Problem 19 - A Complete Resource Book in Chemistry for JEE Main

Question

Which among the following is the correct statement? (a) antibiotics kill bacteria (b) analgesics relieve pain (c) antipyretics reduce body temperature (d) all

Step-by-Step Solution

Answer

(d) all

Step 1: Understand the Terms

To solve this question, we need to understand what each term represents: antibiotics, analgesics, and antipyretics. Antibiotics are substances that kill or inhibit the growth of bacteria. Analgesics are medications that relieve pain without causing loss of consciousness. Antipyretics are drugs that reduce fever, thereby reducing body temperature.

Step 2: Analyze Each Statement

Now we will analyze each option to see if it is correct: - Option (a) states that antibiotics kill bacteria. This is true as antibiotics are used to treat bacterial infections by either killing bacteria or preventing their growth. - Option (b) states that analgesics relieve pain. This is correct because analgesics are specifically designed to alleviate pain. - Option (c) states that antipyretics reduce body temperature. This is accurate since antipyretics lower fever, which consequently reduces body temperature.

Step 3: Evaluate the Final Option

Option (d) states 'all'. Since we have determined that all the individual statements (a), (b), and (c) are correct, option (d) is the correct choice, indicating that all these statements are true.

Key Concepts

Antibiotics

Antibiotics are crucial in modern medicine for combating bacterial infections. They work by either killing bacteria directly or inhibiting their ability to grow and multiply. This is why antibiotics do not work on viral infections such as the common cold or flu. Instead, they are prescribed for bacterial infections like strep throat, urinary tract infections, and certain types of pneumonia.
Types of antibiotics vary, each targeting different bacteria or bacterial mechanisms. For example:

• Penicillins disrupt the synthesis of the bacterial cell wall, leading to cell death.
• Tetracyclines inhibit protein synthesis, preventing bacteria from reproducing.
• Fluoroquinolones interfere with DNA synthesis.

It's important for patients to complete their prescribed antibiotic course, even if they feel better before finishing. Stopping treatment early can lead to antibiotic resistance, where bacteria evolve and become immune to the effects of medication.

Analgesics

Analgesics are drugs designed to relieve pain without causing loss of consciousness. They are among the most commonly used medications and are primarily categorized into two types: opioids and non-opioids. **Opioid Analgesics**:

• These include medications like morphine and oxycodone. They work by binding to opioid receptors in the brain, reducing the perception of pain.
• Although effective, they come with a risk of addiction if not used properly.

**Non-Opioid Analgesics**:

• Examples are aspirin and ibuprofen. These drugs reduce pain by inhibiting enzymes (like COX) in inflammatory pathways, which are responsible for creating pain signals.
• Non-opioids tend to be safer for long-term use compared to opioids.

Analgesics can be used for a variety of purposes, such as alleviating headaches, soothing muscle aches, and minimizing postoperative pain among others. They are pivotal in enhancing the quality of life for those suffering from chronic pain.

Antipyretics

Antipyretics are medicines used to reduce fever, thereby also contributing to lowering body temperature. Fever is often part of the body's natural defense mechanism against infections, but can cause discomfort and discomfort relief is sometimes necessary, making antipyretics valuable for patient care.
Some common antipyretics include:

• **Acetaminophen (Paracetamol)**: It's often recommended for both pain relief and fever reduction. It works in the brain to change the perception of pain and to regulate body temperature.
• **Ibuprofen**: While it is also a pain reliever, it has excellent fever-reducing properties, acting by decreasing inflammation that contributes to fever.

For the best results, it’s advisable to follow dosage guidelines precisely and consult with healthcare professionals, especially in children or individuals with pre-existing conditions. Proper use of antipyretics can effectively alleviate discomfort associated with fever without compromising health.