Q1.
Anaphase is the fastest stage of mitosis and the one that uses the most energy. This is because the sister chromatids that were earlier aligned during metaphase are now propelled to opposite poles by the contractile fibers. The cell is also elongated by spindle fiber.
Q2.
Lactobacillus Acidophilus is the most beneficial microbe. They produce lactic acid in the intestines where they reside. This helps in the breakdown of food, and it inhibits the production of harmful bacteria. Lactobacillus and other bacteria in their family also produce hydrogen peroxide which makes it unsuitable for unhealthy bacteria.
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Q3.
Staphylococcus aureusis is the most harmful microbe to humans. It spreads very easily and fast, and it manifests in different types of diseases with varying levels of gravity. It develops resistance to antibiotics very fast, and this presents a challenge during treatment.
Q4.
Cancer-causing viruses constitute a significant problem because they cause a rapid spread of cancer. This makes it difficult to destroy the cancerous cells because they multiply and do read the body faster. Cancer caused by viruses is not localized like other types, so it becomes difficult to use methods such as radiation and chemotherapy.
Q5.
The most dangerous type of mutation is the insertion. This type of mutation changes the sequence of the reading frame. The additional of the wrong protein base changes the length of the amino acids, and if the crude protein is formed, an organism may die.
Q6.
The most dangerous type of radiation depends on the state in which it occurs and the situation. Exposure to all three kinds is potentially hazardous if the exposure occurs under the right conditions.
Q7.
Processed meats are the most dangerous type of carcinogen. This is because they are ingested directly into the body, and the chemicals they contain can slowly accumulate in the body.
