Archaea a. are most genetically related to bacteria. b. contain a nucleus. c. cannot cause disease in humans. d. lack peptidoglycan in their cell walls.

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Answer 1

Textbook Question

Chapter 3, Problem 1Q

Archaea

a. are most genetically related to bacteria.
b. contain a nucleus.
c. cannot cause disease in humans.
d. lack peptidoglycan in their cell walls.

Expert Solution & Answer

Summary Introduction

Introduction:

The domain classification consists of prokaryotes, eukaryotes, and archaea. The prokaryotes include the group of bacteria which are unicellular organisms, without a nucleus and chromosomes condensed in the cytoplasm. Archaea include the group of ancient bacteria. The domain eukaryotes include protists, fungi, Plantae, and animalia.

Answer to Problem 1Q

Correct answer:

Archaea lack peptidoglycan in their cell walls. Therefore, option (d) is correct.

Option (d) is given as “lack peptidoglycan in their cell walls”.

Explanation of Solution

Justify the reasons for the correct statement:

Archaea contains single and circular chromosomes. Ribosomes are the 70S, but their structure is similar to 80S. Nucleus and membrane-bound organelles are absent but have a bacterial-like metabolism. The peptidoglycans and cell wall are absent in archaea, but theseare present in bacteria.

Hence, option (d) is correct.

Justify the reasons for the incorrect statements:

Option (a) is given as “are most genetically related to bacteria”.

Archaea are genetically related to bacteria. Archaea initially are defined as archaebacteria. Hence, it is a wrong answer.

Option (b) is given as “contain a nucleus”.

Both archaea and bacteria are unicellular organisms and contain do not contain a nucleus. Hence, it is a wrong answer.

Option (c) is given as “cannot cause disease in humans”.

Both bacteria and archaea can be opportunistic pathogens and cause disease in humans. Hence, it is a wrong answer.

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

Conclusion

It was once thought that bacteria and archaea belonged to the prokaryotic domain and similar to bacteria, but later they showed some distinctive difference in their cell wall and ribosomes.

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Answer 2

Textbook Question

Chapter 3, Problem 1Q

Archaea

a. are most genetically related to bacteria.
b. contain a nucleus.
c. cannot cause disease in humans.
d. lack peptidoglycan in their cell walls.

Expert Solution & Answer

Summary Introduction

Introduction:

The domain classification consists of prokaryotes, eukaryotes, and archaea. The prokaryotes include the group of bacteria which are unicellular organisms, without a nucleus and chromosomes condensed in the cytoplasm. Archaea include the group of ancient bacteria. The domain eukaryotes include protists, fungi, Plantae, and animalia.

Answer to Problem 1Q

Correct answer:

Archaea lack peptidoglycan in their cell walls. Therefore, option (d) is correct.

Option (d) is given as “lack peptidoglycan in their cell walls”.

Explanation of Solution

Justify the reasons for the correct statement:

Archaea contains single and circular chromosomes. Ribosomes are the 70S, but their structure is similar to 80S. Nucleus and membrane-bound organelles are absent but have a bacterial-like metabolism. The peptidoglycans and cell wall are absent in archaea, but theseare present in bacteria.

Hence, option (d) is correct.

Justify the reasons for the incorrect statements:

Option (a) is given as “are most genetically related to bacteria”.

Archaea are genetically related to bacteria. Archaea initially are defined as archaebacteria. Hence, it is a wrong answer.

Option (b) is given as “contain a nucleus”.

Both archaea and bacteria are unicellular organisms and contain do not contain a nucleus. Hence, it is a wrong answer.

Option (c) is given as “cannot cause disease in humans”.

Both bacteria and archaea can be opportunistic pathogens and cause disease in humans. Hence, it is a wrong answer.

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

Conclusion

It was once thought that bacteria and archaea belonged to the prokaryotic domain and similar to bacteria, but later they showed some distinctive difference in their cell wall and ribosomes.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 3

Textbook Question

Chapter 3, Problem 1Q

Archaea

a. are most genetically related to bacteria.
b. contain a nucleus.
c. cannot cause disease in humans.
d. lack peptidoglycan in their cell walls.

Expert Solution & Answer

Summary Introduction

Introduction:

The domain classification consists of prokaryotes, eukaryotes, and archaea. The prokaryotes include the group of bacteria which are unicellular organisms, without a nucleus and chromosomes condensed in the cytoplasm. Archaea include the group of ancient bacteria. The domain eukaryotes include protists, fungi, Plantae, and animalia.

Answer to Problem 1Q

Correct answer:

Archaea lack peptidoglycan in their cell walls. Therefore, option (d) is correct.

Option (d) is given as “lack peptidoglycan in their cell walls”.

Explanation of Solution

Justify the reasons for the correct statement:

Archaea contains single and circular chromosomes. Ribosomes are the 70S, but their structure is similar to 80S. Nucleus and membrane-bound organelles are absent but have a bacterial-like metabolism. The peptidoglycans and cell wall are absent in archaea, but theseare present in bacteria.

Hence, option (d) is correct.

Justify the reasons for the incorrect statements:

Option (a) is given as “are most genetically related to bacteria”.

Archaea are genetically related to bacteria. Archaea initially are defined as archaebacteria. Hence, it is a wrong answer.

Option (b) is given as “contain a nucleus”.

Both archaea and bacteria are unicellular organisms and contain do not contain a nucleus. Hence, it is a wrong answer.

Option (c) is given as “cannot cause disease in humans”.

Both bacteria and archaea can be opportunistic pathogens and cause disease in humans. Hence, it is a wrong answer.

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

Conclusion

It was once thought that bacteria and archaea belonged to the prokaryotic domain and similar to bacteria, but later they showed some distinctive difference in their cell wall and ribosomes.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Textbook Question

Chapter 3, Problem 1Q

Archaea

a. are most genetically related to bacteria.
b. contain a nucleus.
c. cannot cause disease in humans.
d. lack peptidoglycan in their cell walls.

Expert Solution & Answer

Summary Introduction

Introduction:

The domain classification consists of prokaryotes, eukaryotes, and archaea. The prokaryotes include the group of bacteria which are unicellular organisms, without a nucleus and chromosomes condensed in the cytoplasm. Archaea include the group of ancient bacteria. The domain eukaryotes include protists, fungi, Plantae, and animalia.

Answer to Problem 1Q

Correct answer:

Archaea lack peptidoglycan in their cell walls. Therefore, option (d) is correct.

Option (d) is given as “lack peptidoglycan in their cell walls”.

Explanation of Solution

Justify the reasons for the correct statement:

Archaea contains single and circular chromosomes. Ribosomes are the 70S, but their structure is similar to 80S. Nucleus and membrane-bound organelles are absent but have a bacterial-like metabolism. The peptidoglycans and cell wall are absent in archaea, but theseare present in bacteria.

Hence, option (d) is correct.

Justify the reasons for the incorrect statements:

Option (a) is given as “are most genetically related to bacteria”.

Archaea are genetically related to bacteria. Archaea initially are defined as archaebacteria. Hence, it is a wrong answer.

Option (b) is given as “contain a nucleus”.

Both archaea and bacteria are unicellular organisms and contain do not contain a nucleus. Hence, it is a wrong answer.

Option (c) is given as “cannot cause disease in humans”.

Both bacteria and archaea can be opportunistic pathogens and cause disease in humans. Hence, it is a wrong answer.

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

Conclusion

It was once thought that bacteria and archaea belonged to the prokaryotic domain and similar to bacteria, but later they showed some distinctive difference in their cell wall and ribosomes.

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!

Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

Expert Solution & Answer

Summary Introduction

Introduction:

The domain classification consists of prokaryotes, eukaryotes, and archaea. The prokaryotes include the group of bacteria which are unicellular organisms, without a nucleus and chromosomes condensed in the cytoplasm. Archaea include the group of ancient bacteria. The domain eukaryotes include protists, fungi, Plantae, and animalia.

Answer to Problem 1Q

Correct answer:

Archaea lack peptidoglycan in their cell walls. Therefore, option (d) is correct.

Option (d) is given as “lack peptidoglycan in their cell walls”.

Explanation of Solution

Justify the reasons for the correct statement:

Archaea contains single and circular chromosomes. Ribosomes are the 70S, but their structure is similar to 80S. Nucleus and membrane-bound organelles are absent but have a bacterial-like metabolism. The peptidoglycans and cell wall are absent in archaea, but theseare present in bacteria.

Hence, option (d) is correct.

Justify the reasons for the incorrect statements:

Option (a) is given as “are most genetically related to bacteria”.

Archaea are genetically related to bacteria. Archaea initially are defined as archaebacteria. Hence, it is a wrong answer.

Option (b) is given as “contain a nucleus”.

Both archaea and bacteria are unicellular organisms and contain do not contain a nucleus. Hence, it is a wrong answer.

Option (c) is given as “cannot cause disease in humans”.

Both bacteria and archaea can be opportunistic pathogens and cause disease in humans. Hence, it is a wrong answer.

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

Conclusion

It was once thought that bacteria and archaea belonged to the prokaryotic domain and similar to bacteria, but later they showed some distinctive difference in their cell wall and ribosomes.

Answer 8

Expert Solution & Answer

Summary Introduction

Introduction:

The domain classification consists of prokaryotes, eukaryotes, and archaea. The prokaryotes include the group of bacteria which are unicellular organisms, without a nucleus and chromosomes condensed in the cytoplasm. Archaea include the group of ancient bacteria. The domain eukaryotes include protists, fungi, Plantae, and animalia.

Answer to Problem 1Q

Correct answer:

Archaea lack peptidoglycan in their cell walls. Therefore, option (d) is correct.

Option (d) is given as “lack peptidoglycan in their cell walls”.

Explanation of Solution

Justify the reasons for the correct statement:

Archaea contains single and circular chromosomes. Ribosomes are the 70S, but their structure is similar to 80S. Nucleus and membrane-bound organelles are absent but have a bacterial-like metabolism. The peptidoglycans and cell wall are absent in archaea, but theseare present in bacteria.

Hence, option (d) is correct.

Justify the reasons for the incorrect statements:

Option (a) is given as “are most genetically related to bacteria”.

Archaea are genetically related to bacteria. Archaea initially are defined as archaebacteria. Hence, it is a wrong answer.

Option (b) is given as “contain a nucleus”.

Both archaea and bacteria are unicellular organisms and contain do not contain a nucleus. Hence, it is a wrong answer.

Option (c) is given as “cannot cause disease in humans”.

Both bacteria and archaea can be opportunistic pathogens and cause disease in humans. Hence, it is a wrong answer.

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

Conclusion

It was once thought that bacteria and archaea belonged to the prokaryotic domain and similar to bacteria, but later they showed some distinctive difference in their cell wall and ribosomes.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Summary Introduction

Introduction:

The domain classification consists of prokaryotes, eukaryotes, and archaea. The prokaryotes include the group of bacteria which are unicellular organisms, without a nucleus and chromosomes condensed in the cytoplasm. Archaea include the group of ancient bacteria. The domain eukaryotes include protists, fungi, Plantae, and animalia.

Answer 12

Answer to Problem 1Q

Correct answer:

Archaea lack peptidoglycan in their cell walls. Therefore, option (d) is correct.

Option (d) is given as “lack peptidoglycan in their cell walls”.

Answer 13

Explanation of Solution

Justify the reasons for the correct statement:

Archaea contains single and circular chromosomes. Ribosomes are the 70S, but their structure is similar to 80S. Nucleus and membrane-bound organelles are absent but have a bacterial-like metabolism. The peptidoglycans and cell wall are absent in archaea, but theseare present in bacteria.

Hence, option (d) is correct.

Justify the reasons for the incorrect statements:

Option (a) is given as “are most genetically related to bacteria”.

Archaea are genetically related to bacteria. Archaea initially are defined as archaebacteria. Hence, it is a wrong answer.

Option (b) is given as “contain a nucleus”.

Both archaea and bacteria are unicellular organisms and contain do not contain a nucleus. Hence, it is a wrong answer.

Option (c) is given as “cannot cause disease in humans”.

Both bacteria and archaea can be opportunistic pathogens and cause disease in humans. Hence, it is a wrong answer.

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

Answer 14

Conclusion

It was once thought that bacteria and archaea belonged to the prokaryotic domain and similar to bacteria, but later they showed some distinctive difference in their cell wall and ribosomes.

Answer 15

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Archaea a. are most genetically related to bacteria. b. contain a nucleus. c. cannot cause disease in humans. d. lack peptidoglycan in their cell walls.

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Answer to Problem 1Q

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