Biology
Q. A certain disease affects 1 in every 200 people. If a random sample of 1000 people is taken, how many are expected to be affected? (2019)
Q. A certain disease has a 10% chance of being transmitted from an infected person to a healthy person. If there are 50 infected individuals, what is the expected number of transmissions if each interacts with one healthy person? (2023)
Q. A certain disease has a basic reproduction number (R0) of 3. If one infected person enters a population of 1000, how many people could potentially be infected after one generation? (2021)
Q. A certain disease has a mortality rate of 10%. If 500 people are infected, how many are expected to survive? (2019)
Q. A diet consists of 60% carbohydrates, 25% proteins, and 15% fats. If a person consumes 2000 calories, how many calories come from proteins? (2000)
Q. A meal contains 800 calories, with 40% from carbohydrates, 30% from proteins, and 30% from fats. How many calories are from carbohydrates?
Q. A person is on a diet that consists of 50% carbohydrates, 30% fats, and 20% proteins. If they consume 1800 calories, how many calories are from carbohydrates?
Q. A person needs 2000 calories a day and wants to get 15% of their calories from fats. How many grams of fat should they consume (1 gram of fat = 9 calories)? (2000)
Q. A snack contains 150 calories, with 10% from protein, 50% from carbohydrates, and 40% from fats. How many calories are from fats?
Q. A vaccine is 80% effective in preventing a disease. If 1000 people are vaccinated, how many are expected to still contract the disease? (2019)
Q. How many grams of protein are recommended daily for an average adult?
Q. If a certain disease affects 1 in every 1000 people, what is the expected number of cases in a population of 50,000? (2020)
Q. If a disease has a 15% prevalence in a population and a test has a 95% specificity, what is the probability of a false positive result? (2021)
Q. If a disease has a basic reproduction number (R0) of 2.5, how many people can one infected person potentially infect in 3 generations? (2023)
Q. If a disease has an incidence rate of 0.1% in a population of 1,000,000, how many new cases are expected in a year? (2022)
Q. If a disease spreads at a rate of 3% per week, what will be the total percentage of the population infected after 4 weeks, assuming no recovery? (2021)
Q. If a food item contains 10 grams of protein per serving and a person needs 60 grams of protein daily, how many servings must they consume?
Q. If a food label states that a serving contains 5 grams of sugar and the daily recommended intake is 25 grams, what percentage of the daily intake does one serving represent?
Q. If a person consumes 2500 calories a day and 30% of those calories come from fats, how many calories are derived from fats?
Q. If a person consumes 3000 calories a day and wants to ensure that 25% of their intake is from proteins, how many grams of protein should they consume (1 gram of protein = 4 calories)?
Q. If a person has a 20% chance of contracting a disease and a 30% chance of recovery, what is the probability that the person will contract the disease and not recover? (2022)
Q. If a person needs 2500 calories a day and wants to get 20% of their calories from fats, how many grams of fat should they consume (1 gram of fat = 9 calories)?
Q. If a test for a disease has a sensitivity of 90% and a specificity of 95%, what is the probability that a person who tests positive actually has the disease, given that the prevalence is 1%? (2022)
Q. If a vaccine reduces the risk of infection by 75%, what is the probability of infection after vaccination if the initial probability of infection is 0.2? (2020)
Q. If the average incubation period of a disease is 14 days, how many days will it take for 3 incubation periods to pass? (2020)
Q. If the mortality rate of a disease is 5% and 2000 people are diagnosed, how many deaths are expected? (2023)
Q. In a clinical trial, 60% of patients showed improvement after treatment. If 150 patients were treated, how many patients are expected to show improvement? (2022)
Q. In a population of 1000, if 50 people are infected with a disease, what is the prevalence rate of the disease? (2023)
Q. In a study, it was found that 70% of patients with a certain disease are male. If there are 400 patients, how many are expected to be male? (2020)
Q. What is the function of chlorophyll in plants? (2022)
