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Answer:
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Explanation:
1 ans: It is difficult to make antiviral medicines than making antibiotics because viruses have few biochemical mechanisms of their own. They enter the host cells and use their machinery for their life processes. So, antiviral medicines will work against the host body. Antibiotics block bacterial synthesis pathways without affecting the body because bacteria use its own metabolic pathway machinery so, it will not affect the host body.
2 ans: Mosquitoes cause more human suffering than any other organism. Mosquito acts as a vector for the bacteria and viruses, responsible for the diseases such as malaria, dengue, encephalitis and yellow fever etc. When mosquito bites a human it causes severe skin irritation through an allergic reaction to the mosquito's saliva, this is what causes the red bump and itching.
3 ans: A bacteria called Helicobacter pylori (H. pylori) can cause peptic ulcers -- and as many as half of us carry it. Most people infected with H. pylori do not get ulcers, but in others, it can raise the amount of acid, break down the protective mucus layer, and irritate the digestive tract.
4 ans: A balanced diet is essential to keep the body healthy. We need carbohydrates, protein, fats, dairy and a small amount of sugar in our diets to do this, it helps us to gain the vitamins and minerals. If the body is lacking in these health conditions can appear, we will be more susceptible to illness and may well be over or under weight. We can’t grow and protect our bodies without all of the components of a balanced diet
5 ans: Our immune system is the most important line of defence against various disease-causing microorganisms. It is programmed to identify and protect us from various types of threats. Many symptoms that we actually associate with the disease are the work of the immune system to wash out the germs from the body. The immune system sets out to destroy the microorganisms by triggering inflammation, mucous, sneezing, coughing and runny nose.
Answer:
1.
Making anti-viral drugs is more difficult than making anti-bacterial medicines because viruses have very few biochemical mechanisms of their own. They make use of host machinery which replicates. So it is very much difficult to find the targets where these drugs get interfered by not making any harm to the host. Thus, it is not easy to design an antiviral drug with high safety and effectiveness.
2.Various diseases like dengue, Zika, Chikungunya, West Nile fever, or malaria, caused by mosquitoes. Hence, they are infectious pathogens and parasites and transmit various infections. Therefore, mosquitoes are called disease vectors.
-To transmit a disease mosquitoes bite a sick person first then infecting itself with the pathogen. Usually, after 10 days mosquitoes become infectious and help in transmitting the disease to other persons.
-Not every mosquito can transmit pathogens, the specific type of mosquito that can transmit only specific infections like female anopheles mosquitoes transmit malaria pathogen, Aedes aegypti mosquito transmit dengue virus, etc.
-Also their specialization in a different host helps a mosquito species to transmit disease like yellow fever mosquitoes, Aedes aegypti especially specialized in humans and their surroundings.