A)The Miller-Urey experiment in 1953 proved that Group of answer choices multicellular organisms can evolve from unicellular ones   living cells could arise from non-living substances   organic molecules important to living things could form from a "hot soup" of simple substances   conditions on early Earth were not as inhospitable as biologists of the time generally believed   a source of energy was not required in order for life to develop on Earth

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: In their laboratory experiments of simulations of early Earth, Miller and Urey observed the abiotic…

A: Miller and Urey Experiment was performed to demonstrate the chemical origin of life. In the…

Q: The hypercycle model explains which of the following?     A) How the evolutionary transition from…

A: A hypercycle can be understood as an unique demonstrate of organization of self-replicating…

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: Which of the following conclusions about this form of life would be most justified?

A: Any life form that exists must have some form of central dogma for functioning and survivability,…

Q: ENDOSYMBIOTIC THEORY is the evolution theory that includes a larger and one smaller cell. The larger…

A: The endosymbiotic theory explains how two previously independent structures form a symbiotic…

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: Direct evidence of life on early Earth comes from fossils of microorganisms that lived 3.5 billion…

A: The earliest life structures we are aware of were minuscule organic entities (microorganisms) that…

Q: When a human child goes through puberty, the organs associated with reproduction grow and become…

A: The human body is constantly growing or is repaired. Wear and tear of the body need repair while the…

Q: Which of the following is evidence that eukaryotes and prokaryotes share a common ancestor?   a.All…

A: The cells of both prokaryotes and eukaryotes possess common structure organization (e.g presence of…

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: Evolution is one of the major unifying concepts of modern biology. Explain the mechanisms that lead…

A: Evolution is a change in the heritable characteristics of biological populations over successive…

Q: Without an oxygen-free atmosphere, the organic compounds that started the story of life never would…

A: The Earth has been significantly altered by life. Organisms have influenced the composition of the…

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: What did the biology experiments on the Viking landers discover? A. Although Mars's soil is…

A: The Viking Program consisted of two American space probes, Viking 1 and Viking 2, that were sent to…

Q: Regarding early life on Earth, A) microbial life existed for billions of years before plant and…

A: The early earth atmosphere was probably mostly carbon dioxide with little or no oxygen. There were…

Q: Which statement is FALSE?   Question 81 options:   The evolution of multicellularity took place…

A: Introduction :-    Option A is correct. Explanation :- This is because About 3.5 billion years…

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 first single-celled organisms on Earth probably evolved (a) 3,700 years ago (b) 3.7 million years…

A: Evolution is a process of slow and gradual change over a period of time. There are many pieces of…

Q: Four billion years ago, the Earth was a thin-crusted inferno. Which probable stage of physical and…

A: Solar system was originated around 4.6 billion years ago from contraction of rotating gas and dust…

Q: Select the false statements from the following regarding the RNA hypothesis of chemical evolution.…

A: RNA hypothesis was given by Carl Woese, Francis Crick, and Leslie Orgel in the 1960s. It is believed…

Q: Which of the following is not true concerning the mitochondria and chloroplasts and is not evidence…

A: Bacteria are prokaryotic organisms. They lack the cellular organelles like golgi bodies and…

Q: Why was it believed that life began in the seas and not in land or air? * Land and air were…

A: Option a is correct  Land and air were inhospitable places for life during the archean eon.

Q: During the Early _______________, life consisted of prokaryotic cells, but by the end of this…

A: The major evolution evens since the origin of the earth have been categorized into three major eras.

Q: 1. 3 domains a. ancient,oldest living forms known; able to live in extreme conditions b. Inventor of…

A: In Biology the discovery of cell is very important step that opens the idea of the structure of a…

Q: Cyanobacteria was responsible for the increase in oxygen levels billions of years ago. They play a…

A: Answer : The Cyanobacteria were quite simple organism however carried out a crucial role in…

Q: Which of the following provide evidence for an endosymbiotic origin of mitochondria and…

A: This hypothesis states that some of the organelles in eukaryotic cells like mitochondria and…

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 term Anthropocene implies that

A: Epoch, in general, termed as a very important period of time in history

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: Based on this figure, which statement is true? The diversity of organisms on Earth has increased…

A: A phylogenetic tree is a diagram used to reflect or study the evolutionary relationships among…

Q: Asian tiger mosquito  Trace its origin and evolutionary history or changes in the species. Describe…

A: Note- we are supposed to answer 3 subpart of a question according to our guidelines.  Please repost…

Q: Which of the following is thought to be a necessary precursor for Eukaryotes to evolve?…

A: Introduction :-   Eukaryotes are organisms whose cells have membrane-bound organelles in addition to…

Q: Match the forms of life below with the earliest (approximate) time that it existed. Note: the earth…

A:

Q: The theory of evolution states that all organisms change over the course of time due to…

A: Evolution is the process of heritable change in the characteristics of an organism. Such changes…

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: Based on what you know about osmolarity, what adaptations would you expect to coincide with a single…

A: Salts are important for homeostasis in aquatic organisms such as fishes. It helps in restoring…

Q: Approximately how long ago did homo sapen (humans) first  appear on Earth 2,000 years ago 5-7…

A: Homo sapiens are the species to which all modern human beings belong. The average brain mass of H.…

Q: You are studying the evolution of species. After performing DNA analysis, he discovers a gene that…

A: DNA analysis It is also called DNA profiling. This is a process that is used to determine the…

Q: The theory of evolution states that all organisms change over the course of time due to…

A: Living organisms are the most unique forms that exist only on the planet earth. The atmosphere of…

Q: The Miller experiment did not create life, nor did the gases used resemble Earth’s first atmosphere…

A: In 1952 Miller and urey conducted experiments to hypothesize the formation of complex organic…

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: and biological evolution.     Both chemical and biological evolution are defined by change over…

A: Yes, chemistry can give complex molecules of life. The best example is metabolism. For chemical…

Q: All living things are divided into three domains: bacteria, archaea, and eukarya. They have several…

A: Early earth is not rich with oxygen until photosynthetic bacteria arrived after that oxygen levels…

Q: The membrane structure that eventually evolved into the double nuclear membrane of the eukaryotes…

A: Introduction The nuclear envelope, also known as the nuclear membrane, is a pair of lipid bilayer…

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: Place the following events in the order in which they are thought to have occurred in early…

A: Evolution is a continuous process and we are still evolving. Evolution is nothing but adapting to…

Q: A pond starts to dry up, and the turtles living in the pond start migrating to a new pond. What…

A: Irritabilty is defined as ability of a living organism for changing environment conditions.

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…

Abiogenesis