NEET MCQs Practice on Human Health and Disease Class-XII Biology, Free unlimited practice on Human Health and Disease Class-XII Biology Mcqs

Question 71 of 446

📘 CLASS XII

The widely used diagnostic test for AIDS is:

A widely used diagnostic test for AIDS is enzyme linked immuno-sorbent assay (ELISA).

Question 72 of 446

📘 CLASS XII

Treatment of AIDS with anti-retroviral drugs is only partially effective because:

Treatment with anti-retroviral drugs is only partially effective; they can only prolong the life of the patient but cannot prevent death.

Question 73 of 446

📘 CLASS XII

Which organization in India works extensively to educate people about AIDS?

The National AIDS Control Organisation (NACO) and other NGOs are doing a lot to educate people about AIDS.

Question 74 of 446

📘 CLASS XII

Which action is crucial in preventing the spread of HIV infection through medical procedures?

Ensuring the use of only disposable needles and syringes in public and private hospitals is a step taken to prevent HIV spread.

Question 75 of 446

📘 CLASS XII

In cancer, the breakdown of regulatory mechanisms results in the loss of which property shown by normal cells?

Normal cells show contact inhibition; cancer cells have lost this property, leading to uncontrolled growth.

Question 76 of 446

📘 CLASS XII

Tumors that normally remain confined to their original location and do not spread are classified as:

Benign tumors normally remain confined to their original location and do not spread.

Question 77 of 446

📘 CLASS XII

The most feared property of malignant tumors, where cells sloughed from tumors reach distant sites through blood and start a new tumor, is called:

The property of cancer cells spreading to distant sites is called metastasis.

Question 78 of 446

📘 CLASS XII

Agents that induce the transformation of normal cells into cancerous cells are called:

Agents (physical, chemical, or biological) that induce transformation are called carcinogens.

Question 79 of 446

📘 CLASS XII

Which type of radiation causes DNA damage leading to neoplastic transformation?

Ionising radiations like X-rays and gamma rays and non-ionizing radiations like UV cause DNA damage leading to neoplastic transformation.

Question 80 of 446

📘 CLASS XII

Cancer-causing viruses are called oncogenic viruses and possess genes known as:

Cancer causing viruses called oncogenic viruses have genes called viral oncogenes.

Human Health and Disease MCQs