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dangina [55]
3 years ago
6

Explain the antigen-antibody response as it relates to blood groups

Biology
1 answer:
Arisa [49]3 years ago
4 0
Antigens are surface proteins found on all cells including blood cells. In the case of blood groups, an individual's blood type reflects the presence or absence of specific antigens. An antigen-antibody response is initiated if the individual receives a transfusion of blood containing antigens that it identifies as being "foreign." Antibodies found in a person's blood bind to the foreign antigen, causing agglutination, or clumping. The antigen-antibody complexes clog the small blood vessels, and the foreign RBCs are lysed, releasing hemoglobin into the bloodstream. The most serious complication of a transfusion reaction is kidney failure due to blockage of the kidney tubules by the hemoglobin molecules.
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____________________ can replace a gene in an animal’s genome. a. Recombinant DNA c. A genetic marker b. Messenger RNA d. A plas
Otrada [13]

Answer:

Recombinant DNA can replace a gene in an animal’s genome.

Explanation:

The molecular cloning process involves in creating Recombinant DNA. This DNA is used to replace or replicate any specific gene. This is done by the process of PCR to replicate it directly.

This formation is done in the presence of a vector. This method is used in the field of veterinary office, pharmacy and many more.  It has the ability to replace the gene of an animal’s genome.

7 0
3 years ago
Which organisms develop gills from pharyngeal arches and later develop lungs to breathe on land? Frog Scallop Salamander Scorpio
Sladkaya [172]

Answer:

frog

Explanation:

frogs live their first part of their lives in water so they need gills but after metamorphosis they live on land so they need lungs.

5 0
3 years ago
Read 2 more answers
Explain the respiratory system of a frog and the importance of "vacularization" of the skin and the mesentery
fredd [130]

 The skin is composed of thin membranous tissue that is quite permeable to water and contains a large network of blood vessels. The thin membranous skin is allows the respiratory gases to readily diffuse directly down their gradients between the blood vessels and the surroundings. When the frog is out of the water, mucus glands in the skin keep the frog moist, which helps absorb dissolved oxygen from the air.

A frog may also breathe much like a human, by taking air in through their nostrils and down into their lungs. The mechanism of taking air into the lungs is however sligthly different than in humans. Frogs do not have ribs nor a diaphragm, which in humans helps serve in expand the chest and thereby decreasing the pressure in the lungs allowing outside air to flow in.

In order to draw air into its mouth the frog lowers the floor of its mouth, which causes the throat to expand. Then the nostrils open allowing air to enter the enlarged mouth. The nostrils then close and the air in the mouth is forced into the lungs by contraction of the floor of the mouth. To elimate the carbon dioxide in the lungs the floor of the mouth moves down, drawing the air out of the lungs and into the mouth. Finally the nostrils are opened and the floor of the mouth moved up pushing the air out of the nostrils.

Frogs also have a respiratory surface on the lining of their mouth on which gas exchange takes place readily. While at rest, this process is their predominate form of breathing, only fills the lungs occasionally. This is because the lungs, which only adults have, are poorly developed.


6 0
3 years ago
If you have the genotype Ww, where W represents purple flowers and w represents white flowers, which one is the dominant trait?
Shtirlitz [24]

If you have the genotype Ww, where W represents purple flowers and w represents white flowers, which one is the dominant trait?

Answer:

I think purple flowers.

7 0
2 years ago
The type of reproduction that is most often used by multicellular organisms is.
Nezavi [6.7K]

Meiosis is involved in the formation of the gametes of multicellular organisms.

<h3>How do multicellular organisms reproduce?</h3>

Both plants and animals reproduce by developing new individuals, through gametes or reproductive cells.

<h3>Characteristics of multicellular organisms reproduction</h3>

  • Many multicellular organisms always arise from a single cell called a zygote, the result of the union of two gametes (female and male).

  • The zygote subdivides rapidly throughout gestation, forming the entire body of the creature that, from its birth, begins to grow.

Therefore, multicellular organisms reproduce by means of certain types of reproductive cells that are generated and take care of building a complete new individual.

Learn more about multicellular organisms reproduction here: brainly.com/question/220315

5 0
2 years ago
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