Last common ancestor Study guides, Class notes & Summaries
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BMSC 210 Midterm 1 Study Guide | 100% Correct Answers | Verified | Latest 2024 Version
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What are properties of all cells? - 
Growth 
Metabolism 
Evolution 
LUCA - Last universal common ancestor 
How do we decide how the phylogenetic tree is drawn? - Use ribosomes. All organisms have it and it 
has been the same for billions of years 
What are the domains? - 
Bacteria 
Archaea 
Eukarya 
What defines the domains of cells? - Their rRNA sequencing 
What domains are most closely related? - Archaea and eukarya 
What emerged from Archaea? - Eukarya 
How do we know kw when oxygen appeare...
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Life 103 Exam 1 CSU Questions And Answers With Verified Study Solutions
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Evolution - The change in allele frequencies in a population over time 
Selection - Changes in allele frequencies due to organisms with advantageous alleles reproducing 
more successfully than organisms with other alleles 
Genetic Drift - Random changes in allele frequencies in a population 
Mutation - The source of all new allelic diversity 
Migration - Movement of alleles between populations 
Adaptation - A trait that evolves by selection for a particular function (because it increases fitness...
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MIC 102 Midterm questions with correct answers
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Microbe CORRECT ANSWER -Free living organisms so small that they are only visible under the microscope. 
-Viruses are not really microbes- they lack one key quality of living cells; the capacity to main their bodily integrity throughout their life cycle. 
-Exceptions: Epulopiscium fishelsoni is huge (600+ um), Mycobacterium leprae is not free living. 
-Bacteria, Archaea, Fungi, Protists. 
 
LUCA CORRECT ANSWER -Last Universal Common Ancestor= microbe 
-About 4 bya 
-Core features for cellular...
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Bis 2c Lab Practical UC Davis test with 100- correct answers
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which are not cephalized 
mussels, clams, 
 
 
 
Hemimetabolous 
(of an insect with aquatic young) undergoing incomplete metamorphosis in which the young does not resemble the adult 
 
 
 
 
holometabolus 
dramatic change 
 
 
 
Cnidaria 
cnidocytes, radial symetry, incomplete gut, sting, anemonies, jellies, 
 
 
 
monophyletic 
ALL descendants came from one common ancestor 
 
 
 
paraphyletic 
Pertaining to a group of taxa that consists of a common ancestor and some, but not all, of its descend...
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Microbiology Straighterline Final Questions And Revised Correct Answers
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Microbiology Straighterline Final 
Questions And Revised Correct 
Answers 
The study of evolutionary relationships among 
organisms is called ______. - CORRECT ANS : 
phylogeny 
The three cell types discussed, eukaryotes, 
archaea, and bacteria, all derived from ______. - 
CORRECT ANS : Last Universal Common Ancestor 
Organisms called parasites are ______. - 
CORRECT ANS : always harmful to their host 
Which of the following does not indicate microbe 
involvement in energy and nutrient flo...
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Life 103 Exam 1 CSU questions and answers all are correct 2024 graded A+
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Science - Answer-recognizing patterns in the natural world and understanding the mechanisms that give 
rise to those patterns 
The Diversity of Life - Answer-Patterns 
How plants and animals work - Answer-Mechanisms 
Evolution - Answer-the change in allele frequencies in a population over time 
Four Mechanisms of Evolution - Answer-Selection, Genetic Drift, Mutation, and Migration 
Selection - Answer-changes in allele frequencies due to organisms with advantageous alleles reproducing 
more succe...
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STRAIGHTERLINE MICROBIOLOGY MIDTERM REVIEW
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A diagram of the three domains (Bacteria, Archaea, Eukarya) proceeding from the Last Universal Common Ancestor would show Archaea 
 
a. as the original cells from which the others derived 
b. branching off the domain Eukarya 
c. branching off of the domain Bacteria - Answer - b. branching off the domain Eukarya 
 
A frameshift is caused by _____ mutations 
 
a. missense and insertion 
b. missense and nonsense 
c. nonsense and deletion 
d. deletion and insertion 
e. insertion and nonsense - Answ...
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Life 103 Exam 1 CSU Questions and Answers Already Passed
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Life 103 Exam 1 CSU Questions and 
 
Answers Already Passed 
 
Science recognizing patterns in the natural world and understanding the mechanisms that 
give rise to those patterns 
 
The Diversity of Life Patterns 
 
How plants and animals work Mechanisms 
 
Evolution the change in allele frequencies in a population over time 
 
Four Mechanisms of Evolution Selection, Genetic Drift, Mutation, and Migration 
 
Selection changes in allele frequencies due to organisms with advantageous alleles 
rep...
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Bio 182 FINAL Questions With Complete Solutions
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What type of trait is not useful to construct a phylogenetic tree? correct answer: Analogous traits 
 
Which of the following traits are not unique to humans among the great apes? correct answer: Lack of a tail 
 
How complete is the fossil record of life on earth? correct answer: It is an incomplete record of Earth's history 
 
What is a polyphyletic group of organisms? correct answer: A group that does not include a common ancestor. 
 
What is the biological species concept based on? corr...
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Life 103 Exam 1 CSU Questions Perfectly Answered!!
- Exam (elaborations) • 15 pages • 2024
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Science - Answer-recognizing patterns in the natural world and understanding the mechanisms that give 
rise to those patterns 
The Diversity of Life - Answer-Patterns 
How plants and animals work - Answer-Mechanisms 
Evolution - Answer-the change in allele frequencies in a population over time 
Four Mechanisms of Evolution - Answer-Selection, Genetic Drift, Mutation, and Migration 
Selection - Answer-changes in allele frequencies due to organisms with advantageous alleles reproducing 
more succe...
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