Which of the following best explains why it is necessary for the body to eliminate waste?
A. to allow the body to maintain a certain size
B. to keep the body’s internal environment in balance
C. to make room for nutrients coming in
D. to reduce unpleasant odors
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lesson 7 removing waste quiz
1. B
2. B
3. A
4. B
5. C
6. D
7. A
8. B
9. C
10. B
The best explanation for why it is necessary for the body to eliminate waste is option B - to keep the body's internal environment in balance. This explanation aligns with the basic function of the excretory system in the human body.
To understand why option B is the most appropriate answer, it helps to have a basic understanding of the excretory system. The excretory system plays a vital role in maintaining homeostasis, which refers to the body's ability to regulate its internal environment and keep it stable. One of the main functions of the excretory system is to eliminate metabolic waste products and toxins from the body.
Metabolic waste products, such as carbon dioxide and nitrogenous compounds like urea, are produced as byproducts of various cellular processes in the body. These waste products need to be eliminated to prevent them from building up and disrupting the body's internal balance. Accumulation of waste products can lead to various health problems, such as toxic buildup or disruptions in the pH balance of bodily fluids.
Additionally, the excretory system is involved in regulating water and electrolyte balance in the body. By excreting excess water and electrolytes through processes such as urine production, the body can maintain the optimal composition and concentration of these vital substances.
Options A, C, and D do not accurately explain the necessity of eliminating waste. The elimination of waste is not primarily for maintaining a certain size (option A), making room for incoming nutrients (option C), or reducing unpleasant odors (option D). While these may be minor factors, the primary reason for waste elimination is to maintain the body's internal environment in balance, as explained in option B.