MCB 3020|76 Exam 1 study guide Quiz Questions Correctly Answered|2024
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Course
MCB 3020
Institution
MCB 3020
define microbiology - ️️the branch of biology that studies microbes
how does microbiology differ from other fields of biology? - ️️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 an...
MCB 3020 |76 Exam 1 study g uide Quiz Questions define microbiology - ✔ ✔ the branch of biology that studies microbes how does microbiology diff er from other fields of biology? - ✔ ✔ 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? - ✔ ✔ cellular organisms - made up of cell s -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 - ✔ ✔ virus - protein and nucleic acids viroid - RNA only satellite - nucleic acids prion - proteins what are prokaryotes and eukaryotes? how do they differ? - ✔ ✔ eukaryotes are organisms with cells that have DNA in a membrane -bound organelle, (nucleus) and have other true membrane -bound organel les. 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. - ✔ ✔ 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? - ✔ ✔ Carl Woese identified the domain Archaea from Bacteria by using ribosomal RNA sequencing data. which domain is found in extreme environments? - ✔ ✔ Archaea what does LUCA stand for and what branch is it found on? - ✔ ✔ 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 how far back do the earliest fossils of microbial life date back to? - ✔ ✔ 3.5 billion years ago what is the central dogma? - ✔ ✔ DNA contains genetic info that is TRANSCRIBED in mRNA and then TRANSLATED to make proteins DNA ->(transcription) ->mRNA ->(Translation) ->protein
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