What is cancer? Describe the causes and treatment of cancer in detail.
Show Hint
Cancer is caused by genetic and environmental factors; treatments include surgery, radiation, chemotherapy, and immunotherapy.
Solution and Explanation
Cancer is a group of diseases characterized by uncontrolled cell growth and division, leading to the formation of tumors that can invade surrounding tissues and spread to other parts of the body.
Causes of Cancer:
- Genetic Factors: Inherited mutations in specific genes.
- Carcinogens: Exposure to tobacco smoke, radiation, and harmful chemicals.
- Viral Infections: Certain viruses such as HPV and Hepatitis B can trigger cancer.
- Lifestyle Factors: Poor diet, lack of physical activity, and excessive alcohol consumption.
Treatment of Cancer:
- Surgery: Physical removal of the tumor.
- Radiation Therapy: Using high-energy rays to destroy cancer cells.
- Chemotherapy: Use of drugs to kill or slow the growth of cancer cells.
- Immunotherapy: Boosting the body's immune system to fight cancer.
Top Questions on Human health and disease
- What is antitoxin?
- UP Board XII - 2025
- Biology
- Human health and disease
Read the following passage and answer the questions that follow. Prevention is the frontline response to drug use. Effective interventions address the underlying conditions contributing to drug use, such as a lack of connection to family or community, instability, insecurity, trauma, mental health issues, etc. When addressed, these factors can effectively prevent the initiation of drug use and the progression to drug use disorders. Study the few key figures of drug use given below and answer the questions that follow.
(a) What do you infer from the figures in Table No. 1 about the people with drug use disorders, 2022 (in million)? State any two of your observations.
(b) How are Hepatitis C and HIV related to drug use disorders by people, as shown in Table No. 2? State the correlation between the two.
(c)
- [(i)] Give the scientific name of (p) shown in Table No. 1.
OR - [(ii)] Give the scientific name of (q) shown in Table No. 1.
- CBSE CLASS XII - 2025
- Biology
- Human health and disease
- [(i)] Give the scientific name of (p) shown in Table No. 1.
- Explain unique features of acquired immunity.
- Maharashtra Class XII - 2025
- Biology
- Human health and disease
- Which of the following is caused by unsterilized needle?
- Maharashtra Class XII - 2025
- Biology
- Human health and disease
- In the life cycle of a {Plasmodium, once the sporozoite enters the blood of the host, it invades the hepatic portal system, resulting in occurrence of change in the host body, leading to malaria
A. Sporozoite enters the hepatocytes and divides by schizogony leading to formation of cryptomerozoites
B. Inside RBCs, the micro-metacryptozoites become rounded and modify into a young trophozoites.
C. As the trophozoite grows in size, a central vacuole is developed so that the nucleus is pushed to one side into the peripheral cytoplasm, leading to amoeboid stage.
D. In Amoeboid stage the small red eosinophils granules appear in the cytoplasm of the host corpulses as Schuffner's granules}
Choose the most appropriate answer from the options given below:- CUET (PG) - 2025
- Zoology
- Human health and disease
Questions Asked in UP Board XII exam
- What are different means of production and the rewards given to them?
- UP Board XII - 2025
- Economics
- What is UNESCO ? Write its full form.
- UP Board XII - 2025
- United Nations and its Organisations
- Write the products of the following reactions:
\includegraphics[width=0.5\linewidth]{image5.png}- UP Board XII - 2025
- Organic Reactions
- Hydrogen atom of chloroform is acidic in nature.
- UP Board XII - 2025
- Chemistry of organic compounds
- Write an article on any one of the following topics in about 100-150 words:
a.Means of Recreation in Modern Times- UP Board XII - 2025
- Article Writing