How do proteins use ATP?
How do proteins use ATP?
Muscle contraction ATP is critical for the contraction of muscles; it binds to myosin to provide energy and facilitate its binding to actin to form a cross-bridge. ADP and phosphate are then released and a new ATP molecule binds to myosin.
What is responsible for ATP production?
Most of the ATP in cells is produced by the enzyme ATP synthase, which converts ADP and phosphate to ATP. ATP synthase is located in the membrane of cellular structures called mitochondria; in plant cells, the enzyme also is found in chloroplasts.
How much ATP does protein synthesis use?
Con- sequently the ATP required for protein biosynthesis from preformed amino acids is 4 x total amino acid content. According to the data in Table 1, the protein in one g of cells contains 47.85 moles x 10-4 amino acids. The ATP required for protein biosynthesis is therefore 4 x 47.85 = 191.4 moles x 10-4 per g cells.
What is the role of ETC?
The ETC is the most important stage of cellular respiration from an energy point of view because it produces the most ATP. When a cell needs energy, it breaks the third phosphate group bond and uses the resulting energy.
What is an important way of making ATP without oxygen?
An important way of making ATP without oxygen is called fermentation. It involves glycolysis but not the other two stages of aerobic respiration. Many bacteria and yeasts carry out fermentation. People use these organisms to make yogurt, bread, wine, and biofuels.
What are the products of anaerobic respiration in yeast and in humans?
Carbon dioxide, alcohol and energy.
Where is carbon dioxide and oxygen exchanged?
Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.