All present day cells have arisen by an uninterrupted series of cell divisions extending back in time to the first cell division. Strictly true or false. Introduction: The origin of life is explained with several concepts. One such concept is that an ancestral cell gave rise to all types of organisms irrespective of prokaryotes and eukaryotes.

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Answer 1

Question

Chapter 18, Problem 1Q

Summary Introduction

To explain: All present day cells have arisen by an uninterrupted series of cell divisions extending back in time to the first cell division. Strictly true or false.

Introduction: The origin of life is explained with several concepts. One such concept is that an ancestral cell gave rise to all types of organisms irrespective of prokaryotes and eukaryotes.

Expert Solution & Answer

Answer to Problem 1Q

Correct answer: The given statement is true.

Explanation of Solution

Several evidences indicate that all organisms came from a common ancestor. It is unlikely that the first cell that was formed became the founder cell for all the cells that are living currently. Evolution is a highly indirect process with focused development. So, there is a higher chance that several unsuccessful trials occurred and the cells replicated simultaneously. The ones that adapted to environmental conditions and competition survived and the others perished. Therefore, it can be hypothesized that one ancestral cell got fortunate enough that it got relatively adapted to the environment and stabilized itself. It is known that all cells arise from pre-existing cells. The first cell division is the division of the cell that got fortunate enough to escape the selection pressure. The cells that came thereafter went on with uninterrupted division. Some may have perished, but some continue with the cell division process. Hence, the statement is true.

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Students have asked these similar questions

You aim to test the hypothesis that the Tbx4 and Tbx5 genes inhibit each other's expression during limb development. With access to chicken embryos and viruses capable of overexpressing Tbx4 and Tbx5, describe an experiment to investigate whether these genes suppress each other's expression in the limb buds. What results would you expect if they do repress each other? What results would you expect if they do not repress each other?

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Answer 2

Question

Chapter 18, Problem 1Q

Summary Introduction

To explain: All present day cells have arisen by an uninterrupted series of cell divisions extending back in time to the first cell division. Strictly true or false.

Introduction: The origin of life is explained with several concepts. One such concept is that an ancestral cell gave rise to all types of organisms irrespective of prokaryotes and eukaryotes.

Expert Solution & Answer

Answer to Problem 1Q

Correct answer: The given statement is true.

Explanation of Solution

Several evidences indicate that all organisms came from a common ancestor. It is unlikely that the first cell that was formed became the founder cell for all the cells that are living currently. Evolution is a highly indirect process with focused development. So, there is a higher chance that several unsuccessful trials occurred and the cells replicated simultaneously. The ones that adapted to environmental conditions and competition survived and the others perished. Therefore, it can be hypothesized that one ancestral cell got fortunate enough that it got relatively adapted to the environment and stabilized itself. It is known that all cells arise from pre-existing cells. The first cell division is the division of the cell that got fortunate enough to escape the selection pressure. The cells that came thereafter went on with uninterrupted division. Some may have perished, but some continue with the cell division process. Hence, the statement is true.

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Answer 3

Question

Chapter 18, Problem 1Q

Summary Introduction

To explain: All present day cells have arisen by an uninterrupted series of cell divisions extending back in time to the first cell division. Strictly true or false.

Introduction: The origin of life is explained with several concepts. One such concept is that an ancestral cell gave rise to all types of organisms irrespective of prokaryotes and eukaryotes.

Expert Solution & Answer

Answer to Problem 1Q

Correct answer: The given statement is true.

Explanation of Solution

Several evidences indicate that all organisms came from a common ancestor. It is unlikely that the first cell that was formed became the founder cell for all the cells that are living currently. Evolution is a highly indirect process with focused development. So, there is a higher chance that several unsuccessful trials occurred and the cells replicated simultaneously. The ones that adapted to environmental conditions and competition survived and the others perished. Therefore, it can be hypothesized that one ancestral cell got fortunate enough that it got relatively adapted to the environment and stabilized itself. It is known that all cells arise from pre-existing cells. The first cell division is the division of the cell that got fortunate enough to escape the selection pressure. The cells that came thereafter went on with uninterrupted division. Some may have perished, but some continue with the cell division process. Hence, the statement is true.

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Answer 4

Question

Chapter 18, Problem 1Q

Summary Introduction

To explain: All present day cells have arisen by an uninterrupted series of cell divisions extending back in time to the first cell division. Strictly true or false.

Introduction: The origin of life is explained with several concepts. One such concept is that an ancestral cell gave rise to all types of organisms irrespective of prokaryotes and eukaryotes.

Expert Solution & Answer

Answer to Problem 1Q

Correct answer: The given statement is true.

Explanation of Solution

Several evidences indicate that all organisms came from a common ancestor. It is unlikely that the first cell that was formed became the founder cell for all the cells that are living currently. Evolution is a highly indirect process with focused development. So, there is a higher chance that several unsuccessful trials occurred and the cells replicated simultaneously. The ones that adapted to environmental conditions and competition survived and the others perished. Therefore, it can be hypothesized that one ancestral cell got fortunate enough that it got relatively adapted to the environment and stabilized itself. It is known that all cells arise from pre-existing cells. The first cell division is the division of the cell that got fortunate enough to escape the selection pressure. The cells that came thereafter went on with uninterrupted division. Some may have perished, but some continue with the cell division process. Hence, the statement is true.

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Answer 5

Chapter 18, Problem 1Q

Summary Introduction

To explain: All present day cells have arisen by an uninterrupted series of cell divisions extending back in time to the first cell division. Strictly true or false.

Introduction: The origin of life is explained with several concepts. One such concept is that an ancestral cell gave rise to all types of organisms irrespective of prokaryotes and eukaryotes.

Expert Solution & Answer

Answer to Problem 1Q

Correct answer: The given statement is true.

Explanation of Solution

Several evidences indicate that all organisms came from a common ancestor. It is unlikely that the first cell that was formed became the founder cell for all the cells that are living currently. Evolution is a highly indirect process with focused development. So, there is a higher chance that several unsuccessful trials occurred and the cells replicated simultaneously. The ones that adapted to environmental conditions and competition survived and the others perished. Therefore, it can be hypothesized that one ancestral cell got fortunate enough that it got relatively adapted to the environment and stabilized itself. It is known that all cells arise from pre-existing cells. The first cell division is the division of the cell that got fortunate enough to escape the selection pressure. The cells that came thereafter went on with uninterrupted division. Some may have perished, but some continue with the cell division process. Hence, the statement is true.

Answer 6

Chapter 18, Problem 1Q

Summary Introduction

To explain: All present day cells have arisen by an uninterrupted series of cell divisions extending back in time to the first cell division. Strictly true or false.

Introduction: The origin of life is explained with several concepts. One such concept is that an ancestral cell gave rise to all types of organisms irrespective of prokaryotes and eukaryotes.

Expert Solution & Answer

Answer to Problem 1Q

Correct answer: The given statement is true.

Explanation of Solution

Several evidences indicate that all organisms came from a common ancestor. It is unlikely that the first cell that was formed became the founder cell for all the cells that are living currently. Evolution is a highly indirect process with focused development. So, there is a higher chance that several unsuccessful trials occurred and the cells replicated simultaneously. The ones that adapted to environmental conditions and competition survived and the others perished. Therefore, it can be hypothesized that one ancestral cell got fortunate enough that it got relatively adapted to the environment and stabilized itself. It is known that all cells arise from pre-existing cells. The first cell division is the division of the cell that got fortunate enough to escape the selection pressure. The cells that came thereafter went on with uninterrupted division. Some may have perished, but some continue with the cell division process. Hence, the statement is true.

Answer 7

Chapter 18, Problem 1Q

Summary Introduction

To explain: All present day cells have arisen by an uninterrupted series of cell divisions extending back in time to the first cell division. Strictly true or false.

Introduction: The origin of life is explained with several concepts. One such concept is that an ancestral cell gave rise to all types of organisms irrespective of prokaryotes and eukaryotes.

Answer 8

Expert Solution & Answer

Answer to Problem 1Q

Correct answer: The given statement is true.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Explanation of Solution

Several evidences indicate that all organisms came from a common ancestor. It is unlikely that the first cell that was formed became the founder cell for all the cells that are living currently. Evolution is a highly indirect process with focused development. So, there is a higher chance that several unsuccessful trials occurred and the cells replicated simultaneously. The ones that adapted to environmental conditions and competition survived and the others perished. Therefore, it can be hypothesized that one ancestral cell got fortunate enough that it got relatively adapted to the environment and stabilized itself. It is known that all cells arise from pre-existing cells. The first cell division is the division of the cell that got fortunate enough to escape the selection pressure. The cells that came thereafter went on with uninterrupted division. Some may have perished, but some continue with the cell division process. Hence, the statement is true.

Answer 12

Ch. 18 - Prob. 1Q Ch. 18 - Prob. 2Q Ch. 18 - Prob. 3Q Ch. 18 - Prob. 4Q Ch. 18 - Prob. 5Q Ch. 18 - Prob. 6Q Ch. 18 - Prob. 7Q Ch. 18 - Prob. 8Q Ch. 18 - Prob. 9Q Ch. 18 - Prob. 10Q

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