Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Textbook Question
Chapter 19, Problem 8SQ
The evolution of _____ resulted in an increase in the levels of atmospheric oxygen.
- a. DNA-based genomes
- b. aerobic respiration
- c. sexual reproduction
- d. photosynthesis that releases oxygen
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18
Mitochondria most likely evolved from _____________. a. a photosynthetic cyanobacterium b. cytoskeletal elements c. aerobic bacteria d. membrane proliferation
The evolution of ________ resulted in the eventualformation of the ozone layer.a. DNA-based genomesb. aerobic respirationc. sexual reproductiond. oxygen-producing photosynthesis
Chapter 19 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 19 - According to the big bang theory, _______. a. the...Ch. 19 - An abundance of _______ in Earth's early...Ch. 19 - The Changing Earth Studies of ancient rocks and...Ch. 19 - Prob. 2DAACh. 19 - Prob. 3DAACh. 19 - Prob. 4DAACh. 19 - Stanley Millers experiment demonstrated...Ch. 19 - According to one hypothesis, negatively charged...Ch. 19 - The prevalence of _______ in living organisms is...Ch. 19 - Prob. 6SQ
Ch. 19 - Among prokaryotes, only the cyanobacteria _______....Ch. 19 - The evolution of _____ resulted in an increase in...Ch. 19 - Bacteria that cause the disease typhus arc close...Ch. 19 - Infoldings of the plasma membrane into the...Ch. 19 - Prob. 11SQCh. 19 - A stromatolite is a structure __________. a....Ch. 19 - Prob. 13SQCh. 19 - Evidence that Mars __________ suggests that it may...Ch. 19 - Chronologically arrange the evolutionary events,...Ch. 19 - Researchers looking for fossils or the earliest...Ch. 19 - The astronomer Carl Sagan once said, "We are made...Ch. 19 - How did the evolution of oxygen-releasing...
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- The first forms of life on Earth were thought to be_________. a. single-celled plants b. prokaryotes c. insects d. large animals such as dinosaursarrow_forwardWhich of the following is NOT evidence for endosymbiosis? A. Bacteria and mitochondria both have nuclei. B. Bacteria and mitochondria both have ribosomes. C. Bacteria and mitochondria both have circular DNA. OD. Bacteria and mitochondria both reproduce via binary fission E. Bacteria and mitochondria both have membranes.arrow_forwardWhy do scientists believe that mitochondria evolved before chloroplasts? A. because all eukaryotic cells have mitochondria but not all eukaryotic cells have chloroplasts B. because mitochondria are more efficient than chloroplasts C. because mitochondria live longer than chloroplasts D. because mitochondria are larger and stronger than chloroplasts Chrome OS Wienarrow_forward
- why was the first mini threshold of life's evolution, photosynthesis, so important? a. it helped plants move onto land b. it transformed our atmosphere from oxygen-rich to carbon dioxide-rich c. it allowed life to spread beyond oceanic vents d. it forced organism to become multicellular to process more complex energyarrow_forwardWhich 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 events occurred first in eukaryotic evolution? a. Endosymbiosis and mitochondria evolution b. Endosymbiosis and chloroplast evolution c. Compartmentalization and formation of the nucleus d. Formation of multicellular organismsarrow_forward
- The first forms of life on Earth were ________. a. plants b. microorganisms c. birds d. dinosaursarrow_forwardDinobryon is a species of protozoa that reproduce asexually. How can this asexual reproduction be harmful to the species? A. Their population does not grow too quickly. B. They use more cellular energy in reproduction. O C. They do not use up any energy finding mates. D. They have less genetic diversity in their population.arrow_forwardIn 2016, scientists published the genome of Monocercomonoides, and demonstrated that this organism has no detectable mitochondrial genes. However, its genome was arranged in linear chromosomes wrapped around histones which are contained within the nucleus.Monocercomonoides is therefore a(n) _________. a. Bacteria b. Archea c. Eukaryote d. Endosymbiontarrow_forward
- One 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_forwardEvolution of ________ increased the energy availableto cells, making a larger genome and processes such asmembrane trafficking possible.a. the nucleus c. chloroplastsb. endoplasmic reticulum d. mitochondriaarrow_forwardThe 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_forward
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