Answer:
English Translation:
V: Virus, is a very small organism, which does not have the capacity to reproduce itself. This particular virus reproduces only by invading human cells, it does not affect animals. HIV is a fragile virus that cannot survive outside the body.
I: Immunodeficiency, because the effect of this virus is to create a deficiency in the proper functioning of the body's immune system. It infects and destroys immune cells, called T4, to grow and reproduce. It causes the organism to be defenseless, this situation is used by various infections and cancers to attack the organism and cause its death. These diseases are called "opportunists," because they take advantage of the weakness of the immune system to attack. Over time the virus weakens the person's defenses against the disease, leaving him vulnerable to many infections and forms of cancer that would not develop in healthy people.
H: Human, because the virus can only be contracted by humans. In the animal kingdom there are viruses with similar characteristics in apes and felines. It is believed to come from a specific type of African monkey.
HIV belongs to retroviruses. HIV can only replicate inside the cells, ordering the reproduction to the machinery of the cell. It belongs to the family of retroviruses, which means that it is able to reverse the direction of the information that normally flows from DNA to RNA, but in this case it does it in the opposite direction thanks to the reverse transcriptase, thus introducing its genetic code and through the integrase it "integrates" the code of the infected CD4 cell, which allows it instead of multiplying, what it does is produce new viruses, called virions.
HIV is a lentivirus. HIV belongs to a subset of retroviruses called lentiviruses, or "slow" viruses. The course of infection by these viruses is characterized by a prolonged period between the initial infection and the appearance of severe symptoms. It is known that from the moment of the initial infection it reproduces constantly, mainly in the lymphatic system.
Typhoid fever is a bacterial infection that affects the intestine and occasionally the bloodstream. The germ that causes typhoid is a variety of salmonella, called Salmonella typhi. The disease can be contracted by anyone, but the greatest risk is that of people who visit countries where the disease is common.
roughen the skin
waterproof the skin
allow easier evaporation of sweat
loosen the skin
Capillary action pulls water into the root of a tree while the forces of cohesion and adhesion continually move the water up the tall tree.
Water is a polar molecule. Strong hydrogen bonds hold the water molecules together. This is a kind of dipole - dipole interaction and it accounts for the cohesive forces in water.
The forces of adhesion bind water to other surfaces. In the case of plants, the adhesive forces facilitates the interaction of water with the xylem cells.
Water enters into the roots of plants by capillary action. Capillary action alone is insufficient to move the water up the tree.
Hence, the forces of adhesion and cohesion, acting together can help water molecules to move up the top of a tall tree.
Learn more: brainly.com/question/1641876
Answer:
Explanation:
Picture a root like a straw.
The chesion between individual water molecules causes water to move together while The adhesion forces between the water molecules and the inner walls of the tree is stronger than gravity so this cause the water at the root to rise, this is called capillary action.
Both would be represented as completely shaded circles.
Both would be represented as completely shaded squares.
The older brother would be a shaded square, while the younger brother would be a half-shaded square.
Both would be represented as unshaded squares.
Answer:
The correct option is B) Both would be represented as completely shaded squares.
Explanation:
A pedigree can be described as a chart or a diagram which reflects the occurrence of a particular phenotype from one generation to another in a family. It determines the family history for a trait.
In a pedigree, males are usually drawn as squares. A male who is carrying a disorder or a particular phenotype under study is represented by shading the square. A male who is a carrier for the trait under study is represented by lines on the square. Hence, option B is correct.