Innate Immunity

Q. Which of the following is a physiological barrier in innate immunity

1. Skin
2. Stomach acid
3. Mucus on respiratory tract
4. Saliva

Q. Which of the following is/are special cell(s) or the cellular barrier(s) of our innate immune system?

1. Neutrophils
2. Macrophages
3. Red blood cells
4. Natural killer cells

Q. What is diapedesis?

1. Process of coming out of WBC through the capillary wall to fight against foreign micro-organism
2. The process of filtration of urea in kidney
3. A kind of amoeboid movement
4. A type of locomotion found in hydra

Q.

Which of the following statements are true for innate immunity?

1. RNA polymerase

2. DNA ligase

3. DNA polymerase

4. Reverse transcriptase

Q. Assertion: Histamine is related with inflammatory and allergic reactions.
Reason: Histamine is a vasodialator.

1. Both the reason and assertion are true but the reason is not the correct explanation for the assertion
2. Both assertion and reason are true and the reason is the correct explanation for the assertion.
3. Assertion is true but reason is false
4. Both the reason and assertion are false

Q. Assertion: IgM is a type of immunoglobulin which cannot cross the placenta.

Reason: IgM is pentamer immunoglobulin, joined by J-chain.

1. Both assertion and reason are true and reason is the correct explanation of assertion
2. Both assertion and reason are true but reason is not the correct explanation of assertion
3. Assertion is true but reason is false
4. Both assertion and reason are false

Q. Breast-feeding is recommended by doctors for bringing up a healthy baby. Justify. [2]

Q.

Which fruit is best for pregnancy?

Q. Antigen presenting cells are also known as

1. Macrophages
2. Langerhans cell
3. Dendritic Cell
4. All of the above

Q. Amoebiasis infections causes amoebic dysentery or amoebic colitis , which symptoms are seen in an individual ❓

Q. Innate immunity is provided by

1. Antibody
2. Neutrophils
3. B-cells
4. T-cells

Q.

If a person shows production of interferon in his body, the chances are that he has got an infection of

1. tetanus

2. malaria

3. typhoid

4. measles

Q. Name any two types of cells which act as 'cellular barriers' to provide innate immunity in humans.

Q. In some autoimmune diseases, capillaries may become damaged resulting in high levels of albumin, proteins and blood cells appearing in the urine. Which region of the nephron contains capillaries that, when damaged, could cause this appearance in urine?

1. Renal corpuscle
2. Proximal convoluted tubule
3. Nephron loop
4. Distal tubule

Q. How many statements given below are the examples of "Naturally Acquired Passive Immunity".
A. In case of snake bites, the injection which is given to the patients, contain preformed antibodies against the snake venom.
B. The fetus recieves some antibodies from their mother through the placenta during pregnancy
C. Colostrum secreted by mother during the initial day of lactation has abundant antibodies to protect the infant.
D. 'ATS' (Anti-tetanus serum) provides temporary protection in case of injuries and burns

1. One
2. Two
3. Three
4. Four

Q.

Fill in the blanks.
​ immunity can provide immediate relief by direct introduction of the antibodies into the body.​

Q. What are enveloped viruses?

Q. Artificially acquired passive immunity refers to immunity from:

Q. Column I lists the components of body defence and column II lists the corresponding descriptions. Match the two columns. Choose the correct option from those given.

Column I		Column II
A. Active natural immunity B. First line of defence C. Passive natural immunity D. Second line of defence		1. Injection of gamma globulins 2. Inflammation and phagocytosis 3. Direct contact with the pathogens that have entered inside 4. Surface barriers 5. Antibodies transferred through the placenta

1. A – 2, B – 3, C – 1, D - 4
2. A – 3, B – 4, C – 5, D – 2
3. A – 4, B – 2, C – 5, D – 1
4. A – 1, B – 5, C – 4, D – 3

Q. Which of the following is/are special cell(s) or the cellular barrier(s) of our innate immune system?

1. Neutrophils
2. Macrophages
3. Red blood cells
4. Natural killer cells

Q. Which of the following is an example of active acquired immunity?

1. Person recovered from measles does not get measles again
2. Nursing mother transfers some antibodies to infant through colostrum (breast milk)
3. Injection of anti tetanus is given after injury
4. We do not suffer from distemper, a fatal canine disease

Q. The immunity with which an individual is born is known as

1. Acquired
2. Adaptive
3. None of the above
4. Innate

Q. What is immunity? Explain the innate immunity with four types of barriers to defend the body from development of disease.

Q. Life of the memory cells of immune system is

1. A few days
2. A few weeks
3. A few hours
4. A few months to whole life

Q. What is innate immunity? List the four type of barriers which protect the body from the entry of the foreign agent.

Q. Immunity obtained by the transfer of antibodies from the mother through the placenta by the foetus is

1. Naturally acquired passive immunity
2. Artificially acquired active immunity
3. Naturally active active immunity
4. Artificially acquired passive immunity

Q. What is acquired immunity?

Q. Artificially acquired passive immunity refers to immunity from:

1. Intravenous(IV) injection of immunoglobulins
2. Injection of the antigens as a vaccine
3. Transfer of antibodies from mother to foetus across the placenta
4. Recognition of an antigen by T cells

Q. Which of the following characters justify the living nature of viruses?

1. Capability of capsid synthesis
2. Mutability
3. Multiplicity
4. All of the above

Q. Assertion :PCR technique is helpful in detecting bacteria and viral disease even when symptoms of the disease are not yet visible. Reason: Very low concentrations of bacteria or viruses in human body can be detected by amplification of their nucleic acids using the PCR technique.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect