inner membrane of mitochondria. They are found in all mammals and in plants. They belong to the family of anion mitochondrial carriers including adenine nucleotide transporters.

What is Oligomycin used for?

Oligomycin has been used to probe tumor cell dependence on glycolytic metabolism,176 the effect of F1F0-ATPase inhibition and ATP depletion on tumor necrosis factor-α (TNF)-induced apoptosis,177,178 and the role of oxidative phosphorylation on the activation of BAX and Bak tumor suppressors.

What is Q cycle in photosynthesis?

The process by which the electrons are transferred from the ubiquinol to cytochrome c is known as the Q cycle. This cycle actually consists of two mini-cycles called half-cycles. In the first half-cycle, a ubiquinol molecule attaches onto complex III and transfers the two electrons to the cmplex.

What is quinone cycle?

An oxidized quinone (perhaps the product of the first quinol oxidation in the Qo site) binds to the Qi site, where it can be reduced by heme bH. A full reaction cycle involves the successive oxidation of two quinol molecules by the same concerted/consecutive mechanism at the Qo site.

What is Q cycle in biochemistry?

The Q cycle (named for quinol) describes a series of reactions that describe how the sequential oxidation and reduction of the lipophilic electron carrier, Coenzyme Q10 (CoQ10), between the ubiquinol and ubiquinone forms, can result in the net movement of protons across a lipid bilayer (in the case of the mitochondria.