If a fish close to the surface swam down to a depth of 10m below the surface it would need to ______ to maintain neutral buoyancy. let air out of its swim bladder to keep the volume constant let air out of its swim bladder to reduce the volume constant put air into its swim bladder to keep the volume constant put enough air into its swim bladder to double the volume

If a fish close to the surface swam down to a depth of 10m below the surface it would need to ______ to maintain neutral buoyancy. let air out of its swim bladder to keep the volume constant let air out of its swim bladder to reduce the volume constant put air into its swim bladder to keep the volume constant put enough air into its swim bladder to double the volume

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter39: The Respiratory System

Section: Chapter Questions

Problem 1VCQ: Figure 39.7 Which of the following statements about the mammalian respiratory system is false? When...

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Breathing _______. a. ventilates the lungs b. draws air into airways c. expels air from airways d. causes reversals in pressure gradients e. all of the above
Figure 39.7 Which of the following statements about the mammalian respiratory system is false? When we breathe in, air travels from the pharynx to the trachea. The bronchioles branch into bronchi. Alveolar ducts connect to alveolar sacs. Gas exchange between the lung and blood takes place in the alveolus.
In______, gas exchange occurs at the body surface and gas is distributed by diffusion alone. a. earthworm c. frogs b. flatworms d. insects
Figure 39.13 Which of the following statements is false? In the tissues, PO2 drops as blood passes from the arteries to the veins, while PCO2 increases. Blood travels from the lungs to the heart to body tissues, then back to the heart, then the lungs. Blood travels from the lungs to the heart to body tissues, then back to the lungs, then the heart. PO2 is higher in air than in the lungs.
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 above
Gas exchange is more difficult for aquatic animals with gills than for terrestrial animals with lungs because CHECK ALL THAT WOULD APPLY water contains much more O2 per unit volume than air gills allow water to flow in one direction. water contains much less O2 per unit volume than air gills have less surface area than lungs. water is denser than air
During the process of inhaling the diaphragm contracts. As a result, air enters the human lungs because of Group of answer choices atmospheric pressure is greater than the pressure inside the lungs. atmospheric pressure is less than the pressure inside the lungs.
If you hold your breath for a long time, body CO2 levels are likely to ____, and the pH of body fluids is likely to ____.a. increase; increaseb. decrease; increasec. increase; decreased. decrease; decrease
A marine biologist is preparing a deep-sea submersible for a dive. The sub stores breathing aid under high pressure in a spherical tank that measures 84.0cm wide. The biologist estimates she will need 3200. L of aid for the five. Calculate the pressure to which this volume of air must be compressed in order to fit into the air tank. Round your answer to 3 sig figs and write your answer in atmospheres.
blood ph varies between 7.35 and 7.45, with a target value of 7.4. if someone's blood ph begins to decrease, chemoreceptors detect this change and send the information to the brain the brain analyzes the input and sends out a command to the respiratory muscles causing breathing rate to increases, which reduces carbon dioxide levels and thereby increases the ph of ther blood. name the body part, values, or actions in this specific scenario involving ph Normal range Set point Stimulus Sensor integrsting center Effector Response
When our tissues are burning metabolic fuel they produce protons and carbon dioxide. The enzyme carbonic anhydrase uses water to convert most of the carbon dioxide into carbonic acid. i) Describe the change of the blood carbon dioxide concentration of the swimmer from Phase I to the end of Phase II (do NOT explain the other phases)? ii) How does this change in the blood carbon dioxide concentration impact the pH of the blood of the swimmer from Phase I to the end of Phase II (do NOT explain the other phases)? iii) explain the chemical reasoning behind the impact on pH from Phase I to the end of Phase II (do NOT explain the other phases).
Oxygen exchange (acquisition) in aquatic organisms is limited by __________ diffusion rate and __________ oxygen content, especially in __________ water temperatures. A. high; low; lower B. low; low; higher C. high; high; higher D. low; low; lower E. low; high; higher