CAMPBELL BIOLOGY-W/MOD.MASTERBIOLOGY
11th Edition
ISBN: 9780134683461
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 25, Problem 5TYU
Which of the following steps has not yet been accomplished by scientists studying the origin of life?
- (A) synthesis of small RNA
polymers by ribozymes - (B) formation of molecular aggregates with selectively permeable membranes
(C) formation of protocells that use DNA to direct the
(D) abiotic synthesis of organic molecules
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Students have asked these similar questions
Which of the following characters evolved last (i.e., most recently)?
A) Heredity
B) Photosynthesis
C) Multicellularity
D) Eukaryotic cells
E) Prokaryotic cells
A) single-cell organisms, Cyanobacteria
B) mammal formed, fish, reptiles
C) Cyanobacteria, single cell organisms
D) multi-cellular, fish, amphibians
When energy is transferred from one organism to another, some energy is lost to the environment due primarily to ____ ?
A.)reproduction
B.)growth
C.)the release of heat
D.)the transmission of DNA
Chapter 25 Solutions
CAMPBELL BIOLOGY-W/MOD.MASTERBIOLOGY
Ch. 25.1 - What hypothesis did Miller test in his classic...Ch. 25.1 - How would the appearance of protocells have...Ch. 25.1 - MAKE CONNECTIONS In changing from an "RNA world"...Ch. 25.2 - Describe an example from the fossil record that...Ch. 25.2 - WHAT IF? Your measurements indicate that a...Ch. 25.3 - The first appearance of free oxygen in the...Ch. 25.3 - What evidence supports the hypothesis that...Ch. 25.3 - WHAT IF? What would a fossil record of life today...Ch. 25.4 - Explain the consequences of plate tectonics for...Ch. 25.4 - What factors promote adaptive radiations?
Ch. 25.4 - Prob. 3CCCh. 25.5 - Explain how new body forms can originate by...Ch. 25.5 - Why is it likely that Hox genes have played a...Ch. 25.5 - MAKE CONNECTIONS Given that changes in morphology...Ch. 25.6 - How can the Darwinian concept of descent with...Ch. 25.6 - Prob. 2CCCh. 25 - Describe the roles that montmorillonite clay and...Ch. 25 - What are the challenges of estimating the ages of...Ch. 25 - What is the "Cambrian explosion," and why is it...Ch. 25 - Explain how the broad evolutionary changes seen in...Ch. 25 - How could changes in a Single gene or DNA region...Ch. 25 - Explain the reasoning behind the Statement...Ch. 25 - Level 1: Knowledge/Comprehension 1. Fossilized...Ch. 25 - The oxygen revolution changed Earth's environment...Ch. 25 - Prob. 3TYUCh. 25 - Prob. 4TYUCh. 25 - Which of the following steps has not yet been...Ch. 25 - Prob. 6TYUCh. 25 - Prob. 7TYUCh. 25 - EVOLUTION CONNECTION Describe how gene flow,...Ch. 25 - Prob. 9TYUCh. 25 - WRITE ABOUT A THEME: ORGANIZATION You have seen...Ch. 25 - Prob. 11TYU
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- 1) 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_forwardAccording to the endosymbiont theory: a) modern plant cells are able to carry out photosynthesis because their ancestors engulfed cyanobacteria. b) chloroplasts and mitochondria evolved from prokaryotic cells. c) ancestral eukaryotic cells acquired the ability to carry out aerobic respiration as a result of engulfing aerobic bacteria. d) a and c e) a, b and carrow_forwardi need the answer quicklyarrow_forward
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- Listed are the following characteristics or functions exhibited by organisms. For each organism in the first column of the following table, check the columns that correspond to that organisms characteristics a.)Autotrophic b.)Performs photosynthesis c.)Usually motile d.)Cell division requiring cell plate formation e.)Shows alternation of generations f.)Performs cellular respiration g.)Has mitochondria h.)Reproduces sexually and asexually i.)Can adapt and acquire immunity to pathogens j.)Heterotrophic k.)Has a structure called a brain l.)Can perform mitosis m.)Eukaryotic n.)Prokaryotic o.)Has genetic materials or DNAarrow_forwardPeptidoglycan is a chemical compound found in the cell walls of (a) most viroids (b) most archaea (c) all prokaryotes (d) most bacteria (e) most eukaryaarrow_forwardListed are the following characteristics or functions exhibit by organisms. For each organism in the first column of the following table, check the columns that correspond to that organisms characteristics a.)Autotrophic b.)Performs photosynthesis c.)Usually motile d.)Cell division requiring cell plate formation e.)Shows alternation of generations f.)Performs cellular respiration g.)Has mitochondria h.)Reproduces sexually and asexually i.)Can adapt and acquire immunity to pathogens j.)Heterotrophic k.)Has a structure called a brain l.)Can perform mitosis m.)Eukaryotic n.)Prokaryotic o.)Has genetic materials or DNAarrow_forward
- A scientist discovered a new group of unicellular organisms that lack mitochondria but possess an organelle related to the endoplasmic reticulum and is involved in energy production. The scientist hypothesizes that this organelle might be a missing link in the evolution of mitochondria. A) Do you agree with this hypothesis? Explain. B) Based on the available evidence, what is the most likely hypothesis for the origin of mitochondria? Provide four pieces of evidence to support this theory and justify why they are valid.arrow_forwardChoanoflagellates have collagen and the same genes coding for cell communication and adhesion that present in multicellular animals with bodies. Which best explains what this reveals regarding the evolution of multicellular bodies in animals? A) All of the genetic machinery and all of the body building materials (or similar precursors) evolved only after the appearance of multicellular bodies. B) The genetic machinery and some of the same body building materials (or similar precursors) are present in single-celled organisms, thus natural selection could use these for the evolution of multicellular bodies. C) That multicellular bodies evolved only once in evolutionary history, and it was within animals because collagen was present, along with the genetic machinery necessary for cell adhesion and communication. D) None of the above.arrow_forwardPlease, need help with the explanation of the answer: During Chemical Evolution, what would one expect to find inside the protocell? a) Water mixed with many non-polar molecules. b) Fatty Acids mixed with non-polar molecules. c) a wide variety of different ionic and polar covalent molecules dissolved in water. d) Functioning proteins. E) Living single-celled organismsarrow_forward
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