To analyze:
Why the development of the membrane system was an important phase in the origin of life.
Introduction:
The membrane system refers to the membrane bound organelles seen in all eukaryotic cells.
Answer to Problem 1SA
Correct answer:
Option (a): amino acids.
Explanation of Solution
The formation of the first membrane around chemical components lead to the formation of the first cells. This started life on earth. When membrane systems developed around cells, it allowed more complexity to come into life processes.
The different chemical components within cells began to be enclosed within lipid membranes. This created specialized structures called organelles.
The development of the cell membrane allowed the cell to regulate the molecules that could interact with the cell components, allowing access to required chemicals, while inhibiting others that were injurious to the cell and its components.
Specialized functions evolved in the cells, and the cells in turn grew specialized for various functions. This may have been what led to the evolution of multicellular organisms. This development is considered an important phase in the origin of life.
The separation of different chemical components within a cell by membranes lead to the evolution of organelles. This is an important phase in evolution because it led to the increase in complexity of life processes.
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Chapter 12 Solutions
What Is Life? A Guide to Biology with Physiology
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