BIOLOGY
5th Edition
ISBN: 9781265202859
Author: BROOKER
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Chapter 27, Problem 8TY
Summary Introduction
Introduction: Members of archaea and bacteria belong to a group of most primitive organisms found on earth. These members are cosmopolitan and are found in almost all possible habitats.
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Mitochondria are thought to be the descendants of certain alpha proteobacteria. They are, however, no longer able to lead independent lives because most genes originally present in their genome have moved to the nuclear genome. Which phenomenon accounts for the movement of these genes?
Group of answer choices
A. recombination
B. conjugation
C. translation
D. endosymbiosis
Through what process did eukaryotic cells gain chloroplasts and mitochondria?
a. engulfment
b. endosymbiosis
c. endocytosis
d. phagocytosis
e. conjugation
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Chapter 27 Solutions
BIOLOGY
Ch. 27.2 - Core Skill: Connections Look ahead to Section...Ch. 27.2 - Prob. 2CSCh. 27.2 - Structure and Movement Concept Check: Does the...Ch. 27.2 - Prob. 3CSCh. 27.3 - Prob. 1CCCh. 27.5 - Prob. 1EQCh. 27.5 - Prob. 2EQCh. 27 - Which of the following features is common to...Ch. 27 - The bacterial phylum whose members typically...Ch. 27 - Gram-staining is a procedure that microbiologists...
Ch. 27 - Place the following steps in the correct order,...Ch. 27 - What ecological role do cyanobacteria play? a....Ch. 27 - Prob. 6TYCh. 27 - Prob. 7TYCh. 27 - Prob. 8TYCh. 27 - Prob. 9TYCh. 27 - Prob. 10TYCh. 27 - Prob. 1CQCh. 27 - Prob. 2CQCh. 27 - Prob. 3CQCh. 27 - Prob. 1COQCh. 27 - Prob. 2COQ
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- Which of the following characteristics is not common in prokaryotic cells? a. chromatin b. double-stranded DNA c. plasmids d. linear chromosomesarrow_forwardWhich 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 wallarrow_forwardWhich bacterial structure is found internally in the cell? a. plasmid b. cell wall c. flagellum d. capsule e. pilusarrow_forward
- 3) Which statement explains a way in which a researcher could cause a cytoplasmic protein to localize to the nucleus? a. Fuse an NLS to the cytoplasmic protein. b. Fuse an NES to the cytoplasmic protein. c. Fuse an NPC to the cytoplasmic protein. d. Create a nucleoporin specific to the cytoplasmic protein. 4) During the import of proteins into the nucleus, an importin subunit binds directly to: a. FG nucleoporins b. Ran-GDP c. basic nuclear localization signals in cargo proteins d. none of the abovearrow_forward1pt Which of the following organisms does not require two parents in order to reproduce? O A. B. OC. O D.arrow_forwardAccording to the endosymbiotic theory, _____ were/was originallyphotosynthetic bacteria.a. ribosomesb. chloroplastsc. mitochondriad. the nucleusarrow_forward
- Which of the following consist of prokaryotic cells? a. bacteria and fungi b. archaea and fungi c. protists and animals d. bacteria and archaeaarrow_forwardHorizontal 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.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_forward
- which of the following are evidence that chloroplasts and mitochondria originated by endosymbiosis? A they have bacterial type DNA molecules, to cyanobacteria and Rickettsiarespectively B. they have bacterial type ribosomes c. chloroplasts and mitochondria replicate independently from the cell (they are "semiindependent) D. All of the above e. None the above Find the mismatched pair. A. Prokaryotic Organisms --Naked DNA in space denominated the nucleoid B. Eukaryotic Organisms-genomic DNA c. Prokaryotic Diganismspolycistronic is unmodified prior to translation D. Eukaryotic Organisms-monocistronic mRNA is modified before being translated E. Prokaryotic Organisms-generaly interrupted by introns (non-protein-coding sequences)arrow_forwardWhich of the following statements supports the concept of the endosymbiotic theory? A. Proteins may be trafficked within the endomembrane system. B. Ribosomes are present in the cytoplasm of prokaryotic cells and eukaryotic cells. C. Chloroplasts have many features in common with bacteria. D. Mitochondria can fuse together to form larger organelles within eukaryotic cells.arrow_forwardWhich of the following statements does not support how prokaryotes have a large amount of genetic variation A. The mutation rate in prokaryotes is not particularly high B. Prokaryotes have extremely short generation times and large populations C. They can exchange DNA with many types of prokaryotes by way of horizontal gene transfer D. They have a relatively small genomearrow_forward
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