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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332

Solutions

Chapter
Section
BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332
Chapter 19, Problem 4SQ
Textbook Problem
803 views

According to one hypothesis, negatively charged clay particles played a role in early ______ .

  1. a. protein formation
  2. b. DNA replication
  3. c. photosynthesis
  4. d. oxygen declines

Summary Introduction

Concept introduction: The cells in the modern times take up the organic monomers’ concentrate on them and assemble the organic monomers into organic polymers. But before that, there were cells that would increase the chance of polymer formation by a non-biological process that is concentrated on organic subunits.

Explanation of Solution

Reasons for correct statement:

By one hypothesis, the process of protein formation occurred on the clay-rich tidal flats. The positively charged particles such as organic subunits dissolved in sea water stick to the clay particles, which have a slight negative charge. This type of binding would have concentrated on the subunits, and the evaporation at the low tide would have continued the process. The energy from the sunlight might have triggered the polymerization reaction.

Option a. is given as “protein formation”.  As protein formation took place with the help of negatively charged clay particles, option a. is correct.

Reasons for the incorrect statements:

Option b. is given as “DNA replication”...

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