CAMPBELL BIOLOGY IN FOCUS (LL)-W/MOD.MA
3rd Edition
ISBN: 9780135686065
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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One of these is NOT true about the mitochondria and plastid organelles in eukaryotes
A.
mitochondrial DNA is less similar to prokaryotic DNA than is plastid DNA
B.
the products of photosynthesis are metabolized by the mitochondria
C.
all eukaryotes have mitochondria (or their remnants), whereas many eukaryotes do not have plastids
D.
CO2 produced by the mitochondrial can be used in the cell to carry out photosynthesis
You are studying a newly identified photosynthetic organism. What evidence would you use to determine whether its
photosynthetic abilities were due to primary or secondary endosymbiosis?
Select one:
O a. Number of membranes around chloroplast
O b. Number of membranes around mitochondria
c. Presence of a chloroplast
O d. Number of chloroplasts
O e. Presence of mitochondria
The 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 membrane
Chapter 25 Solutions
CAMPBELL BIOLOGY IN FOCUS (LL)-W/MOD.MA
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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- the 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_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
- It 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_forwardAccording 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_forwardHow is the life cycle of Ascomycetes different from that of humans? A. Haploid cells undergo meiosis. B. Haploid cells undergo mitosis. C. Diploid cells undergo meiosis. D. Diploid cells undergo mitosis. (photo attatched)arrow_forward
- Which 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_forward1. Which of the following is not an evidence that chloroplasts and mitochondria originated as prokaryotic endosymbionts of larger cells? * A. They contain circular DNA molecules not associated with proteins. B. Their membranes have enzymes and transport systems that resemble those found in plasma membranes of prokaryotes. C. Their ribosomal RNA is more similar to that of eubacteria than to eukaryotes. D. They contain their own genome and produce their own proteins. 2. Why does the endosymbiotic hypothesis maintain that chloroplasts may have at least three origins? It is because * A. Molecular systematics link the red line, green line and brown line to three different eubacteria. B. The chloroplasts of green plants show three distinct morphologies. C. The pigment composition and thylakoid arrangement cyanobacteria occur in three different arrangements. D. The phyla of algal protists can be divided into three…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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