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Sloan [31]
2 years ago
6

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

Biology
1 answer:
Bezzdna [24]2 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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My is the bass
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Answer: Relevance

The scope of abiotic and biotic factors spans across the entire biosphere, or global sum

of all ecosystems. Such factors can have relevance for an individual within a species,

its community or an entire population. For instance, disease is a biotic factor affecting

the survival of an individual and its community. Temperature is an abiotic factor with the

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Some factors have greater relevance for an entire ecosystem. Abiotic and biotic factors

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living and nonliving things considered as a unit. In this case, abiotic factors span as far

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Influencing Factors

Abiotic factors affect the ability of organisms to survive and reproduce. Abiotic limiting

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Explanation:

5 0
3 years ago
Read 2 more answers
5. In four o'clock, red color exhibits incomplete dominance over white; when both exist together, the flowers are pink. i. In a
Anvisha [2.4K]

Answer:

The genotype of the offspring would be heterogeneous.

Explanation:

In four O'clock plants in case of incomplete dominance,  no colour is dominant. They are existing in an intermediate character / a new character. This new colour is pink, not white or red.

The white and red colour flowers are wild type and homogenous type. When the cross occurs and incomplete dominance happen, the F1 flower would be pink one but heterogeneous.

Because according to Mendel's deviation, there are such character appears where neither dominant nor the recessive are the only expressive traits. This has seen in incomplete dominance.

In codominance, which is the another Mendelian deviation, where both the characters has expressed. For example the rose flower having both red and white dots in it. The expression two colours / dominant and recessive characters in the flower is called codominance. Because both expresses at the same time. This codominance genotype is also heterogeneous.

6 0
3 years ago
20 POINTS!!!
LUCKY_DIMON [66]

DNA is that chemical used by the cell to multiply and function . It works like a code for all functions.

4 0
3 years ago
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What is the name given to the original cell before it divides?
Marizza181 [45]
<h3><u>Answer;</u></h3>

Parent cell (mother cell)

<h3><u>Explanation;</u></h3>
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