As an Amazon Associate I earn from qualifying purchases.

What is Allergy in Biology? PDF | Download eBooks

Learn Allergy definition in biology with explanation to study “What is Allergy”. Study allergy explanation with biology terms to review biology course for online degree programs.

Allergy Definition

  • Allergies are exaggerated (hypersensitive) responses to certain antigens called allergens.

    Campbell Biology by J.B. Reece, L.A. Urry, M.L. Cain, S.A. Wasserman, P.V. Minorsky, R.B. Jackson



Allergy Explanation

Allergies, also known as allergic diseases, are a number of conditions caused by hypersensitivity of the immune system to typically harmless substances in the environment. These diseases include hay fever or food allergies etc. Symptoms may include red eyes, an itchy rash, sneezing, a runny nose, shortness of breath, or swelling. Food intolerances and food poisoning are separate conditions. Food, insect stings, and medications are common causes of allergic reactions

Keep Learning Biology Explanations

What is Transpiration?

Transpiration is the process in which plants release the water which is present inside the plant, in the form of ...

What is Radiometric dating?

Radiometric dating is a technique used to date materials such as rocks or carbon, in which trace radioactive impurities were ...

What is Reading frame?

A reading frame is a way of dividing the sequence of nucleotides in a nucleic acid molecule into a set ...

What is High density lipoprotein?

High-density lipoprotein is one of the five major groups of lipoproteins. They are typically composed of 80-100 proteins per particle ...

What are Homeotic genes?

Homeotic genes are genes which regulate the development of anatomical structures in various organisms such as echinoderms, insects, mammals, and ...

What is Secondary growth?

Secondary growth is the growth that results from cell division in the cambia or lateral meristems and that causes the ...