GED Practice

GED Science Review: Cells and Energy

Questions:
Directions: Choose the answer to each question.
Questions 1 and 2 refer to the following nutrition label.


  1. Which of the following nutrients is present in the largest amount in each serving of this food?
    • dietary fiber
    • protein
    • saturated fat
    • sugars

  2. If you ate two servings of this food, what percentage of the daily value of sodium would you be consuming?
    • 2%
    • 4%
    • 60%
    • 120%

      Questions 3 and 4 refer to the following passage and equations.

      People and other animals get their energy from food. When you eat carbohydrates, your digestive system breaks them down into a simple sugar, called glucose. Glucose enters the cells of the body, where it is broken down further to release energy. This complex chemical process is called cellular respiration. The equations below illustrate cellular respiration.
      CHO + 6O —> 6CO + 6HO + energy
      glucose + oxygen —> carbon dioxide + water + energy
  3. What would happen to energy production in the cell if a person were to eat less food?
    • Less glucose would be available, leading to less energy production.
    • More glucose would be available, leading to more energy production.
    • The amount of water would decrease, leading to more energy production.
    • The amount of oxygen would decrease, leading to less energy production.
  4. Which result is most likely if the supply of oxygen to a cell is reduced?
    • Less energy is released.
    • More carbon dioxide is released.
    • The rate of cellular respiration speeds up.
    • The breakdown if carbohydrate to glucose slows down.

      Question 5 and 6 refer to the following diagram.


  5. According to the diagram, what is the relationship between amino acids and proteins?
    • Catabolism of amino acids produces proteins.
    • Anabolism breaks down proteins into amino acids.
    • Energy from glucose allows animo acids to form proteins.
    • Energy from carbon dioxide creates proteins from amino acids.
  6. If the amount of glucose entering the cell increases, what is the most likely result?
    • Less energy is released.
    • More carbon dioxide is released.
    • The rate of cellular respiration speeds up.
    • The breakdown if carbohydrate to glucose slows down.
Answer:

  1. sugars
  2. 4%
  3. Less glucose would be available, leading to less energy production.
  4. Less energy is released.
  5. Energy from glucose allows animo acids to form proteins
  6. Less energy is released.









Reference:


Complete Test Preparation for the GED Test 2014 by Steck-Vaughn