Download App

Human Health and Disease — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYHuman Health and Disease3 Marks
Question
When someone buys packets of cigarettes, cannot miss the statutory warning that is present on the packing which warns against smoking and says how it is injurious to health. Yet, smoking is very prevalent in our society, both among young and old. Advise the adolescents about the importance of avoiding smoking. (Mention any six points.)
✓

Answer

  1. Tobacco in cigarettes contains a large number of chemical substances including nicotine, an alkaloid. Nicotine stimulates adrenal gland to release adrenaline and nor-adrenaline into blood circulation, both of which raise blood pressure and increase heart rate.
  2. Smoking is associated with increased incidence of cancers of lung, urinary bladder, throat and oral cavity.
  3. It is responsible for bronchitis and emphysema.
  4. It is associated with increased risk of coronary heart disease, gastric ulcer, etc.
  5. Smoking increases carbon monoxide (CO) content in blood and reduces the concentration of haem-bound oxygen. This causes oxygen deficiency in the body.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the following questions in detail." from Human Health and Disease→Human Health and Disease — all question types→BIOLOGY STD 12 Science question papers→Maharashtra Board STD 12 Science question papers→Maharashtra Board question paper generator→

Similar questions

Prior to a sports event blood & urine samples of sportspersons are collected for drug tests.
  1. Why is there a need to conduct such tests?
  2. Name the drugs the authorities usually look for.
  3. Write the generic names of two plants from which these drugs are obtained.
→
During extraction of a tooth, the dentist gives an injection of Anaesthesia to the patient before extraction. Is the action potential generated? How does the local anaesthesia work? What is the effect of pain killer on the nervous system?
→
On a visit to a Hill station, one of your friend suddenly become unwell and felt uneasy.
  1. List two symptoms you would look for to term it to be due to allergy.
  2. Explain the response of the body to an allergen.
  3. Name two drugs that can be recommended for immediate relief.
→
$\text{ABA}$ is described as an antitranspirant.
→
Since October 02, 2014 'Swachh Bharat Abhiyan' has been launched in our country.
  1. Write your views on this initiative giving justification.
  2. As a biologist name two problems that you may face while implementing the programme in your locality.
  3. Suggest two remedial methods to overcome these problems.
→
Where is the pituitary gland located? Enlist the hormones secreted by anterior pituitary.
→
A farmer while working on his farm was bitten by a poisonous snake. The workers in the farm immediately rushed him to the nearby health centre. The doctor right away gave him an injection to save his life. What did the doctor inject and why? Explain.
→
How degeneracy of the code is explained by Wobble hypothesis?
→
Identify A, B, C and D in the given diagram.Image
→
Explain the various steps involved in the production of artificial insulin.
→