Homework Answers
The correct option is A) Birds having one - way flow of air as it moves through the lungs.
The air sacs of birds allow a unidirectional flow of air through their lungs. As a result, air coming into a bird's lungs is not mixed with air that has already been in the lungs with less oxygen. So, in bird lungs, concentration of oxygen is high which is available to diffuse into the blood. The rate of diffusion of a gas is directly proportional to concentration gradient. The greater the gradient, the faster the rate of diffusion.
The other three options are examples for evolutionary strategies for maximizing gas diffusion. Having a large surface area increases the amount of gas that can diffuse through them.
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Question 29 1.67 pts Which of the following is an example of maximizing the concentration difference...
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OWL UCLIO Que ✓ Que V Que Question 39 1.67 pts Which of the following adaptations is an example of maximizing the surface area for diffusion? Time Runni Attempte 1 Hour, 5M Birds having one-way flow of air as it moves through the lungs 24/7 Proct Fish gills having counter-current flow of water and oxygenated blood Calci Epithelial membranes always being very thin and kept moist Live Frogs using their entire body skin for gas exchange 7 Phú
Section 1 (2 pts) 1) Which of the following is true: A. the diaphragm is responsible...
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1. Which of the following statements is FALSE? Homeotherms can sustain a high level of physical...
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Question 37 Which of the following increases oxygen unloading? decreased BPG e decreased pCO2 in the...
Question 37 Which of the following increases oxygen unloading? decreased BPG e decreased pCO2 in the plasma All of these answers are correct. increased blood pH increased body temperature Question 38 What is a classic scenario, as described in class, where oxygen unloading would be increased? while eating food during exercise during tidal volume breathing while drinking water divas → XCIO D Question 39 Which of the following is FALSE regarding breathing? It requires skeletal muscles for normal, quiet exhalation....
Question 3 (2 points) Which of the following statements accurately describes the following reaction? Peptides +...
Question 3 (2 points) Which of the following statements accurately describes the following reaction? Peptides + Dipeptides Perles Dipepidares > Free amino acids A-A-A A-A A A А A A Enzymatic digestion of proteins in the stomach by enzymes secreted by the pancreas Enzymatic digestion of proteins in the stomach by enzymes such as pepsin Enzymatic digestion of proteins in the small intestine by the enzyme trypsin secreted by the pancreas O two of the choices are correct none of...
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BIOL 1620o, Spring 2019 NAME (Last, Preferred First): Date: 45. What is the most important means by which capillay exchange occurs? 53. Which of the following organs does NOT contain lymphatic...
BIOL 1620o, Spring 2019 NAME (Last, Preferred First): Date: 45. What is the most important means by which capillay exchange occurs? 53. Which of the following organs does NOT contain lymphatic tissue? A. liver B. spleen C. lingual tonsils A. exocytosis B. diffusiorn C. ATP powered pumps D. facilitated diffusion E. pharyngeal tonsils. 46.According to Poiseuille's law A. blood flow is not related to resistance. B. ph of the blood influences flow C. viscosity of the blood is not related...
OWL UCLIO Que ✓ Que V Que Question 39 1.67 pts Which of the following adaptations is an example of maximizing the surface area for diffusion? Time Runni Attempte 1 Hour, 5M Birds having one-way flow of air as it moves through the lungs 24/7 Proct Fish gills having counter-current flow of water and oxygenated blood Calci Epithelial membranes always being very thin and kept moist Live Frogs using their entire body skin for gas exchange 7 Phú
Section 1 (2 pts) 1) Which of the following is true: A. the diaphragm is responsible for 75% of thoracic expansion B. expiration is dependent upon external intercostal muscle activity C. Intrapulmonary pressure is always greater than atmospheric pressure D. The diaphragm and external intercostal muscles are two major accessory muscles OOOO 2) Which of the following statements on external respiration is true: (2pts) A. the concentration of oxygen is greater in pulmonary circulation than in the alveoli B. the...
Question 37 Which of the following increases oxygen unloading? decreased BPG e decreased pCO2 in the plasma All of these answers are correct. increased blood pH increased body temperature Question 38 What is a classic scenario, as described in class, where oxygen unloading would be increased? while eating food during exercise during tidal volume breathing while drinking water divas → XCIO D Question 39 Which of the following is FALSE regarding breathing? It requires skeletal muscles for normal, quiet exhalation....
Question 3 (2 points) Which of the following statements accurately describes the following reaction? Peptides + Dipeptides Perles Dipepidares > Free amino acids A-A-A A-A A A А A A Enzymatic digestion of proteins in the stomach by enzymes secreted by the pancreas Enzymatic digestion of proteins in the stomach by enzymes such as pepsin Enzymatic digestion of proteins in the small intestine by the enzyme trypsin secreted by the pancreas O two of the choices are correct none of...
Name: Integumentary System Case Study: Jon's Story (Each question is worth 0.5 pts) At 63 years old, Jon was retiring early by most people's standards, but he felt it was time and he was looking forward to it. His mind wandered as he raked the dry remnants of his front yard. The African summer had been hotter than usual but he had always worked outdoors and the warmth of the sun on his face felt good. Jon had grown up...
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