Question 1

The ____ represent an internal respiratory system. ​

Accepted Answer

A) skin folds on an amphibian 
B) broad, flat body of a flatworm 
C) branched gill filaments 
D) folds within human lungs 
E) gills on a salamander 
A) skin folds on an amphibian 
B) broad, flat body of a flatworm 
C) branched gill filaments 
D) folds within human lungs 
E) gills on a salamander

Question 2

Explain how a diving marine mammal increases its supply of stored O2, in spite of the fact that its lungs are collapsed at depths below 25 meters. ​

Accepted Answer

Marine mammals increase their

Question 3

The ____ cells are most sensitive to reduced O2 levels. ​

Accepted Answer

A) heart 
B) kidney 
C) liver 
D) brain 
E) pancreatic 
A) heart 
B) kidney 
C) liver 
D) brain 
E) pancreatic

Question 4

Alveoli are the respiratory surfaces of birds. ​

Accepted Answer

A) True 
 B)False

Question 5

Why is proper ventilation important for a respiring animal? ​

Accepted Answer

A) It directly increases gas exchange between the blood and cells. ​ 
B) It maintains proper O2 and CO2 levels on the external side of the respiratory surface so diffusion across it can be maintained. 
C) It maintains blood circulation within the body of an animal. 
D) It maintains proper O2 and CO2 levels on the internal side of the respiratory surface so diffusion across it can be maintained. 
E) It directly maintains proper O2 and CO2 levels in tissues. 
A) It directly increases gas exchange between the blood and cells. ​ 
B) It maintains proper O2 and CO2 levels on the external side of the respiratory surface so diffusion across it can be maintained. 
C) It maintains blood circulation within the body of an animal. 
D) It maintains proper O2 and CO2 levels on the internal side of the respiratory surface so diffusion across it can be maintained. 
E) It directly maintains proper O2 and CO2 levels in tissues.

Question 6

During human inhalation, the diaphragm ____ and the external intercostal muscles ____. ​

Accepted Answer

A) contracts; relax 
B) relaxes; contract 
C) contracts; contract 
D) relaxes; relax 
E) expands; vibrate 
A) contracts; relax 
B) relaxes; contract 
C) contracts; contract 
D) relaxes; relax 
E) expands; vibrate

Question 7

A man is found dead with no marks on his body in a small enclosed furnace closet. The medical examiner rules death by hypoxia. However, the criminal investigation finds that the room has adequate air flow. What is the most reasonable explanation for the cause of death that should be investigated further? ​

Accepted Answer

A) There was too little oxygen in the room. 
B) The furnace was faulty and burned up all the oxygen. ​ 
C) The furnace was faulty and released carbon monoxide which accumulated in the closet. 
D) There was too much carbon dioxide in the room. 
E) The man strangled himself but the rope disappeared. 
A) There was too little oxygen in the room. 
B) The furnace was faulty and burned up all the oxygen. ​ 
C) The furnace was faulty and released carbon monoxide which accumulated in the closet. 
D) There was too much carbon dioxide in the room. 
E) The man strangled himself but the rope disappeared.

Question 8

Match between columns
                        Premises: pharynx

Accepted Answer

The Answer of 2 and 5 and 4 and 9 is...

Question 9

In humans, ____ is involved in both cellular and physiological respiration. ​

Accepted Answer

A) the circulatory system 
B) the respiratory surface 
C) mitochondria 
D) the respiratory medium 
E) blood 
A) the circulatory system 
B) the respiratory surface 
C) mitochondria 
D) the respiratory medium 
E) blood

Question 10

Each molecule of hemoglobin can bind up to six molecules of oxygen. ​

Accepted Answer

A) True 
 B)False

Question 11

Hemoglobin binds strongest to ____. ​

Accepted Answer

A) oxygen 
B) carbon monoxide 
C) carbon dioxide 
D) carbonic acid 
E) bicarbonate ions 
A) oxygen 
B) carbon monoxide 
C) carbon dioxide 
D) carbonic acid 
E) bicarbonate ions

Question 12

Which respiratory surface lacks physical protection from the external environment? ​

Accepted Answer

A) tracheal system tubes 
B) human lungs 
C) external gills 
D) internal gills 
E) bird lungs 
A) tracheal system tubes 
B) human lungs 
C) external gills 
D) internal gills 
E) bird lungs

Question 13

Compare the efficiency of mammalian lungs versus fish gills. ​

Accepted Answer

Fish gills are 80% to 90% effi

Question 14

Match between columns
                        Premises: diaphragm

Accepted Answer

The Answer of 5 and 2 and 7 and 8 is...

Question 15

Alveoli are surrounded by pulmonary capillaries . ​

Accepted Answer

A) True 
 B)False

Question 16

Amphibians often use ____ as a respiratory surface. ​

Accepted Answer

A) skin ​ 
B) a tracheal system 
C) internal gills 
D) external gills 
E) scales 
A) skin ​ 
B) a tracheal system 
C) internal gills 
D) external gills 
E) scales

Question 17

Match between columns
                        Premises: intercostal muscles

Accepted Answer

The Answer of 7 and 9 and 6 and 5 is...

Question 18

Match between columns
                        Premises: nasal passages

Accepted Answer

The Answer of 2 and 9 and 10 and 6 is...

Question 19

The number-one risk factor for sudden infant death syndrome (SIDS)is ____. ​

Accepted Answer

A) an infant lying on their back 
B) breast feeding an infant 
C) premature feeding of solid foods 
D) exposure to tobacco smoke 
E) holding the infant 
A) an infant lying on their back 
B) breast feeding an infant 
C) premature feeding of solid foods 
D) exposure to tobacco smoke 
E) holding the infant

Question 20

CO2 is transported in the blood ____. ​

Accepted Answer

A) dissolved in the plasma exclusively 
B) as bicarbonate ions exclusively 
C) bound to hemoglobin exclusively 
D) dissolved in the red blood cells exclusively 
E) dissolved in the plasma, as bicarbonate ions, and bound to hemoglobin 
A) dissolved in the plasma exclusively 
B) as bicarbonate ions exclusively 
C) bound to hemoglobin exclusively 
D) dissolved in the red blood cells exclusively 
E) dissolved in the plasma, as bicarbonate ions, and bound to hemoglobin

Exam 46: Gas Exchange: the Respiratory System

The ____ represent an internal respiratory system. ​

Explain how a diving marine mammal increases its supply of stored O2, in spite of the fact that its lungs are collapsed at depths below 25 meters. ​

The ____ cells are most sensitive to reduced O2 levels. ​

Alveoli are the respiratory surfaces of birds. ​

Why is proper ventilation important for a respiring animal? ​

During human inhalation, the diaphragm ____ and the external intercostal muscles ____. ​

In humans, ____ is involved in both cellular and physiological respiration. ​

Each molecule of hemoglobin can bind up to six molecules of oxygen. ​

Hemoglobin binds strongest to ____. ​

Which respiratory surface lacks physical protection from the external environment? ​

Compare the efficiency of mammalian lungs versus fish gills. ​

Alveoli are surrounded by pulmonary capillaries . ​

Amphibians often use ____ as a respiratory surface. ​

The number-one risk factor for sudden infant death syndrome (SIDS)is ____. ​

CO2 is transported in the blood ____. ​

Introduction to Biological Concepts and Research

Life, Chemistry, and Water

Biological Molecules: the Carbon Compounds of Life

Cells

Membranes and Transport

Energy, Enzymes, and Biological Reactions

Cellular Respiration: Harvesting Chemical Energy

Photosynthesis

Cell Communication

Cell Division and Mitosis

Meiosis: the Cellular Basis of Sexual Reproduction

Mendel, Genes, and Inheritance

Genes, Chromosomes, and Human Genetics

DNA Structure, Replication, and Organization

From DNA to Protein

Regulation of Gene Expression

Bacterial and Viral Genetics

Dna Technologies: Making and Using Genetically Altered Organisms, and Other Applications

Genomes and Proteomes

The Development of Evolutionary Thought

Microevolution: Genetic Changes Within Populations

Speciation

Paleobiology and Macroevolution

Systematic Biology: Phylogeny and Classification

The Origin of Life

Prokaryotes and Viruses

Protists

Seedless Plants

Seed Plants

Fungi

Animal Phylogeny, Acoelomates, and Protostomes

Deuterostomes: Vertebrates and Their Closest Relatives

The Plant Body

Transport in Plants

Plant Nutrition

Reproduction and Development in Flowering Plants

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Information Flow and the Neuron

Nervous Systems

Sensory Systems

The Endocrine System

Muscles, Bones, and Body Movements

The Circulatory System

Defenses Against Disease

Animal Nutrition

Regulating the Internal Environment

Animal Reproduction

Animal Development

Ecology and the Biosphere

Population Ecology

Population Interactions and Community Ecology

Ecosystems

Biodiversity and Conservation Biology

Animal Behavior

Filters

The ____ represent an internal respiratory system.

Explain how a diving marine mammal increases its supply of stored O₂, in spite of the fact that its lungs are collapsed at depths below 25 meters.

The ____ cells are most sensitive to reduced O₂ levels.

Alveoli are the respiratory surfaces of birds.

Why is proper ventilation important for a respiring animal?

During human inhalation, the diaphragm and the external intercostal muscles .

In humans, ____ is involved in both cellular and physiological respiration.

Each molecule of hemoglobin can bind up to six molecules of oxygen.

Hemoglobin binds strongest to ____.

Which respiratory surface lacks physical protection from the external environment?

Compare the efficiency of mammalian lungs versus fish gills.

Alveoli are surrounded by pulmonary capillaries .

Amphibians often use ____ as a respiratory surface.

The number-one risk factor for sudden infant death syndrome (SIDS)is ____.

CO₂ is transported in the blood ____.