STD 11 - 18. Neural control and coordination — NEET STD 11 Science — Question

Immunoglobulins are made up of

Select correct statements :
(i) Benign tumours normally remain confined to their original location and do not spread to other parts of the body and cause little damage.
(ii) The malignant tumours are a mass of proliferating cells called neoplastic or tumour cells.
(iii) Tumours cells grow very rapidly, invading and damaging the surrounding normal tissues as it starve the normal cells by competing for vital nutrients.
(iv) Metastasis property is found in benign tumours.
(v) lonising radiations like X-rays and gamma rays and non-ionizing radiations like UV cause DNA damage leading to neoplastic transformation.
(vi) Cancer causing viruses called oncogenic viruses have genes called viral oncogenes.
(vii) Antibodies against cancer specific antigens are also used for detection of certain cancers.

Triploblastic, organ system grade body, coelomate and unsegmented animals are of

Which of the following cells can release heparin and histamine in the blood?

Assertion: Artificially acquired passive immunity results when antibodies or lymphocytes produced outside the host are introduced into a host.

Reason: A bone marrow transplant given to a patient with genetic immunodeficiency is an example of artificially acquired passive immunity.

Roquefort cheese is formed by ripening with the fungi

Joint of wrist is of

The neuroendocrine structure is

An enzyme catalysing the removal of nucleotides from DNA is: