EBK BIOLOGY
4th Edition
ISBN: 8220102797376
Author: BROOKER
Publisher: YUZU
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Textbook Question
Chapter 22, Problem 8TY
Which of the following explanations of multicellularity in eukaryotes is seen in the development of complex, multicellular organisms today?
- a. endosymbiosis
- b. aggregation of cells to form a colony
- c. division of cells followed by cell adhesion of the resulting cells
- d. multiple cell types aggregating to form a complex organism
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According to the theory of endosymbiosis, organelles, like mitochondria and chloroplasts, were once free-living cells that were absorbed into another cell. The relationship benefited both cells to stay together. What evidence do scientists observe today that supports the theory of endosymbiosis? Select all that apply.
a
There are ribosomes found inside mitochondria and chloroplasts just like there are inside cells.
b
Looking inside mitochondria and chloroplasts, one will find that they each contain their own DNA.
c
Mitochondria and chloroplasts are found inside all cell types.
d
Mitochondria and chloroplasts each have a membrane around them just like a cell would.
The endosymbiotic theory argues that prokaryotes become some of the organelles of early eukaryotic cells. All of the following support this hypothesis Except:
A. The mitochondria and chloroplasts have their own DNA and are nearly idential to some free-living prokaryotes
b. Mitochondria and chloroplasts are nearly idential to some free-living prokaryotes.
c. Mitochondria and chloroplasts have their own DNA
d. The vacuoles can come and go across the plasma membrane
Mitochondria are thought to be the descendants of certain alpha proteobacteria. They are, however, no longer able to lead independent lives because most genes originally present in their genome have moved to the nuclear genome. Which phenomenon accounts for the movement of these genes?
Group of answer choices
A. recombination
B. conjugation
C. translation
D. endosymbiosis
Chapter 22 Solutions
EBK BIOLOGY
Ch. 22.1 - Prob. 1CCCh. 22.1 - Prob. 2CCCh. 22.1 - Prob. 3CCCh. 22.1 - Look back at Figure 3.11. What is the...Ch. 22.1 - Prob. 4CCCh. 22.1 - Prob. 1EQCh. 22.1 - Prob. 2EQCh. 22.1 - Prob. 3EQCh. 22.2 - Prob. 1CCCh. 22.2 - Prob. 2CC
Ch. 22.3 - Prob. 1BCCh. 22.3 - Prob. 1CCCh. 22.3 - Prob. 2BCCh. 22 - Prob. 1TYCh. 22 - Prob. 2TYCh. 22 - Prob. 3TYCh. 22 - Prob. 4TYCh. 22 - Prob. 5TYCh. 22 - Prob. 6TYCh. 22 - The endosymbiosis hypothesis explaining the...Ch. 22 - Which of the following explanations of...Ch. 22 - Prob. 9TYCh. 22 - Which of the following statements regarding modern...Ch. 22 - Prob. 1CQCh. 22 - Prob. 2CQCh. 22 - Core Concept: Evolution Describe two examples in...Ch. 22 - Prob. 1COQCh. 22 - Prob. 2COQ
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