Essentials of Human Anatomy & Physiology Laboratory Manual (7th Edition)
Essentials of Human Anatomy & Physiology Laboratory Manual (7th Edition)
7th Edition
ISBN: 9780134424835
Author: Elaine N. Marieb, Pamela B. Jackson
Publisher: PEARSON
Question
Book Icon
Chapter 2, Problem 1MC
Summary Introduction

Introduction:

The building blocks of all the elements present in the universe are known as atoms, which are invisible to the naked eye. An atom, in turn, is composed of much smaller particles known as subatomic particles. The atom is divided into two main regions, including nucleus and a peripheral region. The subatomic particles, electrons, protons, and neutrons, are distributed in these two regions inside the atom.

Expert Solution & Answer
Check Mark

Answer to Problem 1MC

Correct answer:

The nucleus containing the subatomic particles determines the mass of the atom. These subatomic particles determine the atomic number of the atom.

Explanation of Solution

Explanation for correct answers:

Option (a) is given that the atomic nucleus contains the atom’s mass. The nucleus contains the neutrons and protons, which hold the majority portion of the weight of the atom. The negatively charged electrons that move around the nucleus in their respective orbitals are nearly massless. Hence, option (a) is correct.

Option (c) is given that the subatomic particles can be ejected from the nucleus. Two forces work within an atom: electromagnetic forces between the positively charged protons and negatively charged electrons and nuclear forces between the protons and neutrons. The nuclear forces are stronger than the electromagnetic forces, which leads to the confinement of the nucleons (protons and neutrons) within the nucleus. In case the electromagnetic forces exceed the nuclear forces, the nucleons can be ejected from the nucleus. Hence, option (c) is correct.

Option (d) is given that the atomic number is determined by the subatomic particles contained within the nucleus. The atomic number is denoted by the number of protons present within the nucleus, which is unique for each element. Hence, option (d) is correct.

Explanation for incorrect answers:

Option (b) is given that the negatively charged subatomic particles are present in the nucleus. The electrons that carry the negative charge move around the nucleus in fixed orbits. The number of protons is equal to the number of electrons present in the nucleus. So, it is an incorrect option.

Option (e) is given that the subatomic particles present within the nucleus interact with other atoms. The protons that are present within the nucleus are confined in their region and do not leave the nucleus unless there are strong nuclear forces. The electrons are mainly responsible for the interaction with other atoms by either sharing or transferring electrons. So, it is an incorrect option.

Hence, options (b) and (e) are incorrect.

Conclusion

Thus, the nucleus having the protons along with the neutrons makes up the mass of the atom. These subatomic particles can also be ejected from the nucleus under certain circumstances, which ultimately leads to the decay of the atom. The atomic number depends on the number of protons present within the nucleus.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
19. On the diagram below a. Label the three pictures as: DNA; polypeptide; or RNA. b. Label the arrows as: translation or transcription/RNA processing. c. Add the following details to the diagram. Promoter region TATA box Transcription start site Transcription terminator Intron (A,B,C,D) Exons (1,2,3,4,5) Splice sites 5' cap 5' UTR (untranslated region) 3' poly A tail 3' UTR (untranslated region) Translational start (AUG) Translational stop (UGA, UAG, or UAA) N and C ends of polypeptide 0000
Match the letter labels in the figure below to the terms. Some letter labels are not used. MNNNNNNIN M C B A M D F E H K G 8
The diagram below illustrates a quorum sensing pathway from Staphylococcus aureus. Please answer the following questions. 1. Autoinduction is part of the quorum sensing system. Which promoter (P2 or P3) is critical for autoinduction? 2)This staphylococcus aureus grows on human wounds, causing severe infections. You would like to start a clinical trial to treat these wound infections. Please describe: a) What molecule do you recommend for the trial. Why? b) Your trial requires that Staphylococcus aureus be isolated from the wound and submitted to genome sequencing before admittance. Why? What are you testing for?  3) If a mutation arises where the Promoter P3 is constitutively active, how would that influence sensitivity to AIP? Please explain your rationale. 4) This pathway is sensitive to bacterial cell density. Describe two separate mutation that would render the pathway active independent of cell density. Briefly explain your rationale. Mutation 1 Mutation 2

Chapter 2 Solutions

Essentials of Human Anatomy & Physiology Laboratory Manual (7th Edition)

Knowledge Booster
Background pattern image
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Principles Of Radiographic Imaging: An Art And A ...
Health & Nutrition
ISBN:9781337711067
Author:Richard R. Carlton, Arlene M. Adler, Vesna Balac
Publisher:Cengage Learning
Text book image
Biology Today and Tomorrow without Physiology (Mi...
Biology
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Text book image
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Text book image
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Biology
ISBN:9781305967359
Author:STARR
Publisher:CENGAGE L
Text book image
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
Text book image
Aquaculture Science
Biology
ISBN:9781133558347
Author:Parker
Publisher:Cengage