Biology: Concepts and Investigations
Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Chapter 3, Problem 1MCQ

One property that distinguishes cells in domain Eukarya from those in domain Bacteria is the presence of

a. a cell wall.

b. DNA.

c. flagella

d. membranous organelles.

Expert Solution & Answer
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Summary Introduction

Introduction:

The prokaryotes and eukaryotes are divided into three domains. The domain Eukarya consists of all the eukaryotes. All the eubacteria come under the domain Bacteria and domain Archaea consists of all the archaebacteria.

Answer to Problem 1MCQ

Correct answer:

Eukaryotes have membrane bound organelles whereas prokaryotes lacks it. Therefore, option d is correct.

Explanation of Solution

Reason for the correct statement:

In prokaryotes the organelles do not have membranes. Even the genetic material is just a single unbound chromosome called nucleoid. On the other hand eukaryotes have a membrane on all the organelles. Some organelles like the nucleus, mitochondria and chloroplast have a double membrane.

Option d. is given as “membranous organelles”.

As, “the property that distinguishes cells in domain Eukarya from those in domain Bacteria is the presence of membranous organelles”, is the right answer.

Hence, option d. is correct.

Reasons for the incorrect statements:

Option a. is given as “a cell wall”.

Bacteria as well as many eukaryotes like plants and fungi possess a cell wall. So, it is a wrong answer.

Option b. is given as “DNA”.

DNA is the genetic material of all the organisms except a few viruses, thus it is present in all the prokaryotes and eukaryotes. So, it is a wrong answer.

Option c. is given as “flagella”.

Bacteria have flagella and so do certain protists like Euglena. So, it is a wrong answer.

Hence, options a., b. and c. are incorrect.

Conclusion

The presence of membrane bound organelles in eukaryotes differentiates them from prokaryotes.

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Biology: Concepts and Investigations

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Prokaryotic vs. Eukaryotic Cells (Updated); Author: Amoeba Sisters;https://www.youtube.com/watch?v=Pxujitlv8wc;License: Standard youtube license