Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 25, Problem 7TYK
Summary Introduction
Introduction: The geologic record for the history of the Earth is established by geologists. The Archaean, Proterozoic, and Hadean eons comprise the first 4 billion years. The Phanerozoic eon cover the previous half billion years. It is divided into three eras, which include Mesozoic, Cenozoic, and Paleozoic eras. Mostly, life on the Earth contains small and single-celled microorganisms throughout the Proterozoic era from approximately 2.3 billion years ago.
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Explain how archae are more closely related to Eukarya than to bacteria even though Archae are related. Explain fully
a. both are bacteria
b. both have cells
c. both have nucelus
d. both are prokaryotes
A unicellular organism has a cell wall, a nucleus, chloroplasts, and several flagella. Which classification best
matches this organism?
O A. prokaryotic eubacteria
O B. eukaryotic protist
C. prokaryotic archaebacteria
O D. eukaryotic plant
The endosymbiotic theory explains the:a. origin of the first prokaryotic cells.b. origins of mitochondria and chloroplasts in eukaryotes.c. evolutionary relationship between animals, plants, and fungi.d. method of reproduction in protists.
Chapter 25 Solutions
Study Guide for Campbell Biology
Ch. 25 - Why do we say that, for life to have begun, the...Ch. 25 - Prob. 2IQCh. 25 - Prob. 3IQCh. 25 - Prob. 4IQCh. 25 - Prob. 5IQCh. 25 - a. Mammals originated 180 mya but did not change...Ch. 25 - Prob. 7IQCh. 25 - a. According to the model of species selection,...Ch. 25 - Prob. 1SYKCh. 25 - Label the eons, eras, and key events shown on the...
Ch. 25 - Describe three major processes that have...Ch. 25 - Prob. 4SYKCh. 25 - The primitive atmosphere of Earth may have favored...Ch. 25 - Prob. 2TYKCh. 25 - Prob. 3TYKCh. 25 - The half-life of carbon-14 is 5,730 years. A...Ch. 25 - Prob. 5TYKCh. 25 - Prob. 6TYKCh. 25 - Prob. 7TYKCh. 25 - Look back at the Geologic Record in Table 25.1....Ch. 25 - Prob. 9TYKCh. 25 - According to the endosymbiont theory, a. the first...Ch. 25 - Prob. 11TYKCh. 25 - Prob. 12TYKCh. 25 - Prob. 13TYKCh. 25 - Prob. 14TYKCh. 25 - Prob. 15TYKCh. 25 - Prob. 16TYKCh. 25 - Prob. 17TYKCh. 25 - What is meant by the concept of species selection?...
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- 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 membranearrow_forwardWhich of the following extremophiles is the best model for the earliest organisms on Earth? A. a prokaryote found near hydrothermal vents B. an archaean capable of surviving in the polar ice caps C. an anaerobic archaean species D. a bacterium that thrives in a highly acidic environmentarrow_forwardOne piece of supporting evidence for the endosymbiotic theory for the origin of eukaryotic cells is thata. eukaryotic cells have internal membranes.b. mitochondria and chloroplasts have their own DNA.c. Golgi bodies and endoplasmic reticulum were present in ancestral cells.d. the nuclear membrane could only have come from another cell.arrow_forward
- Which of the following statements supports the concept of the endosymbiotic theory? A. Proteins may be trafficked within the endomembrane system. B. Ribosomes are present in the cytoplasm of prokaryotic cells and eukaryotic cells. C. Chloroplasts have many features in common with bacteria. D. Mitochondria can fuse together to form larger organelles within eukaryotic cells.arrow_forwardWhich of the following is evidence that eukaryotes and prokaryotes share a common ancestor? a.All eukaryotes and prokaryotes use organic molecules as an energy source. b.All eukaryotes and prokaryotes are capable of mitosis. c.All eukaryotes and prokaryotes contain ribosomes. d.All eukaryotes and prokaryotes contain linear DNA.arrow_forwardWhich of the following statements is true? A. Archaea and bacteria have identical membrane lipids. B. The cell walls of archaea lack peptidoglycan. C. Prokaryotes have low levels of genetic diversity. D. No archaea are capable of using CO2 to oxidize H2 releasing methane.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_forwardBiologists at NASA are studying new life forms found in the arctic and have collected an unknown specimen that appears to have a cell membrane, ribosomes and mitochondria. This specimen could be… a.a bacterium b. a virus c. an archaeon d. any one of the above e. a eukaryotearrow_forwardWhich of the following observations about a bacterium would distinguish it from the last eukaryotic common ancestor? a. A double-stranded DNA genome b. Lack of a membrane-bound structure surrounding the genome c. Fatty acids in the lipid bilayer of the plasma membrane d. Enclosed by a cell wallarrow_forward
- 1. What are architarchs? These are A. fossils that resemble the ruptured coats of cyanobacteria. B. symbiotic combinations of eukaryotic cells. C. the fossilized remains of diatoms. D. the oldest reputed eukaryotic fossils. 2.How did multicellularity probably evolve? * A. When colonies of cells became more and more independent B. By cellular separation within a coenocyte C. All of these three are correct. D. Many times in the Kingdom Protistaarrow_forwardIn the Latin name Canis lupis , the "Canis" is the name of the corresponding: a. Species c. Genus 1. b. Family d. Wolf only 2. The most primitive type of bacteria, which can live in extreme environments belong to the kingdom: a. Eubacteria c. Protista b. Archaebacteria d. Animalia Kingdom Fungi and Kingdom Animalia have which of the following in common a. both have eukaryotic cells b. both reproduce sexually c. both reproduce asexually d. Neither are heterotrophic 3.arrow_forwardWhich of the following are not eukaryotic? a. bacteria b. archaea c. protozoa d. both a and barrow_forward
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