Concept explainers
Test Your Understanding
1. Which of the following is a benefit of gas exchange in air compared with gas exchange in water? (a) air has a higher concentration of molecular oxygen (b) oxygen diffuses more slowly in air (c) no energy is required for ventilation (d) moist respiratory surface is not needed (e) air is denser than water
Introduction: The process of gas exchange that occurs between an organism and its environment is known as respiration. For cellular respiration, most of the animal cells need a continuous oxygen supply. During respiration, oxygen is inhaled from the environment and transported to individual cells of the body. Carbon dioxide produced during the cellular respiration is exhaled from the body to the environment.
Answer to Problem 1TYU
Correct answer: A benefit of gas exchange in air compared with gas exchange in water is that air has a higher concentration of molecule oxygen. Hence, the correct answer is option (a).
Explanation of Solution
Reason for the correct answer:
Option (a) is given as “air has a higher concentration of molecular oxygen”.
The benefit of gas exchange in air over gas exchange in water is due to the following reasons:
- Air medium contains high molecular oxygen concentration at least 20 times more than the water medium.
- Energy requirement is less in air medium than the water medium to obtain oxygen.
- Oxygen diffuses faster in air than in water, as air is less dense and less viscous.
Hence, the correct answer is option (a).
Reasons for incorrect answers:
Option (b) is given as “oxygen diffuses more slowly in air”. Diffusion of oxygen is faster in air than in water, as air is less dense and less viscous than water. Hence, option (b) is incorrect.
Option (c) is given as “no energy is required for ventilation”. Energy requirement for ventilation is less in air medium than in in water medium. Hence, option (c) is incorrect.
Option (d) is given as “moist respiratory surface is not needed”. For gas exchange between air and blood, a moist respiratory surface is essential. Hence, option (d) is incorrect.
Option (e) is given as “air is denser than water”. Air is less dense and less viscous than water. Hence, option (e) is incorrect.
Hence, options (b), (c), (d), and (e) are incorrect.
The advantage of gas exchange in air compared with gas exchange in water is that air has a higher concentration of molecule oxygen.
Want to see more full solutions like this?
Chapter 46 Solutions
EBK BIOLOGY
- Artificial Selection: Explain how artificial selection is like natural selection and whether the experimental procedure shown in the video could be used to alter other traits. Why are quail eggs useful for this experiment on selection?arrow_forwardDon't give AI generated solution otherwise I will give you downwardarrow_forwardHello, Can tou please help me to develope the next topic (in a esquematic format) please?: Function and Benefits of Compound Microscopes Thank you in advance!arrow_forward
- Identify the AMA CPT assistant that you have chosen. Explain your interpretation of the AMA CPT assistant. Explain how this AMA CPT assistant will help you in the future.arrow_forwardwhat is the difference between drug education programs and drug prevention programsarrow_forwardWhat is the formula of Evolution? Define each item.arrow_forward
- Define the following concepts from Genetic Algorithms: Mutation of an organism and mutation probabilityarrow_forwardFitness 6. The primary theory to explain the evolution of cooperation among relatives is Kin Selection. The graph below shows how Kin Selection theory can be used to explain cooperative displays in male wild turkeys. B When paired, subordinant males increase the reproductive success of their solo, dominant brothers. 0.9 C 0 Dominant Solo EVOLUTION Se, Box 13.2 © 2023 Oxford University Press rB rB-C Direct Indirect Fitness fitness fitness gain Subordinate 19 Fitness After A. H. Krakauer. 2005. Nature 434: 69-72 r = 0.42 Subordinant Dominant a) Use Hamilton's Rule to show how Kin Selection can support the evolution of cooperation in this system. Show the math. (4 b) Assume that the average relatedness among male turkeys in displaying pairs was instead r = 0.10. Could kin selection still explain the cooperative display behavior (show math)? In this case, what alternative explanation could you give for the behavior? (4 pts) 7. In vampire bats (pictured below), group members that have fed…arrow_forwardExamine the following mechanism and classify the role of each labeled species in the table below. Check all the boxes that applyarrow_forward
- 1. Define and explain the two primary evolutionary consequences of interspecific competitionarrow_forward2 A linear fragment of DNA containing the Insulin receptor gene is shown below, where boxes represent exons and lines represent introns. Assume transcription initiates at the leftmost EcoRI site. Sizes in kb are indicated below each segment. Vertical arrows indicate restriction enzyme recognition sites for Xbal and EcoRI in the Insulin receptor gene. Horizontal arrows indicate positions of forward and reverse PCR primers. The Horizontal line indicates sequences in probe A. Probe A EcoRI Xbal t + XbaI + 0.5kb | 0.5 kb | 0.5 kb | 0.5kb | 0.5 kb | 0.5 kb | 1.0 kb EcoRI On the gel below, indicate the patterns of bands expected for each DNA sample Lane 1: EcoRI digest of the insulin receptor gene Lane 2: EcoRI + Xbal digest of the insulin receptor gene Lane 3: Southern blot of the EcoRI + Xbal digest insulin receptor gene probed with probe A Lane 4: PCR of the insulin receptor cDNA using the primers indicated Markers 6 5 4 1 0.5 1 2 3 4arrow_forward4. (10 points) woman. If both disease traits are X-linked recessive what is the probability A man hemizygous for both hemophilia A and color blindness mates with a normal hemophilia A nor colorblindness if the two disease genes show complete that a mating between their children will produce a grandson with neither a. linkage? (5 points) that a mating between their children will produce a grandson with both hemophilia A and colorblindness if the two disease genes map 40 cM apart? (5 points)arrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage LearningConcepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax CollegeHuman Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning