Question

part 4: short answer questions 6. explain why the respiratory system is essential for cellular respiration to take place. 7. how does the circulatory system help distribute the products of cellular respiration throughout the body? 8. what would happen to the bodys cells if cellular respiration could not occur? part 5: matching activity match the molecules involved in cellular respiration to the body systems that use or transport them. hint: each system uses more than one molecule. body system a. circulatory system b. muscular system c. respiratory system d. excretory system e. digestive system molecule glucose oxygen carbon dioxide atp water

Explanation:

1. The respiratory system takes in oxygen and expels carbon - dioxide. Oxygen is required for cellular respiration to produce ATP, the energy currency of the cell. Without oxygen from the respiratory system, cells cannot perform aerobic respiration and produce enough energy.
2. The circulatory system transports oxygen - rich blood from the lungs to the body's cells and carries carbon - dioxide, a waste product of cellular respiration, back to the lungs for exhalation. It also transports nutrients like glucose which are used in cellular respiration.
3. If cellular respiration could not occur, cells would not be able to produce ATP. This would lead to a lack of energy for cellular functions, resulting in cell death, and eventually organ and body - wide failure as cells are unable to perform their normal tasks.

For the matching part:

• Oxygen is used by the respiratory system to take in and by the circulatory system to transport to cells.
• Glucose is absorbed by the digestive system and transported by the circulatory system to cells for cellular respiration.
• Carbon - dioxide is a product of cellular respiration, transported by the circulatory system to the respiratory system for exhalation.
• ATP is the product of cellular respiration and used by all body systems for energy.
• Water is a by - product of cellular respiration and is dealt with by the excretory system for removal from the body.

Answer:

1. The respiratory system is essential because it supplies oxygen needed for cellular respiration to produce ATP. Also, it removes carbon - dioxide, a waste product of cellular respiration.
2. The circulatory system transports oxygen, nutrients (like glucose) needed for cellular respiration to cells and removes waste products (like carbon - dioxide) from cells.
3. Cells would not be able to produce ATP. This would lead to cell death as they lack energy for normal functions, and eventually organ and body failure.

Part 5:
Oxygen: C. Respiratory System, A. Circulatory System
Glucose: E. Digestive System, A. Circulatory System
Carbon Dioxide: A. Circulatory System, C. Respiratory System
ATP: All body systems use it for energy
Water: D. Excretory System