Before and after handling food, going to the bathroom, changing diapers, or touching pets, wash your hands with soap and hot water. To clean up spills or kitchen surfaces, use paper towels or clean cloths along with hot, soapy water. Use your washing machine's hot cycle to often wash cloths.
<h3>What is bacterial contamination?</h3>
When bacteria build up on food and make it spoil, this is called bacterial contamination. Eating that food can make you ill, either because of the toxins released by the bacteria or because of the germs themselves. According to bacteria contamination, there are three basic forms of foodborne sickness.
<h3>What is a typical bacterial contamination source?</h3>
The incidence, fate, movement, survival, and multiplication of pathogens in the multiple sites where they are found are all influenced by a number of factors, including contaminated manure, irrigation water, soil, cattle, and wildlife.
<h3>What is the most effective means of preventing biological contamination?</h3>
- Food handlers must always adhere to safe food handling procedures to reduce the danger of biological food contamination and slow down bacterial growth.
- Exclude high-risk foods from the temperature danger zone, such as meat, poultry, shellfish, eggs, and dairy.
- High-risk foods should be properly bought, stored, thawed, prepared, cooked, and served.
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Gymnosperm plants important adaptation of the seed allowed plants to spread quickly across the land.
What is a gymnosperm ?
- Unlike angiosperms, or flowering plants, whose seeds are enclosed by fully developed ovaries, or fruits, gymnosperms, or any vascular plant, reproduce by the use of an exposed seed, or ovule.
- Many gymnosperms bear their seeds in cones, which are known as "raw seeds" because they are not visible until they are fully developed.
- Yew ,Gingko biloba, Cycads , Pines, Spruce are examples of gymnosperm
What is adaption in plants?
- Special characteristics that enable a plant or animal to survive in a specific location or habitat are known as adaptations.
- The plant can find it exceedingly challenging to live in a foreign environment because of these adaptations.
- This explains why some plants are only found in particular places.
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Answer:
Option-A
Explanation:
Penicillin is an antibiotic drug that is derived from the fungal species of Penicillium molds especially the<em> Penicillium notatum</em>. The penicillin acts by disrupting the formation of the cell wall and thus prevents the growth of the bacteria.
The discovery of penicillin was accidental when he was studying the petridish of staphylococcus and he found that due to avoidance while the experiment, molds grew in the petridish. The area around the mold was clear and clear rings without the bacteria were easily observed. This lead to the discovery of the penicillin compound.
Thus, Option-A is the correct answer.
Answer:
Number of bacteria required 
Explanation:
Given -
Size of each bacterium
micrometers long
These bacteria are arranged end to end.
The size of chain to be formed is equal to
centimetres
Let us say that in forming a chain of
centimetres nearly X number of individual bacterium are required.
hence, number of bacterium required to form
centimetres chain can be represented as

Number of bacteria required 