Sunday, 7 July 2019

10th Class Biology Chapter 1 Gaseous Exchange Notes

10th Class Biology Chapter 1 Gaseous Exchange Notes
10th Class Biology Chapter 1 Gaseous Exchange Notes


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Q. No.1 Define cellular respiration.
 CELLULAR RESPIRATION
 The process in which the carbon-hydrogen bonds in the food are broken by oxidation reduction reactions and the energy is transformed into ATP is called cellular respiration.
 Q. No.2 What is aerobic respiration?
 AEROBIC RESPIRATION
 The process of respiration in which oxygen is used and there is complete oxidation of the food material producing carbon dioxide and water is called aerobic respiration
 Q. No.3 In what form energy is available to organisms?
 ENERGY AVAILABILITY TO ORGANISMS
 The energy is available to organisms in the form of ATP (Adenosine Triphosphate) for their activities
 Q. No. 4 Define gaseous exchange
 GASEOUS EXCHANGE
 The process of taking in of oxygen and giving out of carbon dioxide is termed as gaseous exchange.
 Q.No. 5 Define breathing.
 BREATHING
 The process through which animals take air in their bodies to get oxygen from it and then give out the air for getting rid of carbon dioxide is called breathing Q.No.6 What is the difference between respiration and breathing?
 DIFFERENCE BETWEEN RESPIRATION AND BREATHING
 The respiration involves the mechanical and the biochemical processes whereas breathing is only the mechanical or physical process of exchange of gases.
 Q. No. 7 How speech is produced?
 PRODUCTION OF SPEECH
 The vibrations in vocal cords and the movements of lips, cheeks, tongue and jaws produce specific sounds which result in speech.
 Speech is an ability that only humans are gifted with and this is one of the characteristics which has put human beings superior to all
 Q. No. 8 What is the function of the mucus secreted by the epithelial cells of trachea and bronchi?
 FUNCTION OF MUCUS
 The glandular cells of trachea and bronchi secrete mucus which moistens the air and trap any fine particles of dust or bacteria that have escaped from the nasal cavity Q. No. What is the function of cilia present in trachea and bronchi?
 FUNCTION OF CILIA
 The cilia present in trachea and bronchi beat with an upward motion so that the foreign particles along the mucus are sent to the oral cavity from where it may be either swallowed or coughed out
 Q. No. 10 Explain whether breathing movements are involuntary or voluntary BREATHING MOVEMENTS
 The breathing movements are involuntary to a large extent. However, we can control the rate of breathing but not for a long time
 Q. No. 11 Why the percentage of respiratory disorders is higher in Pakistan?
 RESPIRATORY DISORDERS IN PAKISTAN
 The percentage of respiratory disorders is higher in Pakistan because of the more concentration of air pollutants not only in the urban but also in rural atmosphere.
 Q. No. 12 What was the death rate of pneumonia before the discovery of antibiotics?
 DEATH RATE OF PNEUMONIA
 Prior to the discovery of antibiotics, one-third of pneumonia patients died from the infection
 Q. No. 13 What is the death rate of lung cancer?
 DEATH RATE OF LUNG CANCER
 Lung cancer is the most common cause of cancer-related deaths It is responsible for more than 1,3 million deaths world wide annually O No. 14 What will happen to lungs, if a person stops smoking?
 DISCONTINUATION OF SMOKING
 If a person stops smoking, the chance to develop cancer decreases as damage to the lungs is repaired and contaminant particles are gradually removed.
 0. No. 15 What is nicotinic? What are its bad effects?
 NICOTINE
 Nicotine is a powerful poison and was widely used as an insecticide in the past Bad Effects
 When inhaled through tobacco smoking. it reaches our circulatory system and not crul ardens the walls of the arteries but also Limages the brain tissuesQ.No. 16 What are the observations about rates of smoking by WHO?
 RATES OF SMOKING BY WHO
 According to the WHO. the rates of smoking have declined in the developed world. In the developing world, it is rising by per year as of 2002 Q.No. 17 When World No Tobacco Day is celebrated?
 WORLD NO TOBACCO DAY
 The World No Tobacco Day is celebrated on 31 of May every year Q.No. 18 What is the percentage of passive smokers to develop heart diseases and lung cancer?
 PASSIVE SMOKERS
 Non-smokers who are exposed to second hand smoke (passive smoke) at home or work increase their heart disease risk by 25-30% and their lung cancer risk by 20-30% Q. No. 19 How does smoking affect the social life of a person?
 EFFECT OF SMOKING ON SOCIAL LIFE
 Smoking affects the social fitness of a because other people may not want to be expos Smokers may face social unacceptable to others smoke.

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  1. I ASO HAVE SOME IMPORTANT QUESTIONS OF BIO AND CHEM OF KPK BORD

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  2. plz tell some important short or long for chapter 10 of biology 10

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