Question
Why is smoking a bad habit?

Answer

  1. Smoking involves inhaling the cigarette smoke which contains nicotine and other toxic substances like N-nitrosodimethlene. There is some amount of carbon monoxide.
    All these substances affect the normal respiratory health.
  2. Smoking invites problems like asthma, hypertension, heart disease, stroke, lung damage.
  3. The worst impact is that these substances are carcinogenic and hence can cause cancer of larynx, trachea, lung, etc.
  4. Smoking not only affects the smokers but also has bad effect on others due to passive smokers.
  5. In women, smoking is still hazardous as their ovaries can undergo mutations due to mutagenic chemicals found in smoke.
  6. Therefore, smoking is a very bad habit.

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

Similar questions

Answer the following questions:
Write the characteristic features of anther, pollen and stigma of wind pollinated flowers.
  1. ‘‘India has greater ecosystem diversity than Norway.’’ Do you agree with the statement? Give reasons in support of your answer.
  2. Write the difference between genetic biodiversity and species biodiversity that exists at all the levels of biological organisation.
What are 'biofertilizers? Explain them with suitable examples.
Rajesh was doing gel electrophoresis to purify DNA fragments. Given below is the sketch of the observations of the experiment performed by him.
  1. At which end he would have loaded the samples and where?
  2. Analyse the reason for different positions taken up by the DNA bands.
  3. Elaborate the step he would have followed to visualize DNA bands.
  1. In pBR322, foreign DNA has to be introduced in tetR region. From the restriction enzymes given below, which one should be used and why?
PvuI, EcoRI, BamHI
  1. Give reasons, why the other two enzymes cannot be used.
Enlist the probable causes of infertility.
If implementation of better techniques and new strategies are required to provide more efficient care and assistance to people, then why is there a statutory ban on amniocentesis? Write the use of this technique and give reason to justify.
Sketch and label Seminiferous tubules as seen in T.S. of testis.
Explain the role of regulatory gene in lac operon. Why is the regulation of the operon called negative regulation?
In an aquarium two herbivorous species of fish are living together and feeding on phytoplanktons. As per the Gause’s Principle, one of the species is to be eliminated in due course of time, but both are surviving well in the aquarium. Give possible reasons.