Concepts of Biology
1st Edition
ISBN: 9781938168116
Author: Samantha Fowler, Rebecca Roush, James Wise
Publisher: OpenStax College
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Chapter 4, Problem 18CTQ
We inhale oxygen when we breathe and exhale carbon dioxide. What is the oxygen used for and where does the carbon dioxide come from?
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Chapter 4 Solutions
Concepts of Biology
Ch. 4 - Figure 4.6 Look at each of the processes shown and...Ch. 4 - Figure 4.15 Cyanide inhibits cytochrome c oxidase,...Ch. 4 - Figure 4.16 Tremetol, a metabolic poison found in...Ch. 4 - Which of the following is not an example of an...Ch. 4 - Which of the following is not true about enzymes?...Ch. 4 - Energy is stored long-term in the bonds of _____...Ch. 4 - The energy currency used by cells is _____. a. ATP...Ch. 4 - The glucose that enters the glycolysis pathway is...Ch. 4 - What do the electrons added to NAD do? a. They...Ch. 4 - Chemiosmosis involves a. the movement of electrons...
Ch. 4 - Which of the following fermentation methods can...Ch. 4 - The cholesterol synthesized by cells uses which...Ch. 4 - Beta oxidation is ______. a. the breakdown of...Ch. 4 - Does physical exercise to increase muscle mass...Ch. 4 - Explain in your own terms the difference between a...Ch. 4 - With regard to enzymes, why are vitamins and...Ch. 4 - Both prokaryotic and eukaryotic organisms carry...Ch. 4 - We inhale oxygen when we breathe and exhale carbon...Ch. 4 - When muscle cells run out of oxygen, what happens...Ch. 4 - Would you describe metabolic pathways as...
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- What reactions enhance the transport of carbon dioxide throughout the body? How is carbon dioxide moved out of the body?arrow_forwardWhat drives oxygen from the air spaces in alveoli, through tissue fluid, and across capillary epithelium? What drives carbon dioxide in the opposite direction?arrow_forwardDue to its partial pressure gradient, carbon dioxide diffuses from cells into tissue fluid and into the ________; in the lungs, carbon dioxide diffuses into the ________. a. alveoli; bronchioles b. bloodstream; bronchioles c. alveoli; bloodstream d. bloodstream; alveoliarrow_forward
- Underwater, we humans cant compete with whales and other air-breathing marine mammals, which can stay submerged for extended periods. At the beach one day you meet a surfer who tells you that special training could allow her to swim underwater without breathing for an entire hour. From what you know of respiratory physiology, explain why she is mistaken.arrow_forwardHow do nerve impulses from the brain regulate ventilation of the lungs? How are the rate and depth of breathing controlled?arrow_forwardHow does the structure of alveoli maximize gas exchange?arrow_forward
- What are some advantages of gas exchange in air over gas exchange in water?arrow_forwardDuring inhalation, ________. a. the thoracic cavity expands d. the diaphragm relaxes c. atmospheric pressure declines d. the lungs deflatearrow_forwardWhen you sneeze, abdominal muscles abruptly contract, pushing your diaphragm upward. Given the discussion of the respiratory cycle in Section 10.4, why does this change expel air out your nose?arrow_forward
- A partial pressure gradient of oxygen exists between ________. a. air and lungs b. lungs and metabolically active tissues c. air at sea level and air at high altitudes d. all of the abovearrow_forwardThe respiratory system_______. a. provides body tissues with oxygen b. provides body tissues with oxygen and carbon dioxide c. establishes how many breaths are taken per minute d. provides the body with carbon dioxidearrow_forward
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