Where is PDC most active?

Where is PDC most active?

mitochondria

Why is PDH irreversible?

Pyruvate dehydrogenase (PDH) catalyzes an irreversible and no return metabolic step because its substrate pyruvate is gluconeogenic or anaplerotic, whereas its product acetyl-CoA is not [62–65]. In addition, PDH substrates and products also control PDK activity. Pyruvate inhibits, whereas acetyl-CoA stimulates, PDK.

How is normal blood pH restored?

After exercise, an athlete’s blood pH has dropped below the normal level. How will normal blood pH be restored? An increase in O2 concentration in the plasma will lead to an increase in H+ concentration.

Which of the following components of the cell membrane is responsible for active transport?

For the most part, carrier proteins mediate active transport while channel proteins mediate passive transport. Carrier proteins create an opening in the lipid bilayer by undergoing a conformational change upon the binding of the molecule. Channel proteins form hydrophilic pores across the lipid bilayer.

Which of the following directly produces the most ATP?

Explanation: The electron transport chain generates the most ATP out of all three major phases of cellular respiration. Glycolysis produces a net of 2 ATP per molecule of glucose.

Does glycolysis produce co2?

Since glycolysis of one glucose molecule generates two acetyl CoA molecules, the reactions in the glycolytic pathway and citric acid cycle produce six CO2 molecules, 10 NADH molecules, and two FADH2 molecules per glucose molecule (Table 16-1).

What gas is the final electron acceptor?

Oxygen

How many ATP are formed in glycolysis?

2 ATP

Can glucose be broken down without oxygen?

Without oxygen, organisms can split glucose into just two molecules of pyruvate. This releases only enough energy to make two ATP molecules. With oxygen, organisms can break down glucose all the way to carbon dioxide. This releases enough energy to produce up to 38 ATP molecules.

Why do organisms need both glucose and ATP?

Why Organisms Need Both Glucose and ATP Glucose is also more stable than ATP. Therefore, glucose is better for storing and transporting energy. However, glucose is too powerful for cells to use. ATP, on the other hand, contains just the right amount of energy to power life processes within cells.

Where is glucose energy stored?

The energy in glucose is stored primarily in the carbon-carbon and carbon-hydrogen bonds. In fact, anything with carbon-carbon and carbon-hydrogen bonds stores energy. Other common examples include gasoline, coal, and fat.

Which has more energy glucose or ATP?

Explanation: Given that the oxidation of, for example, glucose ( C6H12O6 ) by cellular respiration can produce 38 ATP, it would follow that there is more energy in a molecule of sugar than a molecule of ATP.

Is all food converted to glucose?

This energy comes from the food we eat. Our bodies digest the food we eat by mixing it with fluids (acids and enzymes) in the stomach. When the stomach digests food, the carbohydrate (sugars and starches) in the food breaks down into another type of sugar, called glucose.

What foods have no glucose?

Thirteen foods that won’t raise blood glucose

• Avocados.
• Fish.
• Garlic.
• Sour cherries.
• Vinegar.
• Vegetables.
• Chia seeds.
• Cacao.

Can the body convert protein to glucose?

Excess amino acids must be converted into other storage products or oxidized as fuel. Therefore, in theory, the excess ingested protein could, through the process of gluconeogenesis, produce glucose. This would mean that 100 g of protein could produce ~50 g of glucose.

What foods increase sugar levels?

In general, foods that cause blood sugar level to rise the most are those that are high in carbohydrates, which are quickly converted into energy, such as rice, bread, fruits and sugar. Next are foods high in protein, such as meats, fish eggs, milk and dairy products, and oily foods.