Biology questions about blood, high school biology blood type questions

No, no, no. The different types of blood were proposed in 1902 by Austrian pathologist and immunologist Carl Landsteiner (1868-1943). He had taken blood samples from himself and five colleagues and synthesized 30 samples for observation.

He found that some samples were mixed successfully, while others were condensed (stuck together). He then realized that not all samples were identical. In the samples of two people, the red blood cells had a substance called anti-gen (antigen), which he labeled with A. The samples of the other two had another antigen, which he labeled alphabetically with b; There was only one person's sample, which had neither a antigen nor a B antigen, but two antibodies in the serum, as well as his own blood, which he labeled with O (which means no antigen).

Later, he found that there was a group of people whose blood had both A and B antigens, and he called it AB type.

Since then, blood has been divided into type A, type B, type AB, and type O.

The chromosomes on the somatic cell are called homozygous if the alleles from both parents are the same (e.g., alleles A and A on some type A chromosomes): heterozygous if they contain different gene contents (e.g., the alleles on the chromosomes of type A people are A and O).

In other words, every individual, at a certain locus, has two and only two alleles, each from one parent. If the genes from both parents are identical, the individual is called homozygous, or heterozygous if they are not. Whether homozygous or heterozygous, the sum of genes on a pair of chromosomes is called the genetic formula.

For example, the genetic formula of the above two types of people is AA and AO respectively. However, not all inherited genes are expressed, and traits that can be expressed are called expressions. For example, regardless of whether the inheritance is AA and AO, its expression is A, which is what we usually call type A.

Visible blood type actually refers to the form in which it manifests. The reason why the expression of blood type and the genetic formula are different is that some genes, whether they are homozygous or heterozygous, the traits it controls can be expressed, this gene is called the dominant gene, if the trait controlled by this gene is only manifested when it is homozygous, and cannot be manifested when it is heterozygous, this gene is called recessive gene. In the ABO blood group system, genes A and B are dominant, while gene O is recessive.

For example, in a pair of chromosomes, one chromosome carries the A gene and the other carries the O gene, and the person is inherited with the formula Ao, but the expression is A, i.e., type A, not type O. Type O human body: This is the O gene on the upper body of two chromosomes.

By this reasoning, the genetic formula and manifestations of the ABO blood group system are as follows:

Table 1: ABO blood group and its corresponding genetic formula.

Blood type or phenotype Genetic formula or genotype.

a aa，ao

b bb，bo

o ooab ab

i.e. expressions a, b, o and ab; Genetic formulas AA, AO, BB, BO, OO and AB.

Blood type A: agglutina A, anti-B lectin Blood type B: Prolectin B, anti-A lectin Blood type AB: A and B agglutinin, no lectin Blood type O: no agglutinogen, anti-A and B lectins. This is to be memorized, is this understandable?

Anti-A lectins can specifically bind to anti-A lectinogens. Inactivates blood cells and maintains agglutination in the body, which is the displayed blood type.

What is the blood in, what is biochemistry and what is hidden in the blanks.

Hello, I'm glad to answer for you, ** in plasma, the height difference is biochemical in blood cells, hidden in blood vessels. Blood is a red, opaque, viscous fluid that flows through a person's blood vessels and heart. Blood is made up of plasma and blood cells, and I hope that the Mind Shout will help you.

With type A serology, the blood of B and C can be clotted, which means that the red blood cells of B and C contain type A antigen.

And B can only receive the blood of A, and A. Second. Third. Blood type D is different, so that correspondingly, A is blood type O, while B and C are blood type A.

Type AB, the specific conditions are not enough, while D is type B.

Hope it helps.

The ABO blood group gene is a codominant gene, which is controlled by the three alleles of A, B, and O, that is, the complex allele, and for each person, only two of the above three genes may appear on a pair of chromosomes.

If Xiao Ming's mother is O type, the genotype is OO, and the father is AB genotype, so Xiao Ming cannot be AB, that is, he is not the father's child.

But it doesn't have to be uncle's, because there is no condition to say that anyone other than a father is an uncle's.

This creature question is too boring.

How can type AB and type O get type AB.

The locus of the ABO blood group system is on chromosome 9. Human ABO blood group is controlled by three genes: A, B, and O, but there are only two ABO system genes on chromosome 9 in each human cell, that is, a pair of alleles in AO, AA, BO, BB, AB, OO, where A and B genes are dominant genes and O genes are recessive genes.

The blood type that may occur in a baby born later. Genetic patterns of blood type - Genetic patterns of blood groups: The blood type of the parents, the blood type of the child, and the blood type that the child will have.

o and o give birth to o; A and O give birth to A, O; A and A give birth to A, O; A and B give birth to A, B, AB, O; A and AB give birth to A, B, AB; b and o give birth to b, o; B and B give birth to B, O; B and ab give birth to A, B, AB; AB and O give birth to A, B; AB and AB give birth to A, B, AB;

Xiao Ming's father ab and Xiao Ming's mother o can only give birth to blood type A, blood type B iron buddy B and Xiao Ming's mother o can only give birth to blood type B, blood type O iron buddy B and Xiao Ming's father AB gave birth to blood type A, blood type B, blood type AB, please ask the iron buddy is difficult to be a woman, or Xiao Ming was picked up...

a.In addition to crystal osmotic pressure, there is also glue xun or body osmotic pressure.

c.The plasma egg is white, which mainly determines the colloidal penetration.

d.It is osmotic and brittle, and only dissolves in low concentration of salt solutions.

Long-term low temperature will make the sodium-potassium pump on the cell membrane unable to operate normally.

Function of sodium-potassium pump: make sodium ions out of the membrane, potassium ions into the membrane, and maintain the uneven distribution of high sodium in the membrane and the high sodium outside the membrane.

The sodium-potassium pump does not function properly, and the sodium ions in the plasma enter the cells, and the concentration of sodium ions in the plasma decreases.

In the same way, potassium ions can enter the plasma from the cells, causing potassium ions to rise in the plasma.

For details, please refer to the encyclopedia entry Sodium Digging Potassium Pump.

Personal thoughts, may not be right, for reference.

The thrombus travels through the inferior vena cava into the right atrium, then to the right ventricle, and through the pulmonary artery to the lungs.

So the choice is D!!

Blood is from the ventricle, through the systemic circulation and pulmonary circulation back to the atrium left ventricle pumped blood is arterial blood, through the body's large arteries to the trunk limbs of the small arteries a little by little, and finally into the capillaries, by the capillary wall and tissue for gas and nutrient exchange, take away waste, into venous blood, into venous blood, into the venule, and then into the upper and lower vena cava, and finally back to the right atrium - systemic circulation process.

The right atrium compresses, and venous blood enters the right ventricle.

Although it is pumped from the right ventricle, the arterial blood vessels in the pulmonary circulation are venous blood with low oxygen content and high carbon dioxide, which is exchanged through the alveolar capillaries and becomes arterial blood with high oxygen content, which is sent back to the left atrium - the pulmonary circulation by the venous vessels.

The exchange process of organic matter is roughly the same, which is digested and absorbed by the gastrointestinal tract and converted into substances such as blood sugar and amino acids, which are transported from the capillary wall into the blood circulation and flow through the whole body.

So choose D

Blood clots in the veins of the lower extremities pass through the veins of the lower extremities, flow to the inferior vena cava, and then enter the right atrium--- right ventricle--- pulmonary artery--- the capillary network of the lungs.

When it reaches the lungs, the blood clots stay in the lungs because the capillaries in the lungs are so thin that the blood clots can't pass through.

You need to be familiar with the pathways of systemic and pulmonary circulation to understand this topic.

D Explanation: The thrombus enters the right atrium through the inferior vena cava, then to the right ventricle, and through the pulmonary artery to the lungs.

The red color of the blood is mainly due to the presence of heme in the red blood cells. Heme is located in the lungs, where it absorbs oxygen and transports it to all tissues in the body. The heme that carries oxygen is bright red, and when the oxygen is delivered, it turns dark purple-red.

The blood vessels that look like green are actually dark purple-red veins, but when you look at them through the ** and the blood vessel wall, they look a bit like pale green.

Most of the blood vessels seen on the surface of the body are veins, and the veins look purple because they contain less oxygen, that is, there is less oxyhemoglobin in them. (Purple is mostly capillaries).

As for why you can see blood vessels in the palms of your hands... If it is not a disease, it should be that the blood vessels are abundant or close to the epidermis.

I can see a little bit of blood vessel ...... in the palm of my hand

Because you're seeing venous blood, which has a low oxygen content, the blood in the veins takes on that color. Generally, arteries are buried deeper than veins, so they are less likely to be seen, and they are bright red because they have a high oxygen content. I can see it in the palm of my hand if I look closely, and I can easily see it on the back of my hand, maybe the blood vessels are obvious.

If you are not sure, go to the hospital to check, but it should be fine.

Hope it helps.

The blood flowing in the veins is dark red, and this dark red is covered by a layer of yellow **, so it looks blue-green.

1.Blood passes through tissue cells, what decreases? Oxygen content.

2.Blood passes through the lungs, what decreases? Carbon dioxide content.

3.How many times does blood circulate through the heart once? 2 times.

4.What is the blood circulation, which carries oxygen? Erythrocyte.

5.The systemic circulation begins at ( ) ends at ( ) and the pulmonary circulation begins at ( ) and ends at ( ).

6.The heart is divided into four chambers.

Arterial to vein and vein to artery.

I think it's d's correct.

A is false, paraosmosis is wrong from the definition of arterial celestial blood.

B is false, the venous blood flowing through the small intestine has the most nutrients, C is wrong, the venous blood flowing from the kidneys has the least urea content.

D: Yes, after the blood flows through the glomeruli, many of the plasma components are filtered out to form the original urine. There is less plasma, and the red blood cells do not change.

a, after bone marrow transplantation, hematopoietic stem cells are transplanted, blood type may change, before transplantation, the patient's original stem cells will be removed, the patient's new blood cells after transplantation are produced by transplanted hematopoietic stem cells, the genotype must be different, but will not be passed on to the next generation, the germ cells are the leukemia patient's own.