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Sloan [31]
3 years ago
6

Explain the process by which an attack of hay fever follows exposure to pollen

Biology
1 answer:
Bezzdna [24]3 years ago
4 0

<span>Hay fever is a manifestation of allergic reaction from pollen, which is prevalent during haying season. Hay fever is commonly known as allergic rhinitis caused by an oversensitive immune system, particularly the lymphocytes, leading to a misdirected immune response. The body undergo a sensitization when one develops IgE antibodies and develop a strong TH2 response against pollen. Then, this newly develop IgE antibodies sticks to basophils and mast cells with no signs and symptoms yet. However, when one is expose again to pollens, mast cells will be activated and release mediators who are responsible for immediate vascular and smooth muscle reaction. After this, local clinical manifestation of hay fever will be observed. </span>

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Which statement best describes the relationship between organism X and organism Yin each interaction?
juin [17]

Answer: 1) Organism X is positively affected by the relationship and organism Y is negatively affected

Explanation: the predator eats the prey, so the predator benefits but the prey is killed. parasites are heterotrophic organisms that live on or in another living thing and do harm to it while they themselves benefit. <3

3 0
4 years ago
Definicion del concepto de vida saludable
valkas [14]

Answer:

"Vivir saludablemente" para la mayoría de las personas significa que tanto la salud física como la mental están en equilibrio o funcionan bien juntas en una persona. En muchos casos, la salud física y mental están estrechamente relacionadas, de modo que un cambio (bueno o malo) en una afecta directamente a la otra.

Explanation:

4 0
4 years ago
The monomers of nucleotides are?
DerKrebs [107]

Answer:

Nucleotides are organic molecules consisting of a nucleoside and a phosphate. They serve as monomeric units of the nucleic acid polymers deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), both of which are essential biomolecules within all life-forms on Earth.

Explanation:

3 0
3 years ago
Trade winds blow from the horse latitudes toward the______.
zimovet [89]

Answer:

The correct answer is - the equator.

Explanation:

The trade winds are the kind of wind that blows towards the equator from the southeast in the southern hemisphere or the northeast in the northern hemisphere, especially at sea.

The horse latitudes are present in both the northern hemisphere and southern hemisphere with calm air and occur between trade winds and the westerlies that move towards the equator.

5 0
3 years ago
Explain why the ratio of motor neurons to muscle fibers is greater in muscles that control eye movement than in postural muscles
EleoNora [17]

Answer:

The muscles of the eye cover a greater number and in turn carry out greater fine motor skills.

Explanation:

Alpha motor neurons are neurons that invent the skeletal muscle, that is, striated, so that through the motor plate that is the unit that unites them, an action potential is transmitted that contracts the sarcomeros of the elastic fibers and the z lines. come closer, each eye movement is much more precise than the locomotion of the lower limb, which carries greater innervation in each muscle bundle due to the specificity of the movement, this is how more alpha motor neurons are required to mobilize the eye than a leg.

7 0
3 years ago
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