Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 25.2, Problem 3SB
Summary Introduction
To review:
The properties that the earliest proto-cells hypothesized to have in common with modern-day cellular organisms and mention the properties of modern-day cellular organisms that are hypothesized to have been absent in the earliest proto-cells.
Introduction:
The evolution of cell membrane plays a very important role in the adaptation of modern cellular organisms in the varying environment. It keeps useful cellular secretions intact, maintains chemically distinct intracellular components, and provides protection from
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Chapter 25 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 25.1 - Why is the reducing nature of early Earths...Ch. 25.1 - Prob. 2SBCh. 25.2 - Prob. 1SBCh. 25.2 - Prob. 2SBCh. 25.2 - Prob. 3SBCh. 25.3 - Prob. 1SBCh. 25 - Prob. 1TYKCh. 25 - Which of the following is not a characteristic of...Ch. 25 - Prob. 3TYKCh. 25 - According to the OparinHaldane hypothesis, the...
Ch. 25 - Prob. 5TYKCh. 25 - Prob. 6TYKCh. 25 - In a population of self-replicating RNA molecules,...Ch. 25 - Prob. 8TYKCh. 25 - Prob. 9TYKCh. 25 - Prob. 10TYKCh. 25 - Prob. 11TYKCh. 25 - Prob. 12TYKCh. 25 - Prob. 13TYKCh. 25 - Prob. 14TYKCh. 25 - Prob. 15TYKCh. 25 - Prob. 16TYKCh. 25 - Prob. 1ITDCh. 25 - Prob. 2ITDCh. 25 - Prob. 3ITD
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- Which group of animals displays metamerism? What is metamerism and what are some potential benefits of having a metameric body plan?arrow_forwardWhy are archaebacteria called living fossils?arrow_forwardIn the evolution of the skeleton, release of collagen by specialized amoebocytes and followed by the release CaCo3 by amobocytes cells first appears in the collagen skeletal matric formed by: a) the sponge b)prokaryotes c)Osyteocytes of the Boney fishes, d) Adipose cells, e) Neuocytes of the choridates. Part 2) What is the process that would be employed by the two types of cells considered in the previous question? A) carried out by photosynthesis, B)Occurs in the nucleus C)captures solar radiation D) is carried by the Golgi apparatus thriugh exocytosis, E) doesn't happen.arrow_forward
- Do plants and animals have a common multicellular ancestor?arrow_forward1) Name and give a brief account of the theory that explains the evolution of Eukaryotic cells from Prokaryotic cells. 2) Explain the reactions that occur to form polysaccharides, using starch as an example. 3) What do enzymes do? What are their main structural features? Give an example of a biological enzyme. 4) Describe the structure of fats and lipids. Why are some solid at room temperature whereas others, particularly from plants, are liquid? Briefly describe the structure of an animal cell. What are the main differences between animal and plant cells? Briefly outline the steps involved in the synthesis of ATP in eukaryotic cellsarrow_forwardWhat evidence supports the hypothesis that mitochondria preceded plastids in the evolution of Eukaryotes cells?arrow_forward
- What do the multiple branching points at the root of the eukaryotic phylogenetic tree indicate about the evolution of eukaryotes? A. that unikonts are derived from the SAR clade B. that Archaeplastids were the first eukaryotes C. that fungi are more closely related to plants than animals D. that eukaryotes are all descended from a common ancestorarrow_forwardYour instructor has a preserved organism behind her back. She gives you the following clues as to its identity. It is an animal but it contains fewer than 2 germ cell layers (primary tissue layers). Furthermore, it does not have any kind of symmetry. It must be a Question 8 options: a) flatworm. b) starfish. c) sponge. d) jellyfish.arrow_forwardDo bacteria have Mesosomes?arrow_forward
- place the evolutionary steps that led to complex multicellularity in the order in which they thought to have occurred. a) The ability of cells to stick to each other b) Differential gene expression in cells c) The ability to communicate between cells d) The ability to move molecules by bulk flowarrow_forwardWhat is the correct order of appearance in the fossil record, starting with the earliest: eukaryotic cells, multicellular organisms, prokaryotic cells?arrow_forwardIn 40 words or fewer, explain why we think that RNA, and not DNA, was the hereditary material in the first protocell.arrow_forward
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