ETEXT CAMPBELL BIOLOGY IN FOCUS INSTANT
3rd Edition
ISBN: 9780135964422
Author: Urry
Publisher: PEARSON
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Chapter 25, Problem 5TYU
Summary Introduction
Introduction:
When one creature lives in the body of other organism and has mutual beneficial relation, then this interaction is known as endosymbiosis. In secondary endosymbiosis, the plastid lives in the prokaryotes and in primary endosymbiosis; the plastids are present in eukaryotes.
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Which of the following structures in chlorarachniophytes provides evidence that they evolved through the endosymbiosis of a green alga by a heterotrophic eukaryote?
A. food vacuole
B. nucleomorph
C. mitosomes
D. flagella
Which of the following statements is the MOST compelling argument that fungi are more closely related to animals than plants?
A.
Plants have chloroplasts whereas fungi and animals cells do not.
B.
Plants fix carbon dioxide from the air; fungi and animals use pre-existing organic molecules.
C.
The DNA sequences of ribosomal RNA of fungi share more homology with ribosomal RNA from animals than plants.
D.
Both animal and fungal cells are eukaryotic.
Horizontal gene transfer probably started soon after endosymbiosis. It has resulted in genes being moved from the mitochondrion to the nucleus.
What is a reasonable explanation for why some genes still remain in the mitochondria?
A.
The products of those genes are rapidly damaged and need to be quickly replaced.
B.
The products of those genes are not required for organelle function.
C.
The ability for lateral gene transfer ended about a billion years ago and some genes simply got “stuck” within mitochondria.
D.
The products of those genes are only needed in the mitochondria.
Chapter 25 Solutions
ETEXT CAMPBELL BIOLOGY IN FOCUS INSTANT
Ch. 25.1 - Describe major events in the evolution of early...Ch. 25.1 - Explain why eukaryotes are said to be combination...Ch. 25.1 - Prob. 3CCCh. 25.2 - Summarize the evidence that choanoflagellates are...Ch. 25.2 - MAKE CONNECTlONS Describe how the origin of...Ch. 25.2 - Prob. 3CCCh. 25.3 - Briefly describe the organisms found in each of...Ch. 25.3 - MAKE CONNECTIONS Review Figures 7.2 and 8.5...Ch. 25.3 - Prob. 3CCCh. 25.3 - Prob. 4CC
Ch. 25.4 - Justify the claim that photosynthetic protists are...Ch. 25.4 - Prob. 2CCCh. 25.4 - Prob. 3CCCh. 25 - The oldest fossil eukaryote that can be resolved...Ch. 25 - Prob. 2TYUCh. 25 - Plastids that are surrounded by more than two...Ch. 25 - Prob. 4TYUCh. 25 - Prob. 5TYUCh. 25 - Based on the phylogenetic tree in Figure 25.10,...Ch. 25 - MAKE CONNECTIONS The bacterium Wolbachia is a...Ch. 25 - FOCUS ON EVOLUTION DRAW IT Medical researchers...Ch. 25 - FOCUS ON INTERACTIONS Organisms interact with each...Ch. 25 - SYNTHESIZE YOUR KNOWLEDGE These micrographs show...
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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
- Why 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_forwardthe same as the genus of an animal that steals chloroplasts from algae. It can keep the chloroplasts alive for many months, thanks to genes that were originally part of the algae genome. What kind of animal is this? A. Luna both caterpillars, Insecta, Arthropod B. Marine Flatworm, platyhelminthes C. Sea slug, mollusk gastropod D. Bivalve, Mollusk 18arrow_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
- In 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_forwardIt is thought that the mitochondria and chloroplasts of eukaryotic cells came froma. the development of the internal membrane system.b. protists.c. mutation.d. endosymbiosis of bacteriaarrow_forwardIn this data table comparing DNA sequences among various protists, why do some cells have a dash rather than a value? A. Those cells would compare one species to itself. B. Those cells would duplicate comparisons shown elsewhere in the matrix. C. Those comparisons were not made by the researchers.arrow_forward
- According to the endosymbiotic theory, why was it adaptive for the larger (host) cell to keep the engulfed cell alive, rather than digesting it as food? A. The host cell would have been poisoned if it had digested the engulfed cell. B. The host cell was able to survive anaerobic conditions with the engulfed cell alive. C. The engulfed cell provided the host cell with CO2 D. The engulfed cell provided the host cell with ATP. E. The engulfed cell allowed the host cell to metabolize glucose.arrow_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_forwardWhich of the evolutionary sequences below does NOT represent how chloroplasts were derived? A.cyanobacteria → red algae →brown algae B.cyanobacteria → green algae → land plants C. cyanobacteria → green algae → fungi → land plants D. cyanobacteria → green algae → red algaearrow_forward
- 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.arrow_forwardThe cell walls of fungi are strengthened by chitin, a strong but flexible polysaccharide. Which of these statements about the function of chitin in fungal cell wall is TRUE? a. Chitin-rich walls of fungi improves feeding by facilitated diffusion. b. The movement of water and nutrients into fungal cells creates pressure that could cause them to burst if they were not surrounded by a chitin-rich cell wall. c. The chitin present in fungal cell wall does not impart any advantage in terms of nutrient acquisition from the environment. d. Chitinous tubular cell walls confers motility to multicellular fungi.arrow_forwardAlthough ascospores are produced by mitotic division, none of the spores develop into fungi that are identical to either parental hyphae. What is the BEST explanation for this observation? A. The spores inherit half their genes from each parent. B. The spores inherit haploid nuclei from their parents. C. The spores inherit mutations as a result of meiosis. D. The spores inherit mutations as a result of mitosis. Photo Attatchedarrow_forward
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