Microorganisms are considered as the major fraction of Earth’s biomass that evolved about billions of years ago. The prokaryotes are considered as the oldest form of lives that are first evolved on the earth about 4.6 billion years ago. The three domains of life exist today are Archaea , Bacteria , and Eukarya .

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Answer 1

Question

Chapter 15, Problem 1TQ

Summary Introduction

Microorganisms are considered as the major fraction of Earth’s biomass that evolved about billions of years ago. The prokaryotes are considered as the oldest form of lives that are first evolved on the earth about 4.6 billion years ago. The three domains of life exist today are Archaea, Bacteria, and Eukarya.

Expert Solution & Answer

Answer to Problem 1TQ

Prokaryotes are single-celled organisms that include both bacteria and archaea.

Therefore, option (d) is correct.

Explanation of Solution

Justify the reasons for the correct statement:

Archaea and Bacteria are considered as the single-celled or unicellular prokaryotic organisms with a single loop of a DNA molecule floating freely in the cell cytoplasm. They are small in size of about 1 to 10 µm and they do not have any membrane enclosed organelles.

Option (d) is given as, “both a and b”.

Hence, the option (d) is correct.

Justify the reasons for the incorrect statements:

Option (a) is given as, “archaeans”.

Archaea is a group of single-celled prokaryotic organisms, which are initially classified into bacteria. Not only archaea, the domain bacteria are also denoted as prokaryotes. Hence, it is a wrong answer.

Option (b) is given as, “bacteria”.

The bacteria are single-celled microorganism denoted as prokaryotes. However, the domain Archaea are also considered as prokaryotic organisms as they display many significant characteristics of bacteria. Hence, it is a wrong answer.

Option (c) is given as, “fungi”.

Fungi are multicellular organism and belonged to the domain Eukarya. It consist of a nucleus and membrane bound organelles. Hence, it is a wrong answer.

Option (e) is given as, “both b and c”.

Bacteria is a unicellular prokaryote and fungi is a multi-celled eukaryotic organism. Both are different from each other. Hence, it is a wrong answer.

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

Conclusion

The domain Archaea and Bacteria are considered as the single-celled or unicellular prokaryotes that have no nucleus.

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Question #3: In the KeyGene paper, the authors state that it would be useful if pollen from an apomict would transmit apomixis-inducing genes to the female in the cross (assuming the pollen is viable). Assuming there was just one gene conferring gametophytic obligate apomixis, and that the two parents are inbreds, what would be the consequences of such a cross if: a) The apomixis was a dominant trait? Indicate the genotypes and phenotypes (apomict or non- apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female first (left side) in the parental cross. b) The apomixis was a recessive trait? Indicate the genotypes and phenotypes (apomict or non- apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female first (left side) in the…

Question #5: Assume that two genes are identified that confer gametophytic facultative apomixis in soybean. The genes show independent assortment. Recessive alleles at both loci are required for the facultative apomixis. Facultative apomixis is triggered when the temperature at pollination is above 20 degrees C. At temperatures below 20 degrees C, all reproduction is sexual, independent of genotype. A facultative apomict male, capable of producing viable pollen, was crossed with a sexually reproducing female. Assuming the parents are completely inbred, what are the predicted phenotypic ratios (apomict: non-apomict) for the F1, F2, and DH (F1-derived) generations at each of the following temperatures*: a) 15°C? b) 25°C? *for full credit, show crosses and genotypes where appropriate. Remember to position the female first (left side) in the cross. Type your answer here:

Answer 2

Question

Chapter 15, Problem 1TQ

Summary Introduction

Microorganisms are considered as the major fraction of Earth’s biomass that evolved about billions of years ago. The prokaryotes are considered as the oldest form of lives that are first evolved on the earth about 4.6 billion years ago. The three domains of life exist today are Archaea, Bacteria, and Eukarya.

Expert Solution & Answer

Answer to Problem 1TQ

Prokaryotes are single-celled organisms that include both bacteria and archaea.

Therefore, option (d) is correct.

Explanation of Solution

Justify the reasons for the correct statement:

Archaea and Bacteria are considered as the single-celled or unicellular prokaryotic organisms with a single loop of a DNA molecule floating freely in the cell cytoplasm. They are small in size of about 1 to 10 µm and they do not have any membrane enclosed organelles.

Option (d) is given as, “both a and b”.

Hence, the option (d) is correct.

Justify the reasons for the incorrect statements:

Option (a) is given as, “archaeans”.

Archaea is a group of single-celled prokaryotic organisms, which are initially classified into bacteria. Not only archaea, the domain bacteria are also denoted as prokaryotes. Hence, it is a wrong answer.

Option (b) is given as, “bacteria”.

The bacteria are single-celled microorganism denoted as prokaryotes. However, the domain Archaea are also considered as prokaryotic organisms as they display many significant characteristics of bacteria. Hence, it is a wrong answer.

Option (c) is given as, “fungi”.

Fungi are multicellular organism and belonged to the domain Eukarya. It consist of a nucleus and membrane bound organelles. Hence, it is a wrong answer.

Option (e) is given as, “both b and c”.

Bacteria is a unicellular prokaryote and fungi is a multi-celled eukaryotic organism. Both are different from each other. Hence, it is a wrong answer.

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

Conclusion

The domain Archaea and Bacteria are considered as the single-celled or unicellular prokaryotes that have no nucleus.

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Answer 3

Question

Chapter 15, Problem 1TQ

Summary Introduction

Microorganisms are considered as the major fraction of Earth’s biomass that evolved about billions of years ago. The prokaryotes are considered as the oldest form of lives that are first evolved on the earth about 4.6 billion years ago. The three domains of life exist today are Archaea, Bacteria, and Eukarya.

Expert Solution & Answer

Answer to Problem 1TQ

Prokaryotes are single-celled organisms that include both bacteria and archaea.

Therefore, option (d) is correct.

Explanation of Solution

Justify the reasons for the correct statement:

Archaea and Bacteria are considered as the single-celled or unicellular prokaryotic organisms with a single loop of a DNA molecule floating freely in the cell cytoplasm. They are small in size of about 1 to 10 µm and they do not have any membrane enclosed organelles.

Option (d) is given as, “both a and b”.

Hence, the option (d) is correct.

Justify the reasons for the incorrect statements:

Option (a) is given as, “archaeans”.

Archaea is a group of single-celled prokaryotic organisms, which are initially classified into bacteria. Not only archaea, the domain bacteria are also denoted as prokaryotes. Hence, it is a wrong answer.

Option (b) is given as, “bacteria”.

The bacteria are single-celled microorganism denoted as prokaryotes. However, the domain Archaea are also considered as prokaryotic organisms as they display many significant characteristics of bacteria. Hence, it is a wrong answer.

Option (c) is given as, “fungi”.

Fungi are multicellular organism and belonged to the domain Eukarya. It consist of a nucleus and membrane bound organelles. Hence, it is a wrong answer.

Option (e) is given as, “both b and c”.

Bacteria is a unicellular prokaryote and fungi is a multi-celled eukaryotic organism. Both are different from each other. Hence, it is a wrong answer.

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

Conclusion

The domain Archaea and Bacteria are considered as the single-celled or unicellular prokaryotes that have no nucleus.

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Answer 4

Question

Chapter 15, Problem 1TQ

Summary Introduction

Microorganisms are considered as the major fraction of Earth’s biomass that evolved about billions of years ago. The prokaryotes are considered as the oldest form of lives that are first evolved on the earth about 4.6 billion years ago. The three domains of life exist today are Archaea, Bacteria, and Eukarya.

Expert Solution & Answer

Answer to Problem 1TQ

Prokaryotes are single-celled organisms that include both bacteria and archaea.

Therefore, option (d) is correct.

Explanation of Solution

Justify the reasons for the correct statement:

Archaea and Bacteria are considered as the single-celled or unicellular prokaryotic organisms with a single loop of a DNA molecule floating freely in the cell cytoplasm. They are small in size of about 1 to 10 µm and they do not have any membrane enclosed organelles.

Option (d) is given as, “both a and b”.

Hence, the option (d) is correct.

Justify the reasons for the incorrect statements:

Option (a) is given as, “archaeans”.

Archaea is a group of single-celled prokaryotic organisms, which are initially classified into bacteria. Not only archaea, the domain bacteria are also denoted as prokaryotes. Hence, it is a wrong answer.

Option (b) is given as, “bacteria”.

The bacteria are single-celled microorganism denoted as prokaryotes. However, the domain Archaea are also considered as prokaryotic organisms as they display many significant characteristics of bacteria. Hence, it is a wrong answer.

Option (c) is given as, “fungi”.

Fungi are multicellular organism and belonged to the domain Eukarya. It consist of a nucleus and membrane bound organelles. Hence, it is a wrong answer.

Option (e) is given as, “both b and c”.

Bacteria is a unicellular prokaryote and fungi is a multi-celled eukaryotic organism. Both are different from each other. Hence, it is a wrong answer.

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

Conclusion

The domain Archaea and Bacteria are considered as the single-celled or unicellular prokaryotes that have no nucleus.

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

Answer 5

Chapter 15, Problem 1TQ

Summary Introduction

Microorganisms are considered as the major fraction of Earth’s biomass that evolved about billions of years ago. The prokaryotes are considered as the oldest form of lives that are first evolved on the earth about 4.6 billion years ago. The three domains of life exist today are Archaea, Bacteria, and Eukarya.

Expert Solution & Answer

Answer to Problem 1TQ

Prokaryotes are single-celled organisms that include both bacteria and archaea.

Therefore, option (d) is correct.

Explanation of Solution

Justify the reasons for the correct statement:

Archaea and Bacteria are considered as the single-celled or unicellular prokaryotic organisms with a single loop of a DNA molecule floating freely in the cell cytoplasm. They are small in size of about 1 to 10 µm and they do not have any membrane enclosed organelles.

Option (d) is given as, “both a and b”.

Hence, the option (d) is correct.

Justify the reasons for the incorrect statements:

Option (a) is given as, “archaeans”.

Archaea is a group of single-celled prokaryotic organisms, which are initially classified into bacteria. Not only archaea, the domain bacteria are also denoted as prokaryotes. Hence, it is a wrong answer.

Option (b) is given as, “bacteria”.

The bacteria are single-celled microorganism denoted as prokaryotes. However, the domain Archaea are also considered as prokaryotic organisms as they display many significant characteristics of bacteria. Hence, it is a wrong answer.

Option (c) is given as, “fungi”.

Fungi are multicellular organism and belonged to the domain Eukarya. It consist of a nucleus and membrane bound organelles. Hence, it is a wrong answer.

Option (e) is given as, “both b and c”.

Bacteria is a unicellular prokaryote and fungi is a multi-celled eukaryotic organism. Both are different from each other. Hence, it is a wrong answer.

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

Conclusion

The domain Archaea and Bacteria are considered as the single-celled or unicellular prokaryotes that have no nucleus.

Answer 6

Chapter 15, Problem 1TQ

Summary Introduction

Microorganisms are considered as the major fraction of Earth’s biomass that evolved about billions of years ago. The prokaryotes are considered as the oldest form of lives that are first evolved on the earth about 4.6 billion years ago. The three domains of life exist today are Archaea, Bacteria, and Eukarya.

Expert Solution & Answer

Answer to Problem 1TQ

Prokaryotes are single-celled organisms that include both bacteria and archaea.

Therefore, option (d) is correct.

Explanation of Solution

Justify the reasons for the correct statement:

Archaea and Bacteria are considered as the single-celled or unicellular prokaryotic organisms with a single loop of a DNA molecule floating freely in the cell cytoplasm. They are small in size of about 1 to 10 µm and they do not have any membrane enclosed organelles.

Option (d) is given as, “both a and b”.

Hence, the option (d) is correct.

Justify the reasons for the incorrect statements:

Option (a) is given as, “archaeans”.

Archaea is a group of single-celled prokaryotic organisms, which are initially classified into bacteria. Not only archaea, the domain bacteria are also denoted as prokaryotes. Hence, it is a wrong answer.

Option (b) is given as, “bacteria”.

The bacteria are single-celled microorganism denoted as prokaryotes. However, the domain Archaea are also considered as prokaryotic organisms as they display many significant characteristics of bacteria. Hence, it is a wrong answer.

Option (c) is given as, “fungi”.

Fungi are multicellular organism and belonged to the domain Eukarya. It consist of a nucleus and membrane bound organelles. Hence, it is a wrong answer.

Option (e) is given as, “both b and c”.

Bacteria is a unicellular prokaryote and fungi is a multi-celled eukaryotic organism. Both are different from each other. Hence, it is a wrong answer.

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

Conclusion

The domain Archaea and Bacteria are considered as the single-celled or unicellular prokaryotes that have no nucleus.

Answer 7

Chapter 15, Problem 1TQ

Summary Introduction

Microorganisms are considered as the major fraction of Earth’s biomass that evolved about billions of years ago. The prokaryotes are considered as the oldest form of lives that are first evolved on the earth about 4.6 billion years ago. The three domains of life exist today are Archaea, Bacteria, and Eukarya.

Answer 8

Expert Solution & Answer

Answer to Problem 1TQ

Prokaryotes are single-celled organisms that include both bacteria and archaea.

Therefore, option (d) is correct.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Explanation of Solution

Justify the reasons for the correct statement:

Archaea and Bacteria are considered as the single-celled or unicellular prokaryotic organisms with a single loop of a DNA molecule floating freely in the cell cytoplasm. They are small in size of about 1 to 10 µm and they do not have any membrane enclosed organelles.

Option (d) is given as, “both a and b”.

Hence, the option (d) is correct.

Justify the reasons for the incorrect statements:

Option (a) is given as, “archaeans”.

Archaea is a group of single-celled prokaryotic organisms, which are initially classified into bacteria. Not only archaea, the domain bacteria are also denoted as prokaryotes. Hence, it is a wrong answer.

Option (b) is given as, “bacteria”.

The bacteria are single-celled microorganism denoted as prokaryotes. However, the domain Archaea are also considered as prokaryotic organisms as they display many significant characteristics of bacteria. Hence, it is a wrong answer.

Option (c) is given as, “fungi”.

Fungi are multicellular organism and belonged to the domain Eukarya. It consist of a nucleus and membrane bound organelles. Hence, it is a wrong answer.

Option (e) is given as, “both b and c”.

Bacteria is a unicellular prokaryote and fungi is a multi-celled eukaryotic organism. Both are different from each other. Hence, it is a wrong answer.

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