Which of the following is correct regarding multicellularity? a) All protists are unicellular organisms O b) Colonies of bacteria are considered multicellular organisms c) It arises from endosymbiosis d) In animals, multicellularity involved the evolution of a new sequence domain in proteins called cadherins that allow cells to attach to one another e) Multicellularity evolved only once in all eukaryotes

Which of the following is correct regarding multicellularity? a) All protists are unicellular organisms O b) Colonies of bacteria are considered multicellular organisms c) It arises from endosymbiosis d) In animals, multicellularity involved the evolution of a new sequence domain in proteins called cadherins that allow cells to attach to one another e) Multicellularity evolved only once in all eukaryotes

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter27: Protists

Section27.1: What Is A Protist?

Problem 1SB: What distinguishes protists from prokaryotes? What distinguishes protists from fungi, land plants,...

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Domain Eukarya ___________________means their cells have nuclei and other compartments (____________________). Organisms in domain Eukarya have larger, more complex cells with nuclei. 4 Kingdoms: ________________, Animalia, Fungi, and ________________ Kingdom Protists: Unicellular or multicellular and Autotrophs or heterotrophs Kingdom Animalia: Multicellular,___________________ (by ingestion) Kingdom Fungi: Most are multicellular and are heterotrophs (by ___________digestion) Kingdom Plantae: Multicellular, _______________
How does the emergence of endosymbiotic theory change the way humans view microorganisms? Will people be comfortable imagining that the life functions of plants and animals, including their own, are actually dependent on the coexistence of many different microscopic pieces? This question is not answered yet
The TATA-binding protein (TBP) is thought to be necessary for transcription in all eukaryotic cell nuclei. Studies show that archaea, but not bacteria,have a protein structurally and functionally similar to TBP. What does this similarity suggest regarding the evolution of archaea, bacteria, and eukaryotes? How might knowledge of this similarity affect how systematists classify these organisms?
. 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
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
Please answer ASAP Which statement best describes the primary difference between bacteria and protists? In terms of cellular organization, protists are multicellular microbes and are prokaryotes. In terms of cellular organization, bacteria are single-celled microbes and are prokaryotes. In terms of cellular organization, protists are multicellular microbes and are chemoautotrophs. In terms of cellular organization, bacteria are single-celled microbes and are eukaryotes.
Describe two adaptations that enable prokaryotes to survive in environments too harsh for other organisms.
All of the following are characteristics of the bacterial flagellum except: Select one: a. It has a hook-like insertion to a basal body in the cell wall. b. It is composed of protein c. It is used in conjugation d. Counterclockwise rotation moves bacteria forward All the following are characteristics of prokaryotes except: Select one: a. Prokaryotes have cell wall b. Prokaryotes have ribosomes c . Prokaryotes have organelles d. Prokaryotes lack a nucleus e. Prokaryotes have genes
Match the following taxonomic terms. Terms 1. A kingdom entirely of eukaryotic and mostly unicellular organisms 2. A kingdom entirely of of eukaryotic and mostly multicellular organisms 3. A general term that describes single celled organisms from bacteria and archae domains that lack a nucleus 4. General terms that describe organizations with cells that contain a nucleus Group of answer choices Prokaryotic Eukaryotic Fungi Protista
Which of the following is not true of the protists? (a) they are unicellular, colonial, coenocytic, or simple multicellular organisms (b) their cilia and flagella have a 9 + 2 arrangement of microtubules (c) they are prokaryotic, as bacteria and archaea are (d) some are free-living, and some are endosymbionts (e) most are aquatic and live in the ocean or in freshwater ponds
Which of the following statements about eukaryotes is correct? - Eukaryotes are life forms that possess a nucleus in the cells. - Some cellular features, such as endoplasmic reticulum, is uniquely eukaryotic and is not shared with either bacteria or archaea. - It has been hypothesized that the first eukaryotic cell is a chimera between a bacterium and an archaeon. - During phylogenetic reconstruction, it is often found that eukaryotic genes that are responsible for information processing are more closely related to corresponding archaeal genes than to bacterial genes. - All of the above
In the late 1960s (and since), Lynn Margulis (and others) provided considerable evidence for the endosymbiotic theory of the origin of various organelles in eukaryotic cells.What is the endosymbiotic theory? Which two eukaryotic organelles were proposed to have arisen as endosymbionts? What evidence did Margulis present to support each organelle as an endosymbiont?