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One property that distinguishes cells in domain Bacteria from those in domain Eukarya is the presence of
| a. a cell wall |
| b. DNA |
| c. flagella |
| d. membranous organelles |
Introduction:
Life is divided into three domains known as Bacteria, Archaea, and Eukarya. Bacteria and Archaea are present the prokaryotes, which translates to the simplest and most ancient forms of life, whose cells lack a nucleus. The kingdom Eukarya belongs to eukaryotes.
Answer to Problem 1MCQ
Correct answer:
One property that distinguishes cells in domain Bacteria from those in domain Eukarya is the presence of membranous organelles. Hence, the correct answer is option d.
Explanation of Solution
Reason for correct answer:
Option d. is given as,“membranous organelles.”
The members domain bacteria do not contain membrane-bound organelles such as the nucleus, mitochondria, or chloroplast. On the contrary, the domain Eukarya is characterized by the presence of nucleus and membrane-bound organelles. This property distinguishes bacteria from eukaryotes. Hence, option d. is correct.
Reason for incorrect answer:
Option a. is given as, “a cell wall.”
The cell wall is present in both the domains of Bacteria and Eukarya. Bacterial cell wall is made up of peptidoglycan and helps in maintaining the shape of the cell. Cell wall is absent in animal cells. Cell wall in eukaryotes such as fungi is made up of chitin that provides structural support and protection to the cell. Hence, option a. is incorrect.
Option b. is given as, “DNA.”
DNA is present in both Bacteria and Eukarya. Bacterial DNA is present in the form of nucleoid. Eukaryotic cells have mitochondrial DNA and nuclear DNA which functions as the source of genetic information. Hence, option b. is incorrect.
Option c. is given as, “flagella.”
Flagella aids in the movement of cells, and it is present in the domains of Bacteria and Eukarya. Hence, option c. is incorrect.
Hence, the options a., b., and c. are incorrect.
The presence of membranous organelles distinguishes the members of domain Bacteria from the members of domain Eukarya. Thus, the correct answer is option d.
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Chapter 3 Solutions
BIOLOGY:THE ESSENTIALS (LL) W/CONNECT
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- Which one of the following is never found in prokaryotic cells? Select one: O a. Capsule O b. Flagella O c. Ribosomes O d. Ciliaarrow_forwardAll of the following are characteristics of the bacterial flagellum except: Select one: a. It has a hook-like insertion to a basal body in the cell wall. b. It is composed of protein c. It is used in conjugation d. Counterclockwise rotation moves bacteria forward All the following are characteristics of prokaryotes except: Select one: a. Prokaryotes have cell wall b. Prokaryotes have ribosomes c . Prokaryotes have organelles d. Prokaryotes lack a nucleus e. Prokaryotes have genesarrow_forwardCompare and contrast the structure and function of the following among bacteria and eukaryotes: a. ribosome b. flagellum c. glycocalyxarrow_forward
- Which of the following is not found in all bacterial cells?a. cytoplasmic membrane b. a nucleoidc. ribosomesd. actin-like cytoskeletonarrow_forwardWhich one of the following is not a characteristic of all prokaryotes (Archea and Bacteria)? A. no nucleus B. smaller ribosomes than (most) of eukaryotes ribosomes C. existed before eukaryotic cells D. Contain some organelles like mitochondriaarrow_forwardDescribe how the size of prokaryotic cells compares to that of eukaryotic cells. A. they are about the same size B. prokaryotic cells are larger than eukaryotic cells C. eukaryotic cells are larger than prokaryotic cellsarrow_forward
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