easy question?

Question

The more oxygen the muscles receive, the more energy you have.

True
False

Answer 1

true

Answer 2

Not quite....it is the blood circulation and foods we eat that give you energy.

The muscles are biological machines which convert chemical energy into force and mechanical work. The energy for contraction comes from the mechanical reaction between the food we eat and the oxygen we breathe. Almost all the sugars in food are converted into glucose, the fuel of muscles. Muscles, therefore, need a good blood supply to bring nutrients and oxygen and to remove chemical waste products. The actual chemical process involves the breakdown of glucose to carbon dioxide and water. This process releases energy which is used by the muscle proteins to cause contraction. This process is known as aerobic glycolysis and involves first the production of a 3-carbon substance, pyruvate, which when combined with oxygen, is broken down further to water and carbon dioxide by a cycle of enzymes in the mitochondria, the Krebs cycle. This chemical reaction requires a great supply of oxygen, which is often not available during intense exercise. During exercise, a
muscle requires about fifty times more oxygen per minute than at rest. To overcome this low level of oxygen the muscles are able to convert the glucose into a substance called lactic acid, without the use of oxygen, which still gives the necessary release of energy. For a short period of time, this process, called anaerobic glycolysis, is a highly efficient means of harvesting energy

Answer 3

False

Answer 4

True

Answer 5

True

Answer 6

True.

Answer 7

true and false
too much of anything is bad, so muscles should recive 'just' of everything.

Answer 8

True, non-smokers have more endurance than smokers.

Answer 9

true

Answer 10

true