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vova2212 [387]
3 years ago
15

PLEASE HELP I feel like the answer is number 4 but im not sure.

Biology
1 answer:
dimulka [17.4K]3 years ago
6 0
I think it is also 4
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En los alérgicos, a partir del segundo contacto con el alérgeno cuando se produce la reacción alérgica. ¿Cómo podrías explicarlo
dem82 [27]

Answer:

La segunda exposición desencadena la fase de 'respuesta' asociada a la reacción alérgica  

Explanation:

La alergia se puede considerar como una respuesta desmedida del sistema inmune cuando un individuo entra en contacto con ciertas sustancias que son inocuas para la mayoría de la población, pero que en personas alérgicas desencadenan fuertes reacciones de hipersensibilidad. La alergia tiene dos fases conocidas como fase de sensibilización y fase de respuesta. La primera fase de sensibilización es donde el individuo entra en contacto con los 'antígenos' del alérgeno, lo cual provoca que el individuo genere anticuerpos IgE los cuales combaten al alérgeno (el sistema inmune considera que esta sustancia es potencialmente dañina), mediante la generación de anticuerpos de IgE que se unen a receptores de células del sistema inmune (eosinófilos, basófilos y mastocitos). La segunda fase de respuesta se produce cuando el individuo entra de nuevo en contacto con el alérgeno. Durante el segundo contacto, los antígenos del alérgeno interactúan con anticuerpos específicos de IgE que se encuentran sobre la superficie de células del sistema inmune, desencadenando la degranulación de estas células (mastocitos) y la consecuente liberación de mediadores químicos de la alergia tales como, por ejemplo, histamina, los cuales son responsable de los síntomas típicos de la alergia (tos, estornudos, picor, enrojecimiento de ojos, urticaria, inflamación, etc.).

4 0
2 years ago
Which one(s) contribute the most to the mass of a plant? I. Soil II. Carbon III.Water A) I only B) II only C) I and III only D)
allochka39001 [22]
<span>D) II and III only is what i would put</span>
5 0
3 years ago
Read 2 more answers
Which of the following accurately pairs the phase of the cell cycle with its primary purpose? A. S phase–DNA replication B. G2 p
GenaCL600 [577]

The correct answer is option A, S Phase - DNA Replication

The DNA replication begin at the S phase of the cell cycle. In this phase, the cell grows and prepare itself for the DNA replication while the other components such as centro some undergo replication. The S phase occurs during the inter phase and the genetic material duplicates itself before entering the mitosis and meiosis cell division in the next stage.  

3 0
3 years ago
Where are you likely to see connotation used?
4vir4ik [10]
You are likely to see a connotation used in both advertisement and also some university lectures. If only one answer is permitted, B is the best answer. 
6 0
3 years ago
Which of these is the primary site of protein synthesis? mitochondria cytoplasm nucleus ribosomes
Murrr4er [49]

Answer:

A. Ribosome

Explanation:

Ribosome is a sub cellular structure, that is involved in protein synthesis.

Mitochondria is a sub cellular structure, where cellular respiration takes place, therefore it is called the energy house of the cell.

Cytoplasm is a jelly like structure in which sub cellular structures are found.

Nucleus is the main part of the cell in which all cellular activity is controlled by.

It contains DNA and RNA.

Nucleus is mostly known for it's thread like structure that contains hereditary information which is passed from parents to offspring.

Hope it helps ;) ❤❤❤

9 0
3 years ago
Read 2 more answers
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