Our much awaited video lectures of Matric Biology for Khyber Pakhtunkhwa Board are now available at our website www.sabaq.pk. Video lectures for both 9th and 10th grade have been prepared by mapping the exact textbooks of the KPK Board for 9th and 10th classes. The sequence of chapters for Biology 9th and 10th are as follows:
Smoking is a very harmful addiction that destroys a person’s life completely. It causes a whole lot of diseases. Lung cancer is the first and foremost of those. Smoking causes the cells of alveoli in our lungs to start dividing abnormally. This causes them to multiply in number and form a lump in our lungs.
Not only this, smoking affects all the body parts including the kidneys, mouth, oral cavity, bladder and even the larynx as well. Larynx basically cools, moistens the inhaled air along with removing the dust from it. Smoking inhibits the larynx from doing so. Hence a smoker’s larynx is unable to perform these functions.
Moreover, the kidneys get damaged as they filter the carcinogenic blood. Smoking also affects the oral cavity including the mouth, teeth, gums. Our teeth become yellowish due to smoking.
Smoking causes the carbon monoxide level in our blood to exceed thereby decreasing our haemoglobin level to decrease. Carbon monoxide increases the amount of platelets in our blood causing ‘arteriosclerosis’. Arteriosclerosis causes the arterial wall to get thick and less elastic. Additionally, smoking also causes ‘Pneumonia‘ and ‘Tuberculosis (TB)‘. Along with all of these diseases, smoking also affects a person’s social life as s/he slowly gets inflicted by diseases.
Another important point is that ‘passive smoking‘ harms the non smokers to a much greater extent. Inhaling the smoke of a smoker causes double damage to the passive smokers as the smoke goes in their lungs unfiltered. Thus, even the smokers’ family members are not safe from the dangers of smoking.
Hence, people must avoid this life threatening addiction as much as possible if they are to lead a healthy life. The World Health Organization (WHO) celebrates World No Tobacco Day on 31st May of every year to create awareness among people about the harmful effects caused by smoking.
The word malaria comes from an Italian word ‘mala’ meaning bad and ‘aria’ meaning air. Hence the word malaria means bad air. Malaria is spread through stagnant water where poisoned air is found. The breathing of that air causes malaria. This disease was discovered almost 2000 years ago by the physicians. They called it the disease of chills and fever. It was found that malaria was prevalent amongst people who live in ‘low marshy areas’.
Laveran was a French physician who won the Nobel Prize in Physiology or Medicine in 1907 for his discoveries of parasitic protozoans in blood that cause malaria. Laveran took the blood of some malarial patients and found tiny living organisms in their blood. Those tiny living organisms in their blood were ‘plasmodium’. People did not believe him at first. Several other scientists repeated the same experiment to confirm his findings. Their findings confirmed what Laveran had discovered.
They formed a hypothesis that plasmodium causes malaria. From this hypothesis they deduced that it was essential to find plasmodium in a malarial patient’s blood. Hence they conducted an experiment to confirm their hypothesis.
Two groups were taken for the experiment. Group 1 consisted of normal people that formed the control group. Group 2 consisted of malarial patients. Each group consisted of hundred people. blood samples of every person from each group were taken for examination.
It was found that all of the malarial patients from Group 2 had plasmodium in their blood. Whereas seven people from Group 1 also carried plasmodium in their blood whilst 93 were clear. It was found out upon further experimentation, that although those seven people from Group 1 carried plasmodium in their blood, that plasmodium was in its incubation period. Incubation is the period when the parasite enters the host body but remains dormant and inactive. Hence, this discovery confirmed that malaria was caused by the parasites known as a plasmodium.
Then the scientists went on to discover the causes of malaria. They discovered that Quinine was an effective drug for the treatment of malaria. Another surprising finding was that drinking of marshy water helped in avoiding malaria. Then, in 17th century it was discovered that Quina Quina barks could also be used for malaria’s treatment. Cinchona is another drug that can be used to cure malaria.
Excess intake of calcium, vitamin C & D,green vegetables, salts in the body
Viral/Bacterial infection in Urinary Tract
When any of the above-mentioned condition occurs, the urine of a person becomes very concentrated with the following chemicals:
Excess of these chemicals causes them chemicals to take the form of crystals in the kidneys and block the ureter and urinary bladder. This causes the urinary tract to be blocked. The patient experiences pain while urinating.
To the pleasure of all our students, Biology videos of 9th and 10th class for Federal Board have been added on our website. We will next be uploading Matric Biology videos for KPK Board.Those videos will be available till Monday 10 November 2014.
We had been receiving a lot of requests recently to add Biology videos on our website too. Finally the wait is over. Biology lectures for 9th and 10th grades for Punjab Board have been uploaded. The videos of Cambridge, Federal, Sindh, KPK & Balochistan Boards are on their way. Eventually videos solving past paper questions, problems (for both Cambridge and Pakistani Boards) will also be added to facilitate the students further.
A Video on Gaseous Exchange in Plants from Class 10th Biology
Uptil now videos on the following topics from class 9th Biology have been uploaded:
Introduction to Biology
Solving a biological problem
Cells and tissues
From Class 10th Biology book, the following chapters have been covered:
Coordination & control
Support & movement
Man & his environment
Our videos are meant to compliment the student’s learning from their school lectures. They help the students overcome any deficiency in their class lectures.We try to ensure that our videos explain the concepts clearly.
For this our Biology teachers use bright, colorful and legible fonts. All the diagrams used are clearly labelled. Complex terms are thoroughly explained so that the students can grasp them. Also the videos can be watched multiple times to learn the concepts by heart.