Textbook Question
Considering that water is a main component of the juices in the stomach and intestines, explain why digestion of lipids is more complicated than digestion of carbohydrates and proteins.
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Ch. 2 The Chemistry of Life
Amerman3rd EditionHuman Anatomy & PhysiologyISBN: 9780138247201, 9780138247928, 9780138201814
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Table of contents
- Ch. 1 Introduction to Anatomy and Physiology24
- Ch. 2 The Chemistry of Life37
- Ch. 3 The Cell54
- Ch. 4 Histology46
- Ch. 5 The Integumentary System30
- Ch. 6 Bones and Bone Tissue36
- Ch. 7 The Skeletal System40
- Ch. 8 Articulations19
- Ch. 9 The Muscular System35
- Ch. 10 Muscle Tissue and Physiology29
- Ch. 11 Introduction to the Nervous System and Nervous Tissue28
- Ch. 12 The Central Nervous System41
- Ch. 13 The Peripheral Nervous System41
- Ch. 14 The Autonomic Nervous System and Homeostasis31
- Ch. 15 The Special Senses39
- Ch. 16 The Endocrine System42
- Ch. 17 The Cardiovascular System I: The Heart28
- Ch. 18 The Cardiovascular System II: The Blood Vessels43
- Ch. 19 Blood32
- Ch. 20 The Lymphatic System and Immunity41
- Ch. 21 The Respiratory System27
- Ch. 22 The Digestive System27
- Ch. 23 Metabolism and Nutrition7
- Ch. 24 The Urinary System39
- Ch. 25 Fluid, Electrolyte, and Acid-Base Homeostasis39
- Ch. 26 The Reproductive System10
- Ch. 27 Development and Heredity5
Amerman3rd EditionHuman Anatomy & PhysiologyISBN: 9780138247201, 9780138247928, 9780138201814Not the one you use?Change textbook
Chapter 2, Problem L2.1
In certain types of radioactive decay, the isotope releases a particle called an alpha particle, which contains two protons and two neutrons. When this happens, is the product still the same element? Why or why not?
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Step 1: Begin by understanding what an alpha particle is. An alpha particle consists of two protons and two neutrons, which means it has a mass number of 4 and a charge of +2.
Step 2: Recognize that when an isotope undergoes alpha decay, it loses an alpha particle. This results in a decrease in the atomic number (number of protons) by 2 and the mass number (total number of protons and neutrons) by 4.
Step 3: Recall that the atomic number determines the identity of an element. If the atomic number changes, the element itself changes because the number of protons defines the element.
Step 4: Use the periodic table to confirm that a decrease in atomic number by 2 means the element shifts to a different position on the table, corresponding to a new element.
Step 5: Conclude that the product of alpha decay is not the same element as the original isotope because the loss of two protons changes the atomic number, thereby changing the element's identity.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Radioactive Decay
Radioactive decay is a process by which unstable atomic nuclei lose energy by emitting radiation. This can occur in various forms, including alpha decay, where an alpha particle (composed of two protons and two neutrons) is released. This process transforms the original element into a different element due to the loss of protons.
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Radioactive Isotopes
Alpha Particle
An alpha particle is a type of ionizing radiation consisting of two protons and two neutrons, essentially a helium nucleus. When an atom undergoes alpha decay, it emits this particle, resulting in a decrease in the atomic number of the original element by two. This change in atomic number is crucial for determining whether the product is the same element.
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Element Identity
The identity of an element is defined by its atomic number, which is the number of protons in its nucleus. When an element emits an alpha particle, it loses two protons, thus changing its atomic number and transforming it into a different element. Therefore, the product of alpha decay is not the same element as the original.
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Related Practice
Textbook Question
Explain how buffer systems in the body work if the pH of body fluids increases. Is this an example of a negative or a positive feedback loop? Explain.
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Textbook Question
Isotopes are atoms with the same ______ number but different ______ numbers.
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Textbook Question
Which of the following statements correctly describes a solution?
a. In a solution the solute is chemically dissolved by the solvent.
b. Solutions involve large particles suspended in another component.
c. The particles in a solution will settle out if left to sit.
d. The amount of solute in a solution is expressed as the solution's concentration.
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Textbook Question
Some claim that the pH of your blood can be affected by eating acidic foods such as citrus. Do you believe this to be true? Explain your answer. (Hint: What happens when extra hydrogen ions are added to the blood?)
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Textbook Question
Explain why monosaccharides are polar and fatty acids are nonpolar even though they both contain the same atoms.
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