Oxidative phosphorylation is the process in which ATP is formed as a result of the
transfer of electrons
What provides energy for oxidative phosphorylation?
In oxidative phosphorylation,
oxygen
must be present to receive electrons from the protein complexes. This allows for more electrons and high energy molecules to be passed along, and maintains the hydrogen pumping that produces ATP.
What is the source of energy for the synthesis of ATP in oxidative phosphorylation quizlet?
The immediate energy source that drives ATP synthesis by ATP synthase during oxidative phosphorylation is the: 1)
transfer of phosphate to ADP.
2) affinity of oxygen for electrons. 3) flow of electrons down the electron transport chain.
What are the main sources of energy that are converted to ATP in the oxidative system?
The oxidative system, the primary source of ATP at rest and during low-intensity activities, uses primarily
carbohydrates and fats as substrates
. Following the onset of activity, as the intensity of exercise increases, there is a shift in substrate preference from fats to carbohydrates.
What is the end product of oxidative phosphorylation?
-The transfer of an electron to molecular oxygen combines with H+ to form water is marked as an end product in the oxidative phosphorylation pathway. So, the correct answer is, ‘
ATP+H2O
.
What are the steps of oxidative phosphorylation?
The three major steps in oxidative phosphorylation are (a) oxidation-reduction reactions involving electron transfers between specialized proteins embedded in the inner mitochondrial membrane;
(b) the generation of a proton (H
+
) gradient across the inner mitochondrial membrane
(which occurs simultaneously with step (a …
What process requires oxygen?
Aerobic Metabolism
Any metabolic process that requires oxygen to occur is referred to as aerobic. Humans, most other multicellular organisms, and some microorganisms require oxygen for the efficient capture of the chemical energy from food and its transformation into the cellular energy form known as ATP.
Which is the source of energy for the synthesis of ATP in mitochondria select the single best answer?
Because the energy to drive ATP synthesis in mitochondria ultimately derives from
the oxidative breakdown of food molecules
, the phosphorylation of ADP to form ATP that is driven by electron transport in the mitochondrion is known as oxidative phosphorylation.
What is the immediate source of energy for ATP synthesis?
Glycolysis makes 2 ATP and the citric acid cycle makes 4 ATP for each molecule of glucose. Therefore
the movement of H
+
across a membrane down its concentration gradient
is the most immediate source of energy for making most of the ATP in your cells.
What are the 3 main energy systems?
- Anaerobic Alactic (ATP-CP) Energy System (High Intensity – Short Duration/Bursts) …
- Anaerobic Lactic (Glycolytic) Energy System (High to Medium Intensity – Uptempo) …
- Aerobic Energy System (Low Intensity – Long Duration – Endurance)
What is the main source of energy for cells?
In fact,
the Sun
is the ultimate source of energy for almost all cells, because photosynthetic prokaryotes, algae, and plant cells harness solar energy and use it to make the complex organic food molecules that other cells rely on for the energy required to sustain growth, metabolism, and reproduction (Figure 1).
What supplements increase ATP?
For example,
creatine
is a widely used nutritional supplement that has been proven in multiple studies to increase skeletal muscle phosphocreatine and free creatine concentrations, which may enhance the ability to sustain high adenosine triphosphate (ATP) turnover rates during strenuous exercise [1].
What are the end products of the oxidative system?
Steps of aerobic glycolysis:
Pyruvate
is created as the end product of the breakdown of glucose. As oxygen is present pyruvate is converted into a substance called ‘acetyl coenzyme A’. Acetyl coenzyme A can then be synthesized in the second and third stages of the aerobic system to create more ATP.
How many ATP is produced in oxidative phosphorylation?
Oxidative phosphorylation produces
24–28 ATP molecules
from the Kreb’s cycle from one molecule of glucose converted into pyruvate.
What is the net gain of ATP molecules in aerobic respiration?
There is net gain of
38 ATP molecules
during aerobic respiration of one molecule of glucose. But in most eukaryotic cells, 2 molecules of ATP are required for transporting the NADH produced in glycolysis into the mitochondrion for further oxidation.
What is the first step in oxidative phosphorylation?
The first step in oxidative phosphorylation is
the oxidation, or loss of electrons
, from NADH and FADH
2
, two of the products from the citric acid cycle.
