CLASS 7 BIOLOGY Understanding Allergies, Allergens, and Reactions

What is the term for a substance that causes an allergic reaction?

Which of the following is a common airborne allergen?

Sneezing and a runny nose are typical symptoms of what condition?

What is the name of the test where small amounts of allergens are placed on scratches made on a person's arm?

Which of the following is a common symptom of food allergies?

Which cells in the body release histamine during an allergic reaction?

Which of the following is a common symptom of asthma?

What type of allergy is commonly experienced during the spring season?

What is the main effect of antihistamine drugs?

Which of the following is an example of a perennial allergy?

What is the first step in the mechanism of an allergic reaction after the first exposure to an allergen?

Which of the following is commonly associated with eczema?

What is another name for nettle rash?

What type of drug is salbutamol, commonly used by asthma sufferers?

What does the term 'sensitization' refer to in the context of allergies?

Which route allows allergens to enter the body, leading to food allergies?

Which of the following is a common source of allergens that can trigger asthma?

What is the primary cause of inflammation and increased mucus production in the nasal lining during hay fever?

What does a blood test for allergies measure?

What is the significance of histamine in allergic reactions?

In the context of allergic reactions, what role do antibodies play after the initial exposure to an allergen?

How does the mechanism of perennial allergies differ from that of seasonal allergies?

Why might a doctor recommend a blood test over a skin-prick test for allergy diagnosis in certain situations?

How do bronchodilators alleviate asthma symptoms?

What is the primary mechanism behind the development of allergic rhinitis following exposure to allergens?

Which statement accurately describes the role of heredity in the development of allergies?

How does sensitization contribute to the manifestation of an allergic reaction upon subsequent exposure to an allergen?

What is the underlying mechanism by which eczema can be triggered by sensitivity to certain cosmetics, clothing dyes, or detergents?

Why are antihistamines commonly prescribed for allergic reactions?

In what way does exposure to pollutants exacerbate allergic reactions, particularly during winter?

How does an early introduction of solid foods to infants potentially increase their risk of developing allergies?

What is the primary difference between the causes of nettle rash and eczema?

Why is it essential for individuals with asthma to manage their exposure to triggers such as dust, pollen, or animal dander?

How might consuming foods rich in antioxidants, zinc, and selenium during pregnancy help prevent allergies in children?

In the context of allergies, what does 'cross-reactivity' refer to?

Why do asthma sufferers often experience worsened symptoms during or after a cold or sore throat?

How does the use of strong sunlight allergy result in skin reactions?

What is the significance of measuring IgE antibody levels in a blood test for allergies?

In the context of asthma, what is the role of steroids in managing the condition?

How do 'injections of pollen or protein extracts' help some patients with hay fever?

In the context of allergic reactions, what differentiates the response in sensitized individuals compared to non-allergic individuals upon exposure to the same allergen?

How does the mechanism of action of bronchodilators such as salbutamol directly counteract the physiological changes occurring during an asthma attack?

What is the central immunological event that triggers the cascade of symptoms observed in allergic rhinitis (hay fever) following exposure to pollen?

How does the pathophysiology of exercise-induced asthma differ from that of allergic asthma?

Considering the complexity of allergic reactions, which statement best explains the role of genetic predisposition versus environmental factors in determining an individual's likelihood of developing allergies?

In allergic reactions, which aspect of histamine's mechanism contributes most significantly to the rapid development of localized swelling and redness, such as that seen in urticaria (hives)?

What is the key immunological process by which 'injections of pollen extracts or protein' alleviate hay fever symptoms in some patients?

Considering the varying presentations of eczema, what underlying mechanism best explains why certain cosmetics, clothing dyes, or detergents can trigger eczema in sensitive individuals?

Given that asthma attacks can be triggered by various factors, including allergens, irritants, and infections, what is the most critical aspect of managing asthma to minimize the frequency and severity of these attacks?

Considering the recommendations for pregnant women to consume foods rich in antioxidants, zinc, and selenium, what is the primary hypothesized mechanism by which these nutrients may contribute to preventing allergies in their children?

An allergy is an over-reaction of the immune system to a substance that is harmless to most people.

The substance causing an allergic reaction is called an antibody.

The word 'allergy' was first used by Clemens von Pirquet in 1906.

Heredity does not play a role in allergies.

Dust, mites and pollen grains are allergens.

Strong moonlight is a common allergen.

Abdominal pain, vomiting, diarrhoea, and itchy skin are symptoms of food allergy.

Allergens can only enter the body through the mouth.

Seasonal allergies occur throughout the year.

Pollen allergy is common during the spring time.

The process by which the body becomes sensitive or allergic to a particular substance is called immunization.

Histamine is an inflammatory substance released during an allergic reaction.

Antihistamine drugs can cure allergies.

Increased mucus production in the lungs is not a symptom of allergy.

Allergic rhinitis is caused by the contraction of large blood vessels in the nose.

Symptoms of asthma includes shortness of breath.

Hay fever is caused by pollen from hay fields only.

Eczema is always caused by a food allergy.

During a scratch test, if the skin around a certain scratch swells and becomes red this indicates that the patient is allergic to the substance contained in that particular scratch.

An allergy is an under-reaction of the immune system to a substance that is typically harmful to most people.

The term 'allergy' was first used by Robert Koch in 1802.

Heredity always guarantees that offspring will develop the same allergies as their parents.

Dust, pollen grains, and animal dander are all examples of airborne allergens.

Allergic reactions can only result from air-borne particles.

Allergies manifesting only during specific times of the year, like springtime, are classified as perennial allergies.

Exposure to sulphur dioxide and nitrogen trioxide during winter can trigger seasonal allergies.

Dust allergies and certain food allergies (like milk or egg allergies) are examples of perennial allergies.

During sensitization, the body becomes less sensitive to a particular substance after repeated exposure.

Histamine, released during an allergic reaction, is an anti-inflammatory substance.

Antihistamine drugs offer a permanent cure for allergies by eliminating the root cause of the allergic response.

Increased mucus production, shortness of breath, and skin rashes are all potential symptoms of an allergic reaction.

Allergic rhinitis occurs when histamine dilates small blood vessels in the nose, leading to reduced fluid escape and decreased mucus production.

Symptoms of asthma include abdominal pain and diarrhea.

Hay fever is caused by pollen from hay fields

Worry and mental stress can be responsible for eczema.

Urticaria, also known as hives, is an allergy that always lasts for several weeks before disappearing.

Salbutamol, a modified form of adrenaline, is a common bronchodilator used by asthma sufferers to relieve chest tightness.

During a scratch test, a doctor places large amounts of allergens directly into the bloodstream to observe any reactions.

Blood tests for allergies measure the concentration of specific IgE antibodies; higher levels indicate a greater likelihood of experiencing symptoms.

An allergy is an over-reaction of the ______ system to a substance that is harmless to others.

The substance that causes an allergic reaction is called an ______.

[Blank] are air-borne particles that can cause allergies.

Symptoms of food allergy can include abdominal pain, ______, and diarrhea.

[Blank] allergy is very common during spring time.

Allergies that persist throughout the year are known as ______ allergies.

The process by which the body becomes sensitive to a particular substance is called ______.

[Blank] is an inflammatory substance released during an allergic reaction.

Sneezing and irritation of the nose are common ______ of allergy.

A common symptom of allergy is itchy, red, and ______ eyes.

[Blank] is the name given to an allergy that many people develop, usually in early summer

[Blank] is a common skin complaint, and it causes itching.

Nettle rash is also known as ______ or Utricaria.

The Greek word ‘______’ means panting for breath.

[Blank] is a common bronchodilator, which is used to provide instant relief from chest tightness and wheezing.

An allergy in an individual could be identified by some ______ tests.

Doctors can identify the substances which cause allergies in particular individual by using the ______ test.

During a blood test, multiple ______ can be detected with a single blood sample.

Higher the IgE ______ value, the greater is the likelihood of symptoms.

After birth, an early introduction of ______ food increases a child’s risk for allergies.

An allergy is an ______ of the immune system to a substance that is harmless to most other people.

The substance that triggers an allergic reaction is known as an ______.

The word 'allergy' was first used by ______ in 1906.

[Blank] are air-borne particles that can cause allergic reactions.

Allergies can result from foods, insect bites, and reactions to medicines like aspirin and ______.

Symptoms of food allergy may include abdominal pain, vomiting, diarrhoea, and ______.

In case of pollen allergy, it is very common during ______ when the new bloom (flowers) appear on the trees and the pollens are spread through air.

[Blank] allergies persist throughout the year.

The process by which the body becomes sensitive or allergic to a particular substance is called ______.

The binding of allergen to antibody results in the release of an inflammatory substance called ______.

[Blank] drugs can prevent allergic reactions though they cannot cure the allergy.

Persons suffering from asthma show symptoms such as coughing, shortness of breath (breathlessness) and ______.

The ______ gets inflammed due to the exposure of pollens which results in increased mucus production, leading to runny nose, sneezing, watery and itchy eyes in hay fever.

[Blank] is a common skin complaint that causes itching and can be triggered by worry, mental stress or sensitivity to particular substances.

Nettle rash, also known as hives or ______, is an allergy that often appears quickly as red swollen bumps or patches on the skin.

Asthmatics have oversensitive cells in their ______.

[Blank] give instant relief from chest tightness and wheezing in asthma sufferers.

Doctors can identify the substances which cause allergies in a particular individual by using the ______.

A blood test for allergy measures the concentration of specific ______ antibodies in the blood.

A high intake of antioxidants, zinc, and ______ during pregnancy may help prevent allergies in the child.

What term describes a substance that causes an allergic reaction?

Name one airborne particle that is a common allergen.

Give an example of a food that can commonly cause allergies.

What is one way allergens can enter the body?

What is an allergy that occurs more frequently during spring called?

What is the name for allergies that persist throughout the year?

What chemical is released in the body during an allergic reaction?

Name one common symptom of an allergy.

What is Hay Fever?

What is the name of the allergy that looks like red bumps or patches on the skin?

What is the name of the allergy characterized by panting for breath?

Name one type of drug that Asthma suffers take.

Name one way to diagnose allergies.

What is sensitization in the context of allergic reactions?

Give one example of a precaution that a pregnant woman can take to prevent allergies.

Briefly explain the role of histamine in an allergic reaction and how antihistamine drugs counteract this process.

Describe how a scratch test is performed to diagnose allergies, and what a positive result indicates.

Differentiate between seasonal and perennial allergies, providing an example of each.

Explain the concept of sensitization in the context of allergic reactions.

List three common symptoms of asthma and describe what occurs in the air tubes during an asthmatic attack.

Identify two entry routes of allergens into the body and give an example of an allergy associated with each route.

How do bronchodilators provide relief to asthma sufferers?

Describe the purpose of the blood test in allergy diagnosis and what its results indicate.

What are common symptoms of food allergies?

Explain why hay fever was initially thought to be caused by pollen from hay fields and why this is now known to be inaccurate.

What is eczema, and what are some substances that might cause it?

Describe what occurs during an allergic reaction in the nasal passages of someone sensitive to allergens, leading to allergic rhinitis.

Besides pollen, list three other common airborne allergens.

Explain why an early introduction of solid food to babies after birth may increase the risk for developing allergies.

Briefly define what an allergy is, in your own words. What is the substance that causes an allergy called?

Explain the process of sensitization in the context of an allergic reaction, detailing the roles of allergens, antibodies, and white blood cells.

Contrast seasonal and perennial allergies, providing specific examples of allergens and conditions associated with each type.

Describe how histamine contributes to the symptoms of allergic rhinitis, and explain the mechanism by which antihistamines alleviate these symptoms.

Explain why asthma attacks involve both inflammation and bronchospasm, detailing the roles of different allergens and irritants in triggering these responses.

Differentiate between the mechanisms and effects of bronchodilators and steroids in the treatment of asthma, noting when each type of drug is most appropriate.

Describe the procedure of a scratch test (skin-prick test) for allergy diagnosis, explaining how the results are interpreted to identify specific allergens.

Explain the role of IgE antibodies in blood tests for allergy diagnosis, and describe how the concentration of these antibodies correlates with the likelihood of experiencing allergic symptoms.

Discuss the potential impact of a pregnant woman's diet on the development of allergies in her child, specifically mentioning foods or nutrients that may increase or decrease the risk.

Evaluate the statement: 'There is no permanent cure for allergy,' and explain the strategies that can be employed to relieve symptoms and manage allergic conditions.

Explain why some individuals develop allergies while others do not, and discuss the role of heredity and environmental factors in determining an individual's susceptibility to allergies.

Explain how the mechanism of an allergic reaction leads to the release of histamine and subsequent symptoms, detailing the roles of antibodies and white blood cells.

Compare and contrast seasonal and perennial allergies, providing specific examples of allergens and conditions associated with each type.

Describe in detail how a scratch test is performed to diagnose allergies, including what a positive result indicates and its limitations.

Explain what happens in the nasal passages of both allergic and non-allergic individuals when exposed to foreign particles, and detail the specific chain reaction that occurs in allergic individuals leading to allergic rhinitis.

Discuss the dual approach to treating asthma, explaining the distinct roles of bronchodilators and steroids in managing the condition.