EBK BIOLOGY
EBK BIOLOGY
11th Edition
ISBN: 9780134226453
Author: Byers
Publisher: PEARSON
bartleby

Concept explainers

bartleby

Videos

Textbook Question
Book Icon
Chapter 4, Problem 1MC

Which of the following is/are found only in prokaryotic cells?

a. plasmids

b. a cytoskeleton

c. mitochondria

d. ribosomes

Expert Solution & Answer
Check Mark
Summary Introduction

Introduction:

Prokaryotes are mostly single-celled organisms with a distinct cell wall for protection and a cell membrane that is involved in cell transport. These cells are less complex than a eukaryotic cell. A major difference is that prokaryotes do not have a discrete nucleus.

Answer to Problem 1MC

Correct answer:

Plasmids are found in prokaryotes only.

Explanation of Solution

Justification for the correct answer:

Option (a) is given that only prokaryotes contain plasmids. The plasmid is an extrachromosomal circular deoxyribonucleic acid (DNA) segment that contains essential genes that provide resistance to the organism against stressful conditions. This DNA material can be transferred to another cell during reproduction. The prokaryotic cell is very small in size and accommodating a single large chromosome is difficult, therefore these plasmids contain a lot of essential genes in addition to the DNA molecule. Hence, option (a) is correct.

Justification for incorrect answers:

Option (b) is given that the cytoskeleton is a part of the prokaryotic cell only. The cytoskeleton is present in all eukaryotic as well as prokaryotic cells. It is essential for providing a cell with its shape and cell movement. So, it is an incorrect option.

Option (c) is given that only prokaryotic cells have mitochondria. This is not true as these primitive cells lack in membrane-bound organelles. Mitochondria is an organelle used for producing energy in the cell. Instead of utilizing mitochondria, a prokaryotic cell makes the use of its cell membrane for aerobic respiration. So, it is an incorrect option.

Option (d) is given that ribosomes are unique to prokaryotes. All living cells have ribosomes as they help in the production of proteins which are important for life. The only difference is in the type of ribosomes in eukaryotes and prokaryotes. So, it is an incorrect option.

Hence, options (b), (c), and (d) are incorrect.

Conclusion

Thus, it can be concluded that only prokaryotes contain plasmids. Cytoskeleton and ribosomes are found in both eukaryotes and prokaryotes, while mitochondria are only found in eukaryotes.

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
Please answer q3
Respond to the following in a minimum of 175 words:  How might CRISPR-Cas 9 be used in research or, eventually, therapeutically in patients? What are some potential ethical issues associated with using this technology? Do the advantages of using this technology outweigh the disadvantages (or vice versa)? Explain your position.
You are studying the effect of directional selection on body height in three populations (graphs a, b, and c below). (a) What is the selection differential? Show your calculation. (2 pts) (b) Which population has the highest narrow sense heritability for height? Explain your answer. (2 pts) (c) If you examined the offspring in the next generation in each population, which population would have the highest mean height? Why? (2 pts) (a) Midoffspring height (average height of offspring) Short Short Short Short (c) Short (b) Short Tall Short Tall Short Short Tall Midparent height (average height of Mean of population = 65 inches Mean of breading parents = 70 inches Mean of population = 65 inches Mean of breading parents = 70 inches Mean of population = 65 inches Mean of breading parents = 70 inches
Knowledge Booster
Background pattern image
Biology
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Body Structures & Functions
Biology
ISBN:9781285695495
Author:Scott
Publisher:Cengage
Text book image
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Biology
ISBN:9781305967359
Author:STARR
Publisher:CENGAGE L
Text book image
Body Structures & Functions Updated
Biology
ISBN:9780357191606
Author:Scott
Publisher:Cengage
Text book image
Complete Textbook Of Phlebotomy
Biology
ISBN:9781337464314
Author:Hoeltke
Publisher:Cengage
Text book image
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Text book image
Comprehensive Medical Assisting: Administrative a...
Nursing
ISBN:9781305964792
Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy Correa
Publisher:Cengage Learning
Bacterial Structure and Functions; Author: Osmosis;https://www.youtube.com/watch?v=b15Hy3jCPDs;License: Standard youtube license