Questions about science please help me with the answers, thank you .

The most direct is bioenergetic, which is the energy ATP produced by the decomposition of sugar and fat in the body

ATP, on the other hand, is ingested from outside food, including animals, plants, and microorganisms, and animals feed on plants.

And where does the energy in the body of plant microorganisms come from? Plants and microorganisms get their energy from solar photosynthesis, and there are a few microorganisms that can live by breaking down organic matter and reducing inorganic matter, but at the end of the day, the energy comes from the sun.

Supported by bioenergy produced by the oxidative decomposition of organic matter, the energy in the body is in the form of ATP.

The energy generated by what you eat! For example, the most direct energy source is ATP. There are also glucose, phospholipids, ......

Ultimately, it comes from the sun, and the sun itself provides a lot of heat, you know. Plants store solar energy in the form of organic matter through photosynthesis, while humans and other animals eat plants to absorb organic matter from plants to support various movements of the human body.

The chemical energy in food is digested, decomposed and absorbed in the body, and is turned into energy that can be used by the human body by mitochondria, which is ATP to put it bluntly

But how does the chemical energy of food come from, to put it bluntly, photosynthesis, so it is fundamentally solar energy.

This is related to how motion is generated, which is generated by the theorem of inertia, kinetic energy. So our bodies can move at any time.

Science:1. Either in the veins or arteries is arterial blood, for example, the pulmonary arteries are venous blood, and the pulmonary veins are arterial blood.

2。Arterial blood is pumped through the heart to the body, reaches the capillary network, releases oxygen, nutrients, etc., ingests carbon dioxide, and the body's metabolic waste products return to the veins, becoming venous blood.

3。Yes, the large arteries and large veins are just the same as the tubing system, the tubes are transported, and the real gas is exchanged in the capillary network.

1 Not necessarily, for example, venous blood flows in the pulmonary arteries, while arterial blood flows in the pulmonary veins, because arterial blood refers to blood that contains more oxygen. The oxygen in the blood is replenished in the lungs, so the blood vessels (i.e., the pulmonary veins) that transport blood from the lungs to the outside have a higher oxygen content and are arterial blood, while the pulmonary arteries are returned to the lungs after a blood circulation, so the oxygen content is low, and it is venous blood.

2 Human blood circulation is closed, and it is composed of two pathways: systemic circulation and pulmonary circulation. Blood ejects from the left ventricle and flows to the capillaries of the whole body through the active fat and its branches at all levels, where it exchanges substances with the interstitial fluid, supplies oxygen and nutrients to the tissue cells, transports carbon dioxide and metabolites, and turns arterial blood into venous blood; It then flows back to the right atrium through the confluence of the superior and inferior vena cava at all levels, and this cycle is the systemic circulation. Blood ejects from the right ventricle and flows through the pulmonary artery to the pulmonary capillaries, where it exchanges gas with alveolar air, absorbs oxygen and excretes carbon dioxide, and venous blood becomes arterial blood; It then flows back to the left atrium through the pulmonary veins, and this cycle is called the pulmonary circulation.

3 The exchange of substances inside and outside the capillaries, including gas exchange.

c. Red phosphorus, dark red solid.

It can react with oxygen to form phosphorus pentoxide and consume oxygen.