Question 1

In the lungs, ________ diffuses into the bloodstream where it is in low concentration, and ________ diffuses from the bloodstream into the lungs.

Accepted Answer

oxygen; ca

Question 2

Sea jellies lack a circulatory system because:

Accepted Answer

A) they have no immune system. 
B) they breathe air. 
C) their tissues have low metabolic demands. 
D) their rapid metabolic processes ensure steep concentration gradients. 
A) they have no immune system. 
B) they breathe air. 
C) their tissues have low metabolic demands. 
D) their rapid metabolic processes ensure steep concentration gradients.

Question 3

Movement of O2 from the outside air to respiratory surfaces by breathing is an example of:

Accepted Answer

A) diffusion. 
B) active transport. 
C) facilitated diffusion. 
D) osmosis. 
E) bulk flow. 
A) diffusion. 
B) active transport. 
C) facilitated diffusion. 
D) osmosis. 
E) bulk flow.

Question 4

For smokers who quit smoking, when does healing begin?

Accepted Answer

A) immediately 
B) after 6 months 
C) after a year 
D) after 5 years 
A) immediately 
B) after 6 months 
C) after a year 
D) after 5 years

Question 5

All of the following are respiratory surfaces EXCEPT:

Accepted Answer

A) tracheae of a fly. 
B) bat wings. 
C) skin of an earthworm. 
D) gills of a fish. 
E) alveoli of a raccoon. 
A) tracheae of a fly. 
B) bat wings. 
C) skin of an earthworm. 
D) gills of a fish. 
E) alveoli of a raccoon.

Question 6

Cystic fibrosis (CF)is a disease caused by a mutation in a gene called the cystic fibrosis transmembrane conductance regulator (CFTR). Among other functions, this gene helps create sweat and mucus. There is no cure for CF, and most individuals who have it die in their twenties and thirties. Based on this scenario, what would you conclude about people who have CF?

Accepted Answer

A) They suffer from incessant coughing and lung failure. 
B) They have extremely thin skin that is easily damaged. 
C) They have elevated oxygen levels in their blood. 
D) They have excessive growth rates that result in gigantism. 
E) They have dangerously high blood pressure. 
A) They suffer from incessant coughing and lung failure. 
B) They have extremely thin skin that is easily damaged. 
C) They have elevated oxygen levels in their blood. 
D) They have excessive growth rates that result in gigantism. 
E) They have dangerously high blood pressure.

Question 7

What happens during inhalation?

Accepted Answer

A) The diaphragm is contracted. 
B) Rib muscles are relaxed. 
C) Air is leaving the alveoli. 
D) The chest wall moves away from the lungs. 
E) The heart pumps blood to the lungs. 
A) The diaphragm is contracted. 
B) Rib muscles are relaxed. 
C) Air is leaving the alveoli. 
D) The chest wall moves away from the lungs. 
E) The heart pumps blood to the lungs.

Question 8

Closed air sacs in which gas exchange occurs in mammals are called;

Accepted Answer

A) alveoli. 
B) bronchi. 
C) the pharynx. 
D) tracheae. 
E) bronchioles. 
A) alveoli. 
B) bronchi. 
C) the pharynx. 
D) tracheae. 
E) bronchioles.

Question 9

During inhalation, the diaphragm:

Accepted Answer

A) contracts and is dome-shaped. 
B) relaxes and is dome-shaped. 
C) contracts and is flattened. 
D) relaxes and is flattened. 
A) contracts and is dome-shaped. 
B) relaxes and is dome-shaped. 
C) contracts and is flattened. 
D) relaxes and is flattened.

Question 10

How are cellular respiration and respiratory systems related?

Accepted Answer

Cellular respiration uses oxyg

Question 11

When a cell is respiring, carbon dioxide is in ________ concentration inside the cell, causing it to diffuse out, whereas ________ is in high concentration outside the cell, causing it to diffuse in.

Accepted Answer

The answer of When a cell is respiring, carbon dioxide...

Question 12

What structures make up the large surface area for gas exchange in fish?

Accepted Answer

There are many gills, each of

Question 13

Most of the carbon dioxide released from cells is transported as:

Accepted Answer

A) dissolved carbon monoxide. 
B) bicarbonate ions in the plasma. 
C) carbon dioxide attached to hemoglobin. 
D) carbohydrates, such as glucose. 
A) dissolved carbon monoxide. 
B) bicarbonate ions in the plasma. 
C) carbon dioxide attached to hemoglobin. 
D) carbohydrates, such as glucose.

Question 14

Hemoglobin is a respiratory protein. Its function is to:

Accepted Answer

A) increase the oxygen-carrying capacity of blood. 
B) assist in blood clotting. 
C) attract lymphocytes to damaged tissues. 
D) remove toxins from plasma. 
E) provide structural integrity to red blood cells. 
A) increase the oxygen-carrying capacity of blood. 
B) assist in blood clotting. 
C) attract lymphocytes to damaged tissues. 
D) remove toxins from plasma. 
E) provide structural integrity to red blood cells.

Question 15

As shown in this figure, blood flow and water flow are:

Accepted Answer

A) in the same direction (concurrent). 
B) in opposite directions (countercurrent). 
C) not moving anywhere near the capillaries. 
D) perpendicular to the cross-section of the lamellae. 
A) in the same direction (concurrent). 
B) in opposite directions (countercurrent). 
C) not moving anywhere near the capillaries. 
D) perpendicular to the cross-section of the lamellae.

Question 16

What are spiracles?

Accepted Answer

A) openings between the gills of a frog tadpole 
B) openings into the tracheae of insects 
C) openings into the alveoli of the lungs 
D) openings to the bronchi 
A) openings between the gills of a frog tadpole 
B) openings into the tracheae of insects 
C) openings into the alveoli of the lungs 
D) openings to the bronchi

Question 17

Which of the following is one consequence of passive smoking?

Accepted Answer

A) Nonsmoking children of smokers are more likely to contract bronchitis. 
B) Smokers are more likely to have diminished lung capacity. 
C) Nonsmoking spouses of smokers have a 30% lower risk of heart attack. 
D) Nonsmoking children of smokers are less likely to develop atherosclerosis. 
A) Nonsmoking children of smokers are more likely to contract bronchitis. 
B) Smokers are more likely to have diminished lung capacity. 
C) Nonsmoking spouses of smokers have a 30% lower risk of heart attack. 
D) Nonsmoking children of smokers are less likely to develop atherosclerosis.

Question 18

Alveoli:

Accepted Answer

A) have a moist surface. 
B) are thick-walled. 
C) are not permeable to dissolved O2. 
D) are found in gills. 
E) are directly attached to the tracheae. 
A) have a moist surface. 
B) are thick-walled. 
C) are not permeable to dissolved O2. 
D) are found in gills. 
E) are directly attached to the tracheae.

Question 19

Imagine that a patient is admitted to the hospital after falling from the second-story window of her apartment. Tests reveal no injuries other than some swelling in the brain. Why, then, would her breathing become irregular?

Accepted Answer

A) Her tissues require more oxygen for healing. 
B) The blood returning to the lungs from the brain is too high in oxygen. 
C) The respiratory center in the lungs is malfunctioning due to a lack of carbon dioxide. 
D) The damage to the brain is affecting the respiratory center in the medulla. 
E) Her swollen brain is causing a decrease in blood pressure. 
A) Her tissues require more oxygen for healing. 
B) The blood returning to the lungs from the brain is too high in oxygen. 
C) The respiratory center in the lungs is malfunctioning due to a lack of carbon dioxide. 
D) The damage to the brain is affecting the respiratory center in the medulla. 
E) Her swollen brain is causing a decrease in blood pressure.

Question 20

Why do people who have experienced carbon monoxide poisoning tend to look healthy at first glance?

Accepted Answer

A) Their breathing is normal. 
B) Carbon monoxide works slowly. 
C) They are able to use some carbon monoxide in cellular respiration. 
D) Carbon monoxide is a brain stimulant. 
E) Their skin and lips are bright red. 
A) Their breathing is normal. 
B) Carbon monoxide works slowly. 
C) They are able to use some carbon monoxide in cellular respiration. 
D) Carbon monoxide is a brain stimulant. 
E) Their skin and lips are bright red.

Exam 33: Respiration

In the lungs, ________ diffuses into the bloodstream where it is in low concentration, and ________ diffuses from the bloodstream into the lungs.

Sea jellies lack a circulatory system because:

Movement of O2 from the outside air to respiratory surfaces by breathing is an example of:

For smokers who quit smoking, when does healing begin?

All of the following are respiratory surfaces EXCEPT:

What happens during inhalation?

Closed air sacs in which gas exchange occurs in mammals are called;

During inhalation, the diaphragm:

How are cellular respiration and respiratory systems related?

When a cell is respiring, carbon dioxide is in ________ concentration inside the cell, causing it to diffuse out, whereas ________ is in high concentration outside the cell, causing it to diffuse in.

What structures make up the large surface area for gas exchange in fish?

Most of the carbon dioxide released from cells is transported as:

Hemoglobin is a respiratory protein. Its function is to:

As shown in this figure, blood flow and water flow are:

What are spiracles?

Which of the following is one consequence of passive smoking?

Alveoli:

Imagine that a patient is admitted to the hospital after falling from the second-story window of her apartment. Tests reveal no injuries other than some swelling in the brain. Why, then, would her breathing become irregular?

Why do people who have experienced carbon monoxide poisoning tend to look healthy at first glance?

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

The Continuity of Life: Cellular Reproduction

Patterns of Inheritance

Dna: the Molecule of Heredity

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amidst Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity Ii: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

How Do Ecosystems Work

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Circulation

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

Filters

In the lungs, diffuses into the bloodstream where it is in low concentration, and diffuses from the bloodstream into the lungs.

When a cell is respiring, carbon dioxide is in concentration inside the cell, causing it to diffuse out, whereas is in high concentration outside the cell, causing it to diffuse in.