Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 23, Problem 9RQ
Which of the following observations about a bacterium would distinguish it from the last eukaryotic common ancestor?
- A double-stranded DNA genome
- Lack of a membrane-bound structure surrounding the genome
- Fatty acids in the lipid bilayer of the plasma membrane
- Enclosed by a cell wall
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Which 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 wall
Which of the following pieces of evidence could support the endosymbiotic theory if found to be true?
Traces of peptidoglycan in the cytoplasm in eukaryotes
Presence of rRNA in eukaryotes
Presence of 80S ribosomes in eukaryotes
The discovery of a unicellular eukaryote
. Which of the following prokaryotic kingdoms is characterized by the absence of a nucleus, the absence of histone proteins, the presence of fatty acids ester-linked to glycerol in their G-3-P cell membrane, and the presence of enzymes for constructing a peptidoglycan cell wall?
kingdom Archaeobacteria
kingdom Animalia
kingdom Fungi
kingdom Plantae
kingdom Eubacteria
Chapter 23 Solutions
Biology 2e
Ch. 23 - Figure 23.5 What evidence is there that...Ch. 23 - Figure 23.25 Which of the following statements...Ch. 23 - Figure 23.28 Which of the following statements...Ch. 23 - What event is thought to have contributed to the...Ch. 23 - Which characteristic is shared by prokaryotes and...Ch. 23 - Mitochondria most likely evolved by ___________ ....Ch. 23 - Which of these protists is believed to have...Ch. 23 - In 2016, scientists published the genome of...Ch. 23 - Which of the following observations about a...Ch. 23 - Protists that have a pellicle are surrounded by...
Ch. 23 - Piotists with the capabilities to perform...Ch. 23 - Which of these locomotor organs would likely be...Ch. 23 - Alternation of generations describes which of the...Ch. 23 - The amoeba E. histolytica is a pathogen that forms...Ch. 23 - Which protist group exhibits mitochondrial...Ch. 23 - Conjugation between two Paramecia produces total...Ch. 23 - What is the function of the raphe in diatoms?...Ch. 23 - What genus of piotists appears to contradict the...Ch. 23 - A marine biologist analyzing water samples notices...Ch. 23 - An example of carbon fixation is photosynthesis...Ch. 23 - Which parasitic protist evades the host immune...Ch. 23 - Which of the following is not a way that piotists...Ch. 23 - Describe the hypothesized steps in the origin of...Ch. 23 - Some aspects of eukaryotes are more similar to...Ch. 23 - Explain in your own words why sexual reproduction...Ch. 23 - Giaidia iamblia is a cyst-forming protist parasite...Ch. 23 - Explain how the definition of protists ensures...Ch. 23 - The chllorophyte (green algae) genera Ulva and...Ch. 23 - Why might a light-sensing eyespot be ineffective...Ch. 23 - Opisthokonta includes animals and fungi, as well...Ch. 23 - Describe two ways in which paramecium differs from...Ch. 23 - How does killing Anopheles mosquitoes affect the...Ch. 23 - Without treatment, why dees African sleeping...Ch. 23 - Describe how increasing stress to the ocean would...
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- Which of the following is never found in prokaryotes?A. RibosomesB. DNA PolymerasesC. Golgi ApparatusD. CytoplasmE. DNAarrow_forwardArchaea (formerly known as archaebacteria) is one of the three major divisions of living organisms; the other two are eubacteria and eukaryotes. Nanoarchaeum equitans is in the Archaea domain and has one of the smallest genomes known, about 0.5 Mb. How can an organism complete its life cycle with so little genetic material?arrow_forwardWhich of the following is/are found in bacteria BUT NOT in eukaryotes? Cell walls Phospholipids DNA genomes None of the above: All are found in bacteria and some or all Eukaryotesarrow_forward
- Which of the following organisms is a prokaryote? fungus algae protozoa archaea both archaea and protozoaarrow_forwardWhich of the following is not true concerning the mitochondria and chloroplasts and is not evidence in support of the Endosymbiotic Theory? Both divide independently of the eukaryotic cell they are within Both contain their own DNA in a single, circular chromosome Both can survive independently when removed from a eukaryotic cell Both are about the same size as a bacteriaarrow_forwardThis domain is characterized by ancient bacteria that can live in extreme environments, such as volcanoes eukarya bacteria prokarya archaeaarrow_forward
- Multicellular organisms with a true nucleus, histone proteins, ester-linked fatty acids in their cell membranes, heterokont ancestry, and cell walls with a high content of cellulose (over 20%) must be: members of kingdom Plantae members of kingdom Eubacteria members of kingdom Protista members of kingdom Animalia members of kingdom Fungiarrow_forwardScientists have discovered a new, unknown single-celled organism. They decide to compare the DNA sequence of the ubiquitin gene of the unknown organism with classified organisms. The ubiquitin gene is a gene found in some variation in all cells. Which organism shares the MOST recent common ancestor with the unknown organism? Question options: Yeast Green Algae Halophile Streptococcusarrow_forwardWhich of the following statements are TRUE about organisms in the Domain Bacteria? I. Consist of bacteria and cyanobacteria II. Some are photoautotrophs III. Genetic material is a single stranded DNA IV. Organelles are not presentarrow_forward
- In the domain system of classification, prokaryotes are divided into two domains: Bacteria and Archaea. The two domains differ in all BUT one feature. Which feature do they have in common? Question options: They both have identical cell walls. They both have prokaryotic cells. They both thrive in extreme environments. They both are able to live only under anaerobic conditions.arrow_forwardWhich of these characteristics is NOT shared by bacteria and archaea? Group of answer choices presence of plasma membrane absence of membrane-bound organelles presence of peptidoglycan in cell wall absence of a nucleusarrow_forwardA scientist has discovered a new species and is tasked with identifying which of the kingdoms of life the organism might fit. Multicellular with nuclei Presence of a cell wall containing chitin Heterotrophic Non-motile Question options: Fungi Protista Plantae Animalia Protists are a group of organisms that are eukaryotic. However, they are a diverse group, with some of the members of the group having a more recent common ancestor with plants while others have a more recent common ancestor with animals. Algae are protists that are more closely related to plants than any other group. Which characteristics would algae share with plants but NOT with animals? Question options: DNA Ribosomes Chloroplasts Mitochondriaarrow_forward
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