So is the blood of living things red?

No. Higher animals: red;

Horseshoe crab: blue; "Green Blood Bug", Sea Whistle and Cuttlefish: Green.

Shrimp and crab: pale cyan.

White blood fish", snails: white;

Earthworms: rose-colored.

Scallop gill insects, broom caterpillars, green blood insects: all at once green, all at once red.

Star insects, polychaetes, Changsha silkworms and brachiopods: purplish-red, brown alternate;

Insects: yellow, orange-red, blue-green, and green.

Marine arthropods and molluscs: turquoise or white;

Icefish, whose blood is yellow;

Some fish in the Antarctic ocean: translucent white;

The vast majority of vertebrates: red, invertebrates: some are blue, some are purplish-red, green;

The blood of various animals is also different in color due to the difference in composition and physiological state, for example, the blood of most vertebrates is red, and the blood of invertebrates is blue, and some are purple-red and green.

In some invertebrates, the blood of most animals does not contain hemoglobin, such as mollusks (cephalopods and turtles, etc.) and arthropods (shrimp, crabs and horseshoe crabs) contain hemocyanin, so they are blue. Some polychaetes (e.g., Broomcaterpillars, Chlorochedrae) have hemochlorogenin in their blood, so they are green.

There are many colors that are not all about blood, and in addition to red, there are also blue and green.

Animal blood is produced with the production of the circulatory system. It is generally composed of plasma and blood cells. In very low animals, oxygen only needs to be physically dissolved in the blood when circulating in the blood, but in most animals, oxygen transportation needs to rely on a special medium in the blood - hemochromatin (or hemoglobin).

Hemoglobin is a protein containing metallic elements that binds to oxygen in tissues with high partial pressure of oxygen (lungs or gills), and can release oxygen in tissues with low partial pressure of oxygen, thus acting as a carrier of oxygen and transporting oxygen. For example, the hemoglobin in human blood is a red protein that contains iron.

The blood of crabs is blue.

Not all living things have red blood. It's like a spider's blood is green. Earthworm blood is rosy red.

Human blood is red because human blood contains a large amount of hemoglobin, and the main component of hemoglobin is iron, so the blood appears red. Mussels and horseshoe crabs have hemoglobin in their blood, which does not contain iron, but copper, so it is blue. The blood of insects is actually an internal medium that transports nutrients and metabolic wastes, so it is also known as hemolymph.

It is made up of plasma and blood cells. Because respiration takes place in the trachea, insect blood does not have respiratory pigments. Insect blood also often comes in a variety of colors, with the most common ones being yellow, orange-red, blue-green, and green.

<> their blood contains pigmented substances that give their blood a specific color, such as carotene, riboflavin, and flavin nucleotides in the giant silkworm moth; flavonoids, fluorescein and folic acid in silkworm moths; The green color of the butterfly larval blood is the result of the presence of a yellow protein (with an accessory group of -carotene and lutein) and a blue protein (with an accessory group of biliverdin). Similar components are found in the green blood of scattered migratory locusts, but there is a green worm whose green blood is the result of the presence of a -carotene-protein complex and a similar anthocyanin. These pigments in the blood of insects are thought to be obtained from food.

In addition, the color of insect blood is also related to sex, such as the blood of butterfly larvae, pupae and adults, with females being green and males yellow or colorless. The blood of insects that like to eat young bamboo shoots is white. The blood of most insects is different.

The blood of horseshoe crabs is blue, while the blood of shrimp is pale green. The color of the blood depends on the color of the hemoglobin, which in turn depends on the color of the metals that make up the hemoglobin. Human blood is iron, so the blood of humans or higher animals is red.

Horseshoe crab"Hemoglobin"It's made of copper, so it's blue. In fact, not only the blood of horseshoe crabs is of different colors, but also the blood of some other lower animals.

For example, in marine arthropods and mollusks, their blood is turquoise or white and other colors. We know shrimp and crabs, and their blood is blue; There is also a fish called the icefish, which has yellow blood; In Antarctic waters, the blood of some fish is translucent white; There is also an animal called a fan, whose blood can change color and turn red and green. Of course, the reason for the discoloration of these animals is that their blood uses other elements to transport oxygen.

But what exactly the elements, and what characteristics they have, remains a mystery. Due to the difference in composition and physiological state, the blood of various animals is also different in color.

Not all living things on Earth have red blood; This is because there are some organisms that have elements in their bodies that are different from some elements in other animals, and there is a high chance that some other pigments will be produced.

It's not in the blood of some creatures, their blood is blue or green, or it's yellow. Because each creature eats differently and has a different body structure.

No. Most of the animals on land have red blood, but there are some insects, invertebrates that exhibit blue and purplish red, some colors of green.

There are some animals without cervical vertebrae whose blood is blue, which is related to the type of animal and the hemoglobin in it.

The blue blood may be due to a bacterial infection in the body, such as horseshoe crabs, the hemoglobin of horseshoe crabs is mainly divided into chains of copper, and copper is blue when combined with oxygen, so the blood of horseshoe crabs is blue and medium-colored.

Because the color of round blood is determined by the material element in the trembling hemoglobin, the main component of hemoglobin in blue blood organisms is copper, which will appear blue when combined with oxygen.

If there is blue blood, Kenji Chundong must not be a Morishin earthling, because the blood of all creatures on the earth is red, then it must be aliens, which is terrifying.

If there is not enough oxygen, the blood will darken, and then it will turn cyan, and we can see the blue blood.

Not all animals' blood is red.

The composition and physiological state of the blood of various animals are different, so their blood will also show different colors. Most vertebrate blood is red, while invertebrate blood is blue or green.

For example: the color of the blood of earthworms is rosy red, while the blood of cuttlefish living in the sea is green, and as for shrimp and crabs, their blood is white like milk. The blood of insects contains special pigment substances, which allows their blood to take on different colors, such as green, orange, pink, etc.

Venous blood has low oxygen content and is dark red in color, and arterial blood is high in oxygen and bright red in color. Blood is a suspension made up of plasma and blood cells. Normally, plasma is yellowish.

Under the microscope, three types of blood cells can be seen, which are red red blood cells, white white blood cells, and platelets. The largest number of red blood cells in the blood is nearly 1,000 times that of white blood cells and 30 to 50 times that of platelets.

The blood is red because of red blood cells. Because red blood cells are the most important cell components in the blood, and red blood cells are cells without a nucleus, their cytoplasm is filled with hemoglobin (HB), which is an iron-containing protein that accounts for about 33 of the weight of red blood cells. Hemoglobin is red because the function of its functional group on the amino group is determined by ferrous ions, and because of the hail, many red blood cells together become red.

Blood is a red, opaque, viscous fluid that flows through a person's blood vessels and heart. Blood is composed of plasma and blood cells, a liter of plasma contains 900-910 grams of water, 65-85 grams of protein and 20 grams of low-molecular substances, low-molecular substances have a variety of electrolytes and organic compounds, blood cells include red blood cells, white blood cells and platelets.

The average lifespan of red blood cells is 120 days, the lifespan of white blood cells is 9-13 days, and the lifespan of platelets is 8-9 days. In general, 40ml of blood cells per person per day will age and die. At the same time, there is also a corresponding number of cells to be born.

The function of blood includes two parts: blood cell function and plasma function, and has four functions: transportation, regulating human body temperature, defense, regulating human osmotic pressure and acid-base balance.

Because blood is made up of plasma and blood cells, the main components of plasma are water, antibodies, and hormones, and it is light yellow in color. Blood cells include red blood cells, white blood cells, and platelets. The main color of red blood cells is red.

Junior high school biology should do such an experiment, after the blood is placed in the peace, there will be a stratification phenomenon, which is the stratification of blood cells and plasma, each layer presents a different color.

The main reason for hemoglobin blood redness Hemoglobin is composed of hemoglobin and four polypeptide chains, and after connecting the rocks and ferrous ions inside through weak bonds, the arterial blood is bright red because the hemoglobin molecule absorbs the short-wave light in the dark red blood of metabolism and diffuses carbon dioxide into the hemoglobin in the red blood cells. It accounts for about 25% to 30% and appears blue-purple due to the lack of oxygen in the blood to absorb longer wavelengths of light, so it appears dark red when mixed.

Blood is mainly made up of plasma (a yellow-brown liquid) and blood cells, which are made up of red blood cells, white blood cells, and platelets. The blood is red mainly because of the color of the red blood cells, which are red because of the presence of iron in the body. Only a small fraction of the iron in the human body is contained in muscles, liver, spleen, and other organs and tissues, and most of it is concentrated in hemoglobin, which is the red blood cells in the blood.

Iron-containing hemoglobin turns red blood cells. Red blood cells make up almost half of all blood, and a small drop of blood contains millions of red blood cells. It is because of the presence of so many red blood cells in the blood that the blood takes on a red color.

Hemoglobin is a porphyrin derivative with an iron ion embedded in the center via a coordination bond. At the right oxygen concentration, ferrous ions reversibly bind to an oxygen molecule with histidine residues, but do not change their valence. In particular, once one subunit of hemoglobin carries an oxygen molecule, it changes the entire configuration, making each of the other three molecules bind more easily than the previous one and release oxygen just as quickly.

We vertebrates thus acquire an efficient metabolism that allows us to move quickly and vigorously while maintaining our body shape.

Because the main component of blood cells is red blood cells, red blood cells contain hemoglobin, and hemoglobin contains trivalent iron ions, iron atoms, and the color of trivalent iron is red, so the red cells in blood cells are red blood cells, so blood is red.

This is because the most abundant blood in the human body is red blood cells, and red blood cells are made up of hemoglobin, which is blood red, so blood is also red.

It is because there is a protein in the blood, which is what we often call hemoglobin, and when hemoglobin encounters oxygen, it turns scarlet.

Because there is a heme compound in the hemoglobin of the blood, it is also because of this compound that the blood looks red.

This is because there is a lot of hemoglobin in the blood, so the color displayed is red.

Because there are red blood cells in the blood, red blood cells contain hemoglobin.

In the animal world, the color of blood is colorful, and red blood is just one of them. In addition to red blood, there are also blue blood, green blood, blue blood, rose red blood, light blue blood, and colorless blood.

Why is there so much blood of different colors in the animal kingdom? It turns out that the blood of any animal is composed of plasma and blood cells. The color of the blood is determined by the hemochromatin present in the plasma or blood cells.

Different hemochromatins are not the same in color. Copper-containing hemochromatin, called hemocyanin, makes blood blue or cyan; Vanadium-containing hemochromatin is called hemochlorvidin, which makes blood green; Iron-containing hemoglobin is called hemoglobin, which gives blood its red color.

In the blood of different animals, hemochromatin is also present in different ways. The hemochromatin of earthworms, mussels, spiders, etc., is dissolved in plasma; The hemoglobin of vertebrates is found in the red blood cells of blood cells. The main role of hemochromatin is to transport oxygen and a portion of carbon dioxide.

Hemocyanin and hemoerythin have a much inferior ability to deliver oxygen compared to hemoglobin.

The blood of insects does not contain hemochromatin, which is related to the fact that insects have a special respiratory system. They can get oxygen into the cells and carbon dioxide out of the body through microtrachea, unlike other animals, which must rely on blood circulation to complete the gas exchange, hemochromatin has no value, so the blood of insects is colorless.

The color of the blood of other animals containing different hemochromatins is different. Earthworm blood is rosy red. The blood of shrimp and river crab is pale cyan; The blood of horseshoe crabs is blue; The blood of the mussel is pale blue; The blood of the squid is green; Fish, amphibians, reptiles, birds, mammals, and even our human blood are all red.