Question
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This question has two parts.
A student is eating an apple.
Part A
Which of the following describes how the student's body systems work together to
release energy from the apple?
© The digestive system breaks down the apple into usable molecules, and
the circulatory system delivers the usable molecules to the cells.
® The respiratory system breaks down the apple into usable molecules, and
the digestive system delivers the usable molecules to the cells.
© The circulatory system breaks down the apple into usable molecules, and
the excretory system delivers the usable molecules to the cells.
© The excretory system breaks down the apple into usable molecules, and
the respiratory system delivers the usable molecules to the cells.
Part B
Body cells use oxygen to release energy from the molecules that were part of
the apple. Which body system brings in oxygen from the environment, and how
do body cells use the oxygen to release energy?
© The circulatory system brings in oxygen, and body cells use the oxygen for
cell division.
® The excretory system brings in oxygen, and body cells use the oxygen for
cell digestion.
© The digestive system brings in oxygen, and body cells use the oxygen for
cellular respiration.
© The respiratory system brings in oxygen, and body cells use the oxygen for
cellular respiration.
ring cellular
Answer
Part A: The digestive system breaks down the apple into usable molecules, and the circulatory system delivers the usable molecules to the cells. Part B: The respiratory system brings in oxygen, and body cells use the oxygen for cellular respiration.