Nutrition and Laboratory Safety Quiz
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Questions and Answers

What is the primary function of carbohydrates in the diet?

  • Vital for healthy bones
  • Provides a lot of energy (correct)
  • Helps food pass through the digestive system
  • Provides materials to repair tissues

    • Which food group is vital for making new cells and repairing damaged tissues?

  • Lipids
  • Vitamins
  • Proteins (correct)
  • Fibre

    • What is the primary role of enzymes in the digestive process?

  • To improve the taste of food
  • To mechanically break down food
  • To chemically break down food molecules (correct)
  • To store nutrients for later use

    • What is the main role of water in the digestive system?

    <p>Facilitates chemical reactions in cells</p> Signup and view all the answers

    Which enzyme is responsible for breaking down starch?

    <p>Amylase</p> Signup and view all the answers

    Which of the following food groups is primarily supplied by fruit and vegetables?

    <p>Fibre</p> Signup and view all the answers

    Which component of the body is responsible for moving food with enzymes and acids?

    <p>Small intestine</p> Signup and view all the answers

    What is a key function of vitamins in the human body?

    <p>Supporting connective tissue health</p> Signup and view all the answers

    What is the end result of chemical digestion?

    <p>Small, soluble food molecules</p> Signup and view all the answers

    Which enzyme would be most effective in breaking down fats?

    <p>Lipase</p> Signup and view all the answers

    What is one important safety practice to follow in the laboratory?

    <p>Wear protective goggles.</p> Signup and view all the answers

    Which of the following is NOT a piece of laboratory apparatus?

    <p>Electric mixer</p> Signup and view all the answers

    What should you avoid doing during a practical lab session?

    <p>Mucking around</p> Signup and view all the answers

    Which safety measure involves careful use of lab tools?

    <p>Handle equipment sensitively.</p> Signup and view all the answers

    What is the purpose of using a tripod stand in the lab?

    <p>To hold Bunsen burners securely.</p> Signup and view all the answers

    What must happen for a chemical reaction to occur according to collision theory?

    <p>Reactant particles must collide with sufficient energy.</p> Signup and view all the answers

    How does increasing the surface area of a solid typically affect the reaction rate?

    <p>It increases the reaction rate.</p> Signup and view all the answers

    Which of the following factors does NOT affect the rate of a chemical reaction?

    <p>The color of the reactants.</p> Signup and view all the answers

    What was the independent variable changed in the experiment?

    <p>The temperature of the reactants</p> Signup and view all the answers

    What was measured as the dependent variable in this experiment?

    <p>The time taken for the reaction to occur</p> Signup and view all the answers

    In a teacher demonstration with sodium thiosulfate, what is being measured to determine the reaction speed?

    <p>The time it takes for the solution to become opaque.</p> Signup and view all the answers

    What is the primary role of a catalyst in a chemical reaction?

    <p>To increase the reaction rate without being consumed.</p> Signup and view all the answers

    How did the experiment ensure it was a fair test?

    <p>Keeping the same volume and concentration of reactants</p> Signup and view all the answers

    What is a method to improve the reliability of the experiment's results?

    <p>Repeating the experiment to find anomalies and calculate an average</p> Signup and view all the answers

    What is the conclusion about the effect of temperature on reaction rates?

    <p>Increasing temperature increases the reaction rate</p> Signup and view all the answers

    What is the primary cause of malnutrition?

    <p>An unbalanced diet</p> Signup and view all the answers

    Which nutrient deficiency is associated with rickets?

    <p>Vitamin D</p> Signup and view all the answers

    What condition is often caused by a deficiency of iron?

    <p>Anemia</p> Signup and view all the answers

    What is the formula for calculating BMI?

    <p>Weight in kg divided by the square of height in m</p> Signup and view all the answers

    Which of the following diseases is linked to inadequate calcium intake?

    <p>Osteoporosis</p> Signup and view all the answers

    What color indicates the presence of a large amount of sugar in food tests?

    <p>Red</p> Signup and view all the answers

    Which part of the body is responsible for producing bile?

    <p>Liver</p> Signup and view all the answers

    What process is used to move food from the esophagus to the stomach?

    <p>Peristalsis</p> Signup and view all the answers

    Which enzyme is NOT produced by the pancreas?

    <p>Bile</p> Signup and view all the answers

    What color change occurs when starch is present in a food test?

    <p>Blue-black</p> Signup and view all the answers

    What is the formula for calculating average speed?

    <p>Average speed = total distance / total time</p> Signup and view all the answers

    What unit is used to measure average speed?

    <p>Meters per second</p> Signup and view all the answers

    If a vehicle travels a distance of 6000 meters in 400 seconds, what is its average speed?

    <p>15 ms-1</p> Signup and view all the answers

    What does a horizontal line on a distance-time graph indicate?

    <p>Object is stopped or stationary</p> Signup and view all the answers

    How is the total stopping distance of a vehicle calculated?

    <p>Total stopping distance = thinking distance + breaking distance</p> Signup and view all the answers

    What is the formula used to calculate speed?

    <p>Speed = Distance ÷ Time</p> Signup and view all the answers

    Which of the following components is essential for hydration in the body?

    <p>Water</p> Signup and view all the answers

    What is the relationship between total stopping distance and other distances?

    <p>Total Stopping Distance = Thinking Distance + Breaking Distance</p> Signup and view all the answers

    Which nutrient is primarily responsible for providing energy?

    <p>Carbohydrates</p> Signup and view all the answers

    Which vitamin is important for making bones and tissues healthy?

    <p>Vitamin D</p> Signup and view all the answers

    How does an increase in temperature affect the rate of reaction?

    <p>Particles move faster and collide more frequently</p> Signup and view all the answers

    What is the result of adding a metal to an acid?

    <p>Formation of salt and hydrogen gas</p> Signup and view all the answers

    Which statement correctly describes what happens to acid concentration and reaction rate?

    <p>Higher concentration causes a rapid increase in reaction rate</p> Signup and view all the answers

    What happens to the particles in a chemical reaction when a catalyst is used?

    <p>They require less energy to collide and react</p> Signup and view all the answers

    Study Notes

    Rates of Reaction - Exam Questions

    • Conclusion - As the temperature increases, the rate of reaction also does.
    • What was the independent variable that was changed in the experiment?
      • The temperature of the reaction (water)
    • What was the time taken for the dependent variable that was changed?
      • The time taken for the reaction to happen.
    • How was this a fair test?
      • We used the same volume and concentration.
    • What would you do to make sure your results are reliable?
      • Repeat to find anomalies and find an average.

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    Description

    Test your knowledge on the essential functions of carbohydrates, enzymes, vitamins, and water in nutrition, along with crucial laboratory safety practices. This quiz covers key concepts that everyone should know in the fields of health science and laboratory work.

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