Last common ancestor - Study guides, Class notes & Summaries

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...

BIOL 1P91 Exam Review UPDATED Exam Questions and CORRECT Answers Origin of life - CORRECT ANSWER- earth is 4.5 billion years old chemical and fossil evidence suggests life originated as early as 3.85 billion years ago LUCA (last universal common ancestor) - CORRECT ANSWER- Has DNA, RNA, Protein, carbohydrates, and lipids genetic information flows identically in all current living organisms on earth stored in form of DNA and RNA What comes first during the emergence of life? - CORRECT A...

Dr. Keck studies - ANSWER Ichthyology 7 criteria for life - ANSWER Organization, Metabolism, Growth, Homeostasis, Response to Stimuli, Adaptation, Reproduction How are bacteria, archaea, and eukaryotes are related - ANSWER Last Universal Common Ancestor (LUCA) timeline for early earth: earths formation and the first single celled organisms - ANSWER 4.5 bya Earth was formed, 4 bya the crust was solidified, 3.5 bya we find the oldest fossils of microorganisms (all of these are prokaryotes...

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...

The study of evolutionary relationships among organisms is called ______. - phylogeny The three cell types discussed, eukaryotes, archaea, and bacteria, all derived from ______. - Last Universal Common Ancestor Organisms called parasites are ______. - always harmful to their host Which of the following does not indicate microbe involvement in energy and nutrient flow? - Thermal hot springs warmed by heat from earth's interior The subatomic particles that surround the nucleus are the ______....

Properties of all cells - growth, metabolism, and evolution. growth - multiply within hours metabolism - capture light energy by doing enzymatic reactions evolution - changes in their DNA that encodes differences that change over time. LUCA - Last Universal Common Ancestor prokaryote - before the nucleus eukaryote - after the nucleu

Opens tax Microbiology Test Bank Chapter 1 : An Invisible World Chapter 2 : How We See the Invisible World Chapter 3 : The Cell Chapter 4 : Prokaryotic Diversity Chapter 5 : The Eukaryotes of Microbiology Chapter 6 : Acellular Pathogens Chapter 7 : Microbial Biochemistry Chapter 8 : Microbial Metabolism Chapter 9 : Microbial Growth Chapter 10 : Biochemistry of the Genome Chapter 11 : Mechanisms of Microbial Genetics Chapter 12 : Modern Applications of Microbial Genetics Chapter 13 :...

Biol 1001 - Midterm 1 Questions and Answers Graded A+ 1. **What defines an organism?** - An organism is a living entity composed of cells. 2. **What are the five key characteristics of living organisms?** - The five key characteristics are: having cells, the ability to replicate, undergoing evolution, possessing genetic information, and utilizing energy. 3. **How is a theory defined in a scientific context?** - A theory is an explanation for observations that is supported by s...

Last Universal Common Ancestor (LUCA) CORRECT ANSWER Was a microbe of unknown type that lived about 4 billion years ago; the origin of all organisms. What is 16s small unit rRNA used for? CORRECT ANSWER It's used to study construct phylogenetic trees of organisms because it's highly conserved and hasn't changed much over time. Antonie von Leeuwenhoek CORRECT ANSWER Father of microscopy in 1620 Increased surface area like folded membranes CORRECT ANSWER How do larger cells maximize di...

_____________________ interprets the information in mRNA into the protein sequence - ️️Transfer RNA (tRNA) A gel matrix made of agarose or polyacrylamide does what? - ️️Slows the movement of the molecules - Larger molecules move more slowly through the gel than smaller molecules A. thaliana can be genetically manipulated using the bacterium - ️️Agrobacterium tumefaciens, which can inject DNA into the plant cells After multiple rounds of PCR, the vast majority of molecules have th...