第 1 题
1 分Which of the following is the correct word equation for aerobic respiration in humans?
Pearson Edexcel IGCSE · Human Biology
Respiration：练习题
5 道选择题即时批改，另有 1 道文字题附完整解题步骤，全部围绕「Respiration」。
6 道题目9 分免费，无需注册
第 2 题
1 分A student uses a respirometer to measure the rate of respiration in a small organism. If the student adds a chemical that absorbs carbon dioxide, what will happen to the volume of air in the closed system as the organism breathes?
第 3 题
1 分Adenosine triphosphate (ATP) is the primary energy currency in human cells. During periods of intense physical activity, the rate of ATP hydrolysis increases significantly to provide energy for muscle contraction.
Which of the following statements correctly describes the role of ATP in energy transfer within the cell?
第 4 题
1 分Which chemical is used to test for the presence of carbon dioxide when investigating the difference between inspired and expired air?
第 5 题
1 分A student investigates the difference between inspired and expired air by breathing through a delivery tube into a flask containing limewater. After several breaths, the limewater in the flask turns cloudy.
Which statement correctly explains this observation?
第 6 题
4 分During strenuous exercise, muscle cells may undergo anaerobic respiration. Write the word equation for this process in human cells and explain why it results in an oxygen debt.
先自己写一遍答案，再对照解题步骤。
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