Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Chapter 18.5, Problem 1MC
Summary Introduction
To determine:
The change in protist’s classification on the basis of molecular sequences.
Concept introduction:
At molecular level, evolution can be defined as a process which supports the mutation, which involves the changes in proteins and corresponding genes in the branches of a phylogentic tree. Phylogeny is the interference of evolutionary relationship.
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What is a working definition of a “protist”?
What is the evolutionary adaptation that separates protists from all land plants?
Why is 'protists' considered a polyphyletic grouping? Why do biologists still use it?
Chapter 18 Solutions
Biology: Concepts and Investigations
Ch. 18.1 - What features define the protists?Ch. 18.1 - Prob. 2MCCh. 18.1 - Why are evolutionary biologists interested in...Ch. 18.2 - Prob. 1MCCh. 18.2 - Prob. 2MCCh. 18.2 - List and describe the characteristics of the major...Ch. 18.3 - What mode of nutrition do the slime molds and...Ch. 18.3 - Prob. 2MCCh. 18.3 - Prob. 3MCCh. 18.4 - Prob. 1MC
Ch. 18.4 - Prob. 2MCCh. 18.4 - List three diseases caused by flagellated...Ch. 18.4 - Compare and contrast amoebae, foraminiferans, and...Ch. 18.4 - How do ciliates move and eat?Ch. 18.4 - Prob. 6MCCh. 18.5 - Prob. 1MCCh. 18.5 - Prob. 2MCCh. 18.6 - Use the food chain in figure 18.21a to explain why...Ch. 18.6 - Prob. 2MCCh. 18 - Which of the following is NOT a characteristic of...Ch. 18 - Suppose you are studying a protist under a...Ch. 18 - Some protist lineages arose from secondary...Ch. 18 - Prob. 4MCQCh. 18 - Why are DNA sequences useful in the classification...Ch. 18 - Explain why evolutionary biologists are interested...Ch. 18 - The amoeba Pelomyxa palustris is a single-celled...Ch. 18 - How is it adaptive for a red alga to have pigments...Ch. 18 - How are kelp similar to trees? How are they...Ch. 18 - Prob. 5WIOCh. 18 - Prob. 6WIOCh. 18 - Prob. 7WIOCh. 18 - Suppose someone hands you a microscope and a...Ch. 18 - Review the Survey the Landscape figure in the...Ch. 18 - Prob. 2PITCh. 18 - Molecular data have changed protist...
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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
- What is endosymbiosis and why is it considered to be the source of eukaryotic diversity? Why are we confident this only happened once? What is primary and secondary endosymbiosis? Was there another endosymbiotic event that led to a third lineage? What group of organisms possesses a structure that might suggest this possibility and what is the structure? Why is the structure in question different from the ancestor of other plastids?arrow_forwardwhat function did molecular signals and receptors have in the protistan ancestors of complex organisms?arrow_forwardHow have molecular data informed prokaryotic phylogeny?arrow_forward
- A) A major difference between eukaryotic cells and prokaryotic cells is that eukaryotic cells Group of answer choices exhibit little if any compartmentalization of function are generally smaller than prokaryotic cells have a large degree of internal organization lack organelles have little if any internal organization B) Which of the following statements about protists is false? Group of answer choices Some protists are mixotrophic Certain protists share a common ancestor with land plants Some protists are photosynthetic prokaryotes which are similar to the ancestral chloroplast Protists are a polyphyletic group of organisms that often bear little resemblance to each other Although most protists are unicellular, some protists are multicellular as wellarrow_forwardWhich protist groups include species that use pseudopods?arrow_forwardDid Aphids Acquire Their Ability to Make CarotenoidsThrough Horizontal Gene Transfer?arrow_forward
- What is organic evolution? How did it help Linnaeus and Wallace in their quest for classification?arrow_forwardWhat do biologists mean when they say that sex and reproduction are uncoupled in most protists?arrow_forwardwhat are some themes in the structural and functional diversity of protists? Nutritional? reproductive?arrow_forward
- describe a scenario for the evolutionary origin of protist chloroplasts?arrow_forwardWhat function do amoeboid cells serve?arrow_forwardHow are forams useful for researchers to study changes in ocean temperature over time? What are mixotrophs? What is endosymbiosis and why is it consider to be the source of eukaryotic diversity? Why are we confident this only happens once? What is primary and secondary endosymbiosis? Was there another endosymbiotic event that led to a third lineage? What group of organisms possesses a structure that might suggest this possibility and what is the structure? Why is the structure question different from the ancestor of other plastids? What are diatom blooms and why are they of particular interest to climate change scientists?arrow_forward
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