Origin of eukaryotes - Study guides, Revision notes & Summaries

MMSC 490 Exam Questions with Verified & Updated solutions The feature that most clearly distinguishes eukaryotes from prokaryotes is the presence of .......... in eukaryotic cells. RNA Molecules Ribosomes Oxidative phosphorylation Nucleus - Answer️️ -Nucleus Cytoplasmic organelles are... Present in prokaryotic cells an absent in eukaryotic cells Absent in prokaryotic cells and present in eukaryotic cells Absent in both prokaryotes and eukaryotes Present in both prokaryotic and euk...

First cells would have been autonomous, membrane-bound units capable of self-replication requiring - ANSWER-nucleic acids RNA - ANSWER-• RNA has catalytic activity (ribozymes) .• First enzymes could have been RNA. • Earliest self-replicating molecules could have been RNA. • Proteins are better catalysts and DNA is more stable than RNA Earliest organisms: - ANSWER-• Probably primary heterotrophs .• Derived nutrients from the environment. • No need to synthesize own food aut...

MMSC 490 Exam Questions with Verified & Updated solutions The feature that most clearly distinguishes eukaryotes from prokaryotes is the presence of .......... in eukaryotic cells. RNA Molecules Ribosomes Oxidative phosphorylation Nucleus - Answer️️ -Nucleus Cytoplasmic organelles are... Present in prokaryotic cells an absent in eukaryotic cells Absent in prokaryotic cells and present in eukaryotic cells Absent in both prokaryotes and eukaryotes Present in both prokaryotic and euk...

Edward Jenner - Developed small pox immunization using cowpox agent Paul Ehrlich - sought a " magic bullet" to destroy pathogens Alexander Fleming - discovered penicillin Joseph Lister - Pioneered aseptic surgery John Snow - father of epidemiology (cholera in London) Ignaz Semmelweis - Pioneered asepsis by discovering that hand washing prevented streptococcal infections in obstetric patients Robert Koch - Pioneered the cultivation of bacteria on solid media Louis Pasteur -...

Developed smallpox immunization using cowpox agent - Edward Jenner Sought a "magic bullet" to destroy pathogens & not host - Paul Ehrlich Discovered penicillin - Alexander Fleming Pioneered aseptic surgery, Prevented surgical infections by using mists of phenol - Joseph Lister Father of Epidemiology (Cholera in London) - John Snow Pioneered asepsis by discovering that hand washing prevented streptococcal infections in obstetric patients - Ignaz Semmelweis Pioneered the culti...

Until the 19th century, what the predominating theory about the origin of life? Correct Answer-Vitalism: the idea that there is a force that produces life which is indepent from chemical or ohysical processes Which functional groups are not found in biochemistry nut in organic hcemistry? Correct Answer-Alkyl halides and acyl chlorides What is the only thing that distinguishes a eukaryote form a prokaryote? Correct Answer-A nucleus Which of the following can be found in both eukaryotes a...

The theory of evolution includes which of the following principles? A) Evolution is not directed toward a specific goal. B) Evolution is ongoing, and is constrained by its past. C) Evolution requires some sloppiness for adaptation to changes. D) A and B. E) A, B, and C. - Answer- E) A, B, and C. Which three cellular components are present in both prokaryotes and eukaryotes? A) ribosomes, chloroplasts, mitochondria. B) nucleus, ribosomes, RNA. C) RNA, DNA, ribosomes. D) endoplasmic re...

AAMI Introduction to Microbiology Final Review Questions and Answers Rated A The science of life and living organisms, including their structure, function, growth, origin, evolution, and distribution is called: Biology The science of unicellular organisms that can be only seen with the aid of a microscope is called: Microbiology The study of minute unicellular organisms that resemble plants but contain no chlorophyll is called: Bacteriology The study of fungi is called: Mycology ...

carl woese correct answers what scientist discovered the archael domain? 16 sRNA gene correct answers what gene sequence did Woese use to determine that archaea were evolutionary different from bacteria? false correct answers T/F: archaea are only found in extreme environments Asgard archaea correct answers what group of archaea are eukaryotes most closely related to? a hydrothermal vent system correct answers what environment was the first Asgard archaeon discovered in? electrica...

Bio 181 Exam 5Free nucleotides are added at the replication fork of DNA using the enzyme - correct answer DNA polymerase Which of the following is the DNA at the end of linear chromosomes? - correct answer telomere In the semiconservative replication of DNA, each of the new double strands of DNA has - correct answer one original strand and one newly assembled strand Nucleotide excision repair is particularly important when thymine dimers are formed from exposure to - correct answer UV l...