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MCB 3020 Exam 1 Study Guide with Complete Solutions
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MCB 3020 Exam 1 Study Guide with Complete SolutionsMCB 3020 Exam 1 Study Guide with Complete SolutionsMCB 3020 Exam 1 Study Guide with Complete SolutionsMCB 3020 Exam 1 Study Guide with Complete SolutionsMCB 3020 Exam 1 Study Guide with Complete Solutionsdefine microbiology - ANSWER - the branch of...

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  • August 3, 2024
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  • 2024/2025
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  • mcb 3020 exam 1 study guide with complete solution
  • mcb 3020 exam 1 study guide stuvia
  • define microbiology answer the branch of biolo
  • how does microbiology differ from other fields of

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MCB 3020 Exam 1 Study Guide with Complete
Solutions

define microbiology - ANSWER - the branch of biology that studies microbes



how does microbiology differ from other fields of biology? - ANSWER - can be distinguished from other
fields based on:

1. the size of the organisms studied

2. the techniques used to study them



what are two types of microbes and examples of each? - ANSWER - cellular organisms- made up of cells

-include fungi, protists, bacteria, and archaea



acellular organisms- not made of cells

-includes viruses, viroids, satellites, and prions



what are the following composed of?

virus

viroid

satellite

prion - ANSWER - virus- protein and nucleic acids



viroid- RNA only



satellite- nucleic acids



prion- proteins

, what are prokaryotes and eukaryotes? how do they differ? - ANSWER - eukaryotes are organisms with
cells that have DNA in a membrane-bound organelle, (nucleus) and have other true membrane-bound
organelles.



Why do scientists stain specimens? - ANSWER - allows scientists to increase the specimen's visibility,
accentuate specific morphological features and preserve the specimen



why fixate specimen on slides? what are the two ways to do this? - ANSWER - to ensure the specimen is
in position and to preserve internal/ external structures.



prokaryotes are organisms made up of a single cell lacking membrane-bound organelles and nucleus



name and describe the three domains of life. note differences. - ANSWER - domain eukarya- eukaryotic;
have cells and organized structures called organelles; have multiple linear chromosomes; more complex
morphology



domain archaea- prokaryotic; single-celled organisms with no nucleus or organelles; have a single and
circular chromosome; found in extreme conditions; identified by Carl Woese




domain Bacteria- prokaryotic; single-celled organisms with no nucleus or organelles; have a single and
circular chromosome



what scientist identified that the phylogenetic tree is composed of these three domains of life? how did
this scientist discover this? - ANSWER - Carl Woese identified the domain Archaea from Bacteria by using
ribosomal RNA sequencing data.



which domain is found in extreme environments? - ANSWER - Archaea



what does LUCA stand for and what branch is it found on? - ANSWER - Last Universal Common Ancestor-
common ancestor of all three domains of life.

-States domains Archaea and Eukarya diverged from common ancestry and Bacteria evolved
independently

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