Which of the following steps has not yet been accomplished byscientists studying the origin of life?(A) synthesis of small RNA polymers by ribozymes(B) formation of molecular aggregates with selectivelypermeable membranes(C) formation of protocells that use DNA to direct thepolymerization of amino acids(D) abiotic synthesis of organic molecules

Q: One of the simplest definitions of a life-form is anything with the capacity to reproduce and…

A: A UCL-led research team has created protocells in hot, alkaline seawater, adding to evidence that…

Q: Many scientists claim that the synthesis of the first organic molecules from inorganic precursors…

A: Null hypothesis is a statement which is based upon certain observations and facts.

Q: What is a domain ? What are the three domains of life on Earth? Explain briefly.

A: Domain is the highest taxonomic rank in the hierarchical biological classification system, above the…

Q: You are examining an organism you believe to be an animal. Which of the following would NOT support…

A:

Q: Describe the hierarchical organization of life. How does this organization lead to the emergence of…

A: The hierarchical organization can be defined as the organizational structure where every entity in…

Q: Chronologically arrange the evolutionary events with 1 being the earliest and 6 the most recent.…

A: Chronological event describe the timing of event as it occurred in the event of time period.…

Q: In the 1950s, scientists Miller and Urey conducted a classic experiment in which water, methane,…

A: Evolution is the study of origin of earth, origin of life on earth and relationship between…

Q: How does Biogenetic theory explain the origin of life?

A: The biogenetic theory is a scientific theory that seeks to explain the origin of life. According to…

Q: Why are information transmission, energy transfer, and evolution considered basic to life?

A: The unit of all life forms is termed the Cell. It helps the proper functioning of individuals from…

Q: lace the following organisms in the order in which they are thought to have appeared on the Earth…

A: The earliest life forms we know of were microscopic organisms (microbes) that left signals of their…

Q: During the first 600 million years of Earth history, enzymes, ATP , and other molecules could have…

A: The primitive earth was in the form of a red hot, solidified cloud containing free atoms. The…

Q: What kinds of evidence support the three-domain conceptof life?

A: The three domain system, proposed by Carl Woese categorized the living organisms on the basis of…

Q: Most likely the proto-cells were little more than membrane sacs protecting information-storing…

A: The evolution of the cell membranes plays a very important role in the adaptation of modern cellular…

Q: The more DNA and protein sequences two organisms share, the ________________ closely related they…

A: Evolution is a theory which represents the development of new organisms from pre-existing forms and…

Q: Simple systems (of this type) of RNA , enzymes, and coenzymes have been created in the laboratory.…

A: Chemical evolution refers to changes in entities that do not have to be able to reproduce…

Q: "The “Omics” Revolution Has Created a New Era of Biological Research". Explain how ?

A: The term 'omics' is referred to as a collective technology that is used for the characterization and…

Q: Compare and contrast the evolutionary theory and creationism theory on the origin of life molecules,…

A: INTRODUCTION Creatoinism The creationism theory state that the whole universe, Earth and life in it…

Q: what simple organic molecules were likely the precursors of life? a. water and proteins b. amino…

A: The two important aspects of life are its origin and evolution. The branch of life science, which…

Q: Place the following events of the beginning of life in their correct order. - organic polymer form -…

A: Life was begined with the inorganic molecules which further interact to form organic molecules which…

Q: With regard to the origin of life, why are biologistsinterested in the prebiotic synthesis of…

A: Introduction The Oparin-Haldane model suggested that under the highly reducing atmosphere of…

Q: Identify the stages of the origin of life hypothesis.

A: BASIC INFORMATION EVOLUTION The theory of evolution was first given by the Jean Baptist de Lamark.…

Q: Why do many people, even biologists, find it difficult to define life?

A: Life can be defined as a period between birth and death for some people. Other can define it as…

Q: Why is the advent of cyanobacteria considered a critical step in evolution?

A: Cyanobacteria, conjointly called division, are a phylum of prokaryotes consisting of each…

Q: The most pivotal event in the history of life on Earth, allowing for the emergence of eukaryotic…

A: A Eukaryotic cell is a Membrance bound organelle like Endoplasmic Reticulum, Mitochondria and…

Q: The TATA-binding protein (TBP) is thought to be necessary for transcription in all eukaryotic cell…

A: The TATA-binding protein is a generic transcription factor that binds specifically to the TATA box…

Q: Why are scientists interested in the primordial synthesis of organic molecules when it comes to the…

A: Introduction: The Oparin-Haldane hypothesis proposed that inorganic molecules in the atmosphere of…

Q: Describe some of the hypotheses on the origin of life and the characteristics of early prokaryotes,…

A: The natural process through which life has developed from non-living materials, such as basic…

Q: Why was the development of enzymes fundamental to the evolution of life?

A: Answers:  ENZYMES = These are the chemical molecules produced by many microorganisms, When they…

Q: In the 1950s, Miller and Urey obtained support for the hypothesis that simple organic molecules…

A: Stanley Miller and Harold Urey conducted an experiment in 1953 to put Oparin and Haldane's theories…

Q: the landmark experiment by Miller and Urey, and various repeats of this experiment, did not…

A: Introduction: The mentioned experiment was carried out to understand the various ways in which the…

Q: Identify 5 organisms (plants or animals) from the Paleozoic Era and relate them to an organism…

A: Paleozoic Era Paleozoic means ancient life.  It is the earliest of the three geological eras of the…

Q: Imagine an ancient sunlit estuary rich in clay deposits. Countless aggregations of organic molecules…

A: Several hypotheses have been made in relation to life's origins on Earth. In 1936, Alexander Oparin…

Q: Which of these provides evidence of the common ancestry of all life? A) the ubiquitous use of…

A: One of the strongest evidences for common descent and ancestry comes from gene sequences.

Q: Be able to place the following events into their correct eon: Origin of the earth Origin of…

A: Eons are the longest portions of geologic time followed by the eras. Three eons are recognized: the…

Q: Which of the following occurred first in the history of life on earth? Colonization of land…

A: In the starting phase of formation of the earth, the planet was filled by reducing gases that did…

Q: Where does the material to construct these massive organisms come from?

A: An organism consist of an organized structure that reacts to stimulus, adapts, growth, reproduces,…

Q: Critics of evolution often cite the fact that several hypotheses are being tested to help explain…

A: Introduction  Evolution is the process of a species' features changing over numerous generations…

Q: how would you explain the relationship of life perpetuation to the evolution of life

A: Evolution in biology is described as the process by which all the living organisms living today have…

Q: According to the seven characteristics of life (1- composed of one or more cells, 2- compelx and…

A: There are seven basic necessities to satisfy in order to qualify as a living organism. Those 7…

Q: Based on the Origin of Life by John H. McClendonn, which of his theories is the most plausible?

A: Introduction John H. McClendon's Book, Origin Of Life, Is A Informational Book On The Origins Of…

Q: Why are archaebacteria called living fossils?

A: Introduction: "Archae" stands for "ancient", archaebacteria are thought to evolve from the very…

Q: Describe the step-wise process of how inorganic matter on primitive Earth evolved into…

A: The earliest evidence of life on Earth is believed to date back 4.2 billion years, implying that…

Q: "he following are four hypothesized events of the origin of life. Place them in the correct order.…

A: Origin of life is a long and gradual process. This is also called evolution. Characteristics of the…

Q: How did the development of Margulis' theory aid in our understanding of how complex organisms came…

A: Endosymbiotic theory  The theory is given by a Russian scientists, Konstantin Mereschkowski and…

Q: How does the autotroph hypothesis explain the origin of life?

A: Autotrophic hypothesis :- This theory states that first living organisms on earth were autotrophs…

Q: Which phylogenetic model proposes that all three domains of life evolved from a pool of primitive…

A: Phylogenetics is the investigation of transformative connections among organic elements regularly…

Q: If living cells were produced in a test tube from nonbiological components by chemical processes,…

A: The first cells that appeared on the earth are believed to be prokaryotic heterotrophic and are…

Q: What evidence exists for the structure of the Tree of Life?

A:

Q: The Miller-Urey experiment was a landmark step in our understanding of the origins of life. But what…

A: Introduction Stanley Miller and Harold Urey devised a test to put Oparin and Haldane's theories to…

Human Evolution

Human evolution is the process of evolution of humans from early man to anatomically modern humans. The process of evolution in humans leads to the gradual development of traits like bipedalism. Humans are the highly social animals that make them the most advanced animal on Earth.  Human evolution is an outcome of interaction among the following processes: