Bacteria Video Lecture | Science & Technology for State PSC Exams - BPSC (Bihar)
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FAQs on Bacteria Video Lecture - Science & Technology for State PSC Exams - BPSC (Bihar)
| 1. What are bacteria? |  |
Ans. Bacteria are single-celled microorganisms that can be found almost everywhere on Earth. They are prokaryotes, which means they lack a nucleus and other membrane-bound organelles. Bacteria come in various shapes and sizes and can be both beneficial and harmful to humans and other organisms.
| 2. How do bacteria reproduce? | |
Ans. Bacteria reproduce through a process called binary fission. In this process, a single bacterial cell divides into two identical daughter cells. The parent cell replicates its DNA, elongates, and then splits into two separate cells. This rapid reproduction allows bacteria to multiply and colonize new environments quickly.
| 3. Can bacteria cause diseases in humans? | |
Ans. Yes, certain bacteria can cause diseases in humans. These pathogenic bacteria have the ability to invade and colonize our body tissues, leading to infections. Examples of bacterial diseases include tuberculosis, pneumonia, urinary tract infections, and food poisoning. However, it's important to note that not all bacteria are harmful, and many play crucial roles in maintaining our health.
| 4. How do antibiotics work against bacteria? | |
Ans. Antibiotics are medications that help fight bacterial infections. They work by targeting specific components or processes within the bacteria, such as their cell wall or protein synthesis machinery. Antibiotics either kill the bacteria (bactericidal) or inhibit their growth (bacteriostatic), allowing our immune system to eliminate the infection more effectively.
| 5. Can bacteria develop resistance to antibiotics? | |
Ans. Yes, bacteria can develop resistance to antibiotics through a process called antibiotic resistance. Over time, bacteria can undergo genetic mutations or acquire resistance genes from other bacteria, allowing them to survive and multiply even in the presence of antibiotics. This has become a significant concern in healthcare, as antibiotic-resistant bacteria make infections more difficult to treat. Proper antibiotic stewardship and responsible use of antibiotics are crucial to minimize the development of resistance.
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