G. Answer the following questions in brief.
1. Why should we always wash our hands before and after eating?
2. What are the major groups of microorganisms?
3. Why is nitrogen important for living organisms?
4. Which microbe causes cholera in humans? What can we do to prevent it?
Answers
Answer:
1. We should wash our hand before and after eating to prevent infection. If we eat without washing our hands germs in our hand can be transferred to the inside of our mouth which can cause illness.
2. There are five major groups of microorganism: Bacteria, fungi, virus, protists and archaea.
3. It is used to make amino acids in our body which in turn make proteins. It is also needed to make nucleic acids, which form DNA and RNA.
4. It is caused by eating food or drinking water contaminated with a bacterium called Vibrio cholerae
Avoid tap water, water fountains and ice cubes. This precaution applies to water you drink and water you use to wash dishes, prepare food and brush your teeth. Don't eat raw or undercooked seafood. Drink water only if it's bottled, canned, boiled or treated with certain chemicals.
Answer:
1. Washing your hands before eating a meal is a simple and effective method of infection prevention. When you eat without washing your hands, the bacteria and germs that are left on your fingers and palms can be transferred to the inside of your mouth. This can cause illnesses and infections.
2. Viruses, Bacteria, Archaea, Fungi, and Protists.
3.Nitrogen is a crucially important component for all life. It is an important part of many cells and processes such as amino acids, proteins and even our DNA. It is also needed to make chlorophyll in plants, which is used in photosynthesis to make their food.
4.Vaxchora is recommended to prevent infection in adults who are 18 – 64 years old and are traveling to an area of active cholera transmission with toxigenic Vibrio cholerae O1 (the bacteria strain that most commonly causes cholera).