Which of the following statements is not correct?

Opioid is a medicine used to help patients to cope with mental illnesses.

Acquired immunity is pathogen specific.

Macrophages can phagocytose and destroy microbes.

Hallucinogenic chemicals obtained from leaves, resins and inflorescence of plant Cannabis sativa are called as cannabinoids.

EASY

NEET

IMPORTANT

Earn 100

The antibody which can cross placental barrier is

33.33% studentsanswered this correctly

Important Questions on Human Health and Disease

EASY

NEET

IMPORTANT

MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 31 - Human Health and Disease>MCQS CORNER>Q 49

The most abundant class of immunoglobulins (lgs) in the body is

EASY

NEET

IMPORTANT

MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 31 - Human Health and Disease>MCQS CORNER>Q 50

A protein or polysaccharide molecule that stimulates antibody formation:

EASY

NEET

IMPORTANT

MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 31 - Human Health and Disease>MCQS CORNER>Q 51

Following are the differences between innate immunity and acquired immunity.

	Innate immunity	Acquired immunity
(i)	It is inherited by an organism from the parents and protects it from birth throughout life.	It is acquired by an organism after birth.
(ii)	It is also called as specific immunity.	It is also called as non-specific immunity.
(iii)	It consists of different types of barriers that prevent the entry of foreign agents.	It consists of specialised cells ( $T$ -cells and $B$ -cells) and antibodies that circulate in the body fluid.

Select the option with correct pair of differences,

MEDIUM

NEET

IMPORTANT

MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 31 - Human Health and Disease>MCQS CORNER>Q 52

Select the correct statements regarding the characteristics of acquired immunity.
(i) Cell-mediated immunity is responsible for acquired immunity.
(ii) It produces a primary response of low intensity.
(iii) Active and passive immunity are types of acquired immunity.
(iv) Polymorphonuclear leucocytes and natural killer cells are involved in acquired immunity.

EASY

NEET

IMPORTANT

MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 31 - Human Health and Disease>MCQS CORNER>Q 53

Read the given statements carefully.
(i) Innate immunity is a specific type of defence, that is present at the time of birth.
(ii) Malignant malaria is caused by

P l a s m o d i u m f a l c i p a r u m

.
(iii) Malaria could be confirmed by Widal test.
(iv) Active immunity is slow and takes time to give its full effective response.
(v) Saliva in the mouth acts as physiological barrier for pathogens.
Which of the above statements are correct?

EASY

NEET

IMPORTANT

MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 31 - Human Health and Disease>MCQS CORNER>Q 54

Passive immunity can be conferred directly by

EASY

NEET

IMPORTANT

MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 31 - Human Health and Disease>MCQS CORNER>Q 55

Which one of the following immune system components does not correctly match with its respective role?

EASY

NEET

IMPORTANT

MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 31 - Human Health and Disease>MCQS CORNER>Q 56

Which form of pathogen is used in vaccination?

The antibody which can cross placental barrier is

Important Questions on Human Health and Disease

Learn and Prepare for any exam you want !