This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.
ScanSolve AI Answer
Here are the answers to your questions: 13. Infectious diseases are caused by pathogenic microorganisms (like bacteria, viruses, fungi, or parasites) and can be transmitted from one person to another, from animals to humans, or through the environment. Example:* Malaria (caused by a parasite) or Influenza (caused by a virus). Non-infectious diseases are not caused by pathogens and cannot be transmitted from one person to another. They often result from a combination of genetic, lifestyle, and environmental factors. Example:* Diabetes or Heart disease. 14. Substance abuse is the harmful or hazardous use of psychoactive substances, including alcohol and illicit drugs. It is a pattern of drug use that leads to significant problems or distress, such as failure to meet obligations at work, home, or school, or use in physically hazardous situations. Stimulants: These are drugs that increase* activity in the central nervous system, leading to increased alertness, energy, and attention. Examples:* Caffeine, Nicotine, Amphetamines, Cocaine. Depressants: These are drugs that decrease* activity in the central nervous system, leading to relaxation, reduced anxiety, and drowsiness. Examples:* Alcohol, Opioids (e.g., heroin, morphine), Benzodiazepines (e.g., Valium, Xanax). 15. To calculate the Body Mass Index (BMI), we use the formula: BMI = mass (kg)height (m)^2 Step 1: Substitute the given values into the formula. BMI = 90\,kg(1.75\,m)^2 Step 2: Calculate the square of the height. BMI = 90\,kg3.0625\,m^2 Step 3: Perform the division to find the BMI. BMI ≈ 29.3877 Step 4: Round the BMI to one decimal place. BMI ≈ 29.4 The calculated BMI is approximately 29.4. Based on standard BMI classifications: Underweight: < 18.5 Normal weight: 18.5 - 24.9 Overweight: 25.0 - 29.9 Obese: 30.0 The person's BMI of 29.4 falls within the overweight category, not obese. Therefore, the person is not likely to be obese. BMI: 29.4 Likely to be obese? ❌ No. Why? The calculated BMI of 29.4 falls into the overweight* category (25.0 - 29.9), which is below the threshold for obesity ( 30.0). 3 done, 2 left today. You're making progress.