The evidence that mitochondria and chloroplasts descended from simpler cells engulfed long ago. Concept introduction: Endosymbiont theory proposes that both mitochondria and chloroplasts were once free-living bacteria that were engulfed by ancient bacteria. The aerobic bacteria became mitochondria of the today’s eukaryotic cells while the photosynthetic cyanobacteria became chloroplasts of today’s plant cells.

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Answer 1

Question

Chapter 15.2, Problem 2MC

Summary Introduction

To determine:

The evidence that mitochondria and chloroplasts descended from simpler cells engulfed long ago.

Concept introduction:

Endosymbiont theory proposes that both mitochondria and chloroplasts were once free-living bacteria that were engulfed by ancient bacteria. The aerobic bacteria became mitochondria of the today’s eukaryotic cells while the photosynthetic cyanobacteria became chloroplasts of today’s plant cells.

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Students have asked these similar questions

Scientists explain the existence of mitochondria and chloroplasts with the endosymbiotic hypothesis. What is the endosymbiotic hypothesis? Give two pieces of evidence for it.

How do scientists know that mitochondria and chloroplasts were likely once free-living prokaryotes? What theory is explained by this evidence?

If mitochondria originated as proteobacteria and chloroplasts are descended from cyanobacteria, where does the rest of the eukaryotic cell come from?

Answer 2

Question

Chapter 15.2, Problem 2MC

Summary Introduction

To determine:

The evidence that mitochondria and chloroplasts descended from simpler cells engulfed long ago.

Concept introduction:

Endosymbiont theory proposes that both mitochondria and chloroplasts were once free-living bacteria that were engulfed by ancient bacteria. The aerobic bacteria became mitochondria of the today’s eukaryotic cells while the photosynthetic cyanobacteria became chloroplasts of today’s plant cells.

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Answer 3

Question

Chapter 15.2, Problem 2MC

Summary Introduction

To determine:

The evidence that mitochondria and chloroplasts descended from simpler cells engulfed long ago.

Concept introduction:

Endosymbiont theory proposes that both mitochondria and chloroplasts were once free-living bacteria that were engulfed by ancient bacteria. The aerobic bacteria became mitochondria of the today’s eukaryotic cells while the photosynthetic cyanobacteria became chloroplasts of today’s plant cells.

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Answer 4

Question

Chapter 15.2, Problem 2MC

Summary Introduction

To determine:

The evidence that mitochondria and chloroplasts descended from simpler cells engulfed long ago.

Concept introduction:

Endosymbiont theory proposes that both mitochondria and chloroplasts were once free-living bacteria that were engulfed by ancient bacteria. The aerobic bacteria became mitochondria of the today’s eukaryotic cells while the photosynthetic cyanobacteria became chloroplasts of today’s plant cells.

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Answer 5

Chapter 15.2, Problem 2MC

Summary Introduction

To determine:

The evidence that mitochondria and chloroplasts descended from simpler cells engulfed long ago.

Concept introduction:

Endosymbiont theory proposes that both mitochondria and chloroplasts were once free-living bacteria that were engulfed by ancient bacteria. The aerobic bacteria became mitochondria of the today’s eukaryotic cells while the photosynthetic cyanobacteria became chloroplasts of today’s plant cells.

Answer 6

Chapter 15.2, Problem 2MC

Summary Introduction

To determine:

The evidence that mitochondria and chloroplasts descended from simpler cells engulfed long ago.

Concept introduction:

Endosymbiont theory proposes that both mitochondria and chloroplasts were once free-living bacteria that were engulfed by ancient bacteria. The aerobic bacteria became mitochondria of the today’s eukaryotic cells while the photosynthetic cyanobacteria became chloroplasts of today’s plant cells.

Answer 7

Chapter 15.2, Problem 2MC

Summary Introduction

To determine:

The evidence that mitochondria and chloroplasts descended from simpler cells engulfed long ago.

Concept introduction:

Endosymbiont theory proposes that both mitochondria and chloroplasts were once free-living bacteria that were engulfed by ancient bacteria. The aerobic bacteria became mitochondria of the today’s eukaryotic cells while the photosynthetic cyanobacteria became chloroplasts of today’s plant cells.

Answer 8

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Answer 9

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Answer 11

Ch. 15.1 - How were conditions on Earth before life began...Ch. 15.1 - Prob. 2MC Ch. 15.1 - Prob. 3MC Ch. 15.1 - Prob. 4MC Ch. 15.2 - How might the endoplasmic reticulum, nuclear...Ch. 15.2 - Prob. 2MC Ch. 15.2 - Prob. 3MC Ch. 15.3 - Prob. 1MC Ch. 15.3 - What types of organisms flourished in the...Ch. 15.3 - How did Palaeozoic life diversify during the...

Solution Summary: The author analyzes the evidence that mitochondria and chloroplasts descended from simpler cells engulfed long ago.

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