Secondary Response

Q. The first line of defense in the immune system is provided by

1. skin and mucous membrane
2. lymphocytes
3. the complement system
4. hormones and enzymes

Q. In which way has the study of biology helped us to control infectious diseases?

Q.

Regarding the assertion and reason, select the right option.

Assertion [A]: An individual suffering from chicken pox is usually not infected by the same virus for the second time in his/her life.

Reason [R]: Memory immune cells trigger immediate and complete secondary response during a second encounter.

1. Both A and R are true and R explains A

2. A is true and R is false

3. Both A and R are false

4. Both A and R are true R does not explain A

Q. The primary immune response is slow and creates memory of the pathogen in the immune system.

1. True
2. False

Q.

Regarding assertion and reason, select the right option

Assertion [A]: An individual cannot be infected by chicken pox for the second time in his/her life.

Reason [R]: Memory immune cells trigger immediate and complete secondary response during a second encounter.

1. Both A and R are true and R explains A

2. Both A and R are true R does not explain A

3. A is true and R is false

4. Both A and R are false

Q.

Why does our immune system save information about a infectious virus?

1. To transfer the information from human to off springs

2. To determine some characteristics of the virus

3. None of the above

4. To provide specific and intensified response for the second invasion of virus

Q. Our immune system stores information about pathogens to provide specific response if invaded by the same pathogen again.

1. True
2. False

Q.

Why does our immune system save information about an infectious virus?

1. To transfer the information from human to off springs

2. To determine some characteristics of the virus

3. None of the above

4. To provide specific and intensified response for the second invasion of virus

Q. Attack of which of the following disease gives life long immunity and patient recovers without having scars of the sores?

1. Mumps
2. Smallpox
3. Chicken pox
4. Trachoma

Q. Assertion :Vaccination is preferably given in childhood. Reason: Child's resistance to diseases is weak.

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

Q. Our immune system stores information about pathogens to provide specific response if invaded by the same pathogen again.

1. True
2. False

Q.

Why does our immune system save information about an infectious virus?

1. To transfer the information from parents to offsprings

2. To determine some characteristics of the virus

3. To provide specific and intensified response for the second invasion of the virus

4. None of the above

Q. The primary immune response is slow and creates memory of the pathogen in the immune system.

1. True
2. False

Q. Our immune system stores information about pathogens to provide specific response if invaded by the same pathogen again.

1. True
2. False

Q.

Why does our immune system save information about an infectious virus?

1. To transfer the information from parents to offsprings

2. To determine some characteristics of the virus

3. To provide specific and intensified response for the second invasion of the virus

4. None of the above