NEET (UG) Zoology Human Health and Disease Questions

Polymerase chain reaction (PCR) amplifies DNA following the equation:

Which of the following type of immunity is present at the time of birth and is a non-specific type of defence in the human body?

Why can't insulin be given orally to diabetic patients?

After maturation, in primary lymphoid organs, the lymphocytes migrate for interaction with antigens to secondary lymphoid organ(s)/tissue(s) like:
A. thymus
B. bone marrow
C. spleen
D. lymph nodes
E. Peyer's patches
Choose the correct answer from the options given below:

With the help of given pedigree, find out the probability for the birth of a child having no disease and being a carrier (has the disease mutation in one allele of the gene) in $F_3$ generation.

Identify the statement that is NOT correct regarding antibody structure.

Which are correct:
A. Computed tomography and magnetic resonance imaging detect cancers of internal organs.
B. Chemotherapeutics drugs are used to kill non-cancerous cells.
C. α-interferon activate the cancer patients' immune system and helps in destroying the tumour.
D. Chemotherapeutic drugs are biological response modifiers.
E. In the case of leukaemia blood cell counts are decreased.
Choose the correct answer from the options given below:

What is the pattern of inheritance for polygenic trait?

Match List - I with List - II.

List - I
A. Emphysema
B. Angina pectoris
C. Glomerulonephritis
D. Tetany

List - II
I. Rapid spasms in muscle due to low ${\text{Ca}}^{++}$ in body fluid
II. Damaged alveolar walls and decreased respiratory surface
III. Acute chest pain when not enough oxygen is reaching heart muscle
IV. Inflammation of glomeruli of kidney

Choose the correct answer from the options given below:

Given below are two statements:
Statement I: In the RNA world, RNA is considered the first genetic material evolved to carry out essential life processes. RNA acts as a genetic material and also as a catalyst for some important biochemical reactions in living systems. Being reactive, RNA is unstable.
Statement II: DNA evolved from RNA and is a more stable genetic material. Its double helical strands being complementary, resist changes by evolving repairing mechanism.
In the light of the above statements, choose the most appropriate answer from the options given below:

Streptokinase produced by bacterium Streptococcus is used for

Neoplastic characteristics of cells refer to:
A. A mass of proliferating cells
B. Rapid growth of cells
C. Invasion and damage to the surrounding tissue
D. Those confined to original location
Choose the correct answer from the options given below: