One of the simplest definitions of a life-form is anything with the capacity to reproduce and regulate itself. Before life began, the complex organic, or hydrocarbon-bearing, molecules that makeup RNA and DNA, the building blocks of life, must have formed. No one knows exactly how life is formed from these molecules, but many ideas have been put forward. As you enter this area, go toward the large video screen on the right and explore the “Life at the hydrothermal Vents” label deck. Some scientists theorize that life begins at deep-sea vents. Find three lines of evidence to support this claim.

Q: RNA is often characterized as being the first“biologically active” molecule. What two properties or…

A: The RNA world is a hypothetical stage in the evolutionary history of life on earth, in which self…

Q: A scientific hypothesis must be testable; there must be some observation or experiment that could…

A: Note - Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: Would it be possible for life to arise in the same manner on Earth today as it did 3.5 billion years…

A: Yes, the macromolecules required for life to arise would be stable in our current aerobic…

Q: Match the letter on the tree of life below to the description. Animals Fungi Plants Protists Archaea…

A: Inroduction In five kingdom classification there are five kingdoms, monera, protists, fungi, plant…

Q: Which of the following illustrates the unity observed in organisms with a common ancestor? Flamingos…

A: Common ancestors or common descents can be defined as the factor in which one organism is related to…

Q: What are the basic requirements for an organism to categorized as biologically alive? Such as…

A: It is very difficult to define life. Life may be regarded as a property of living things which…

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: What is an analogy that can be used to help explain the risks associated with antibiotics? An…

A: Strong drugs called antibiotics are used to treat bacterial infections and save lives. However, they…

Q: How many valence electrons does calcium (Ca) have? * O 20 4. 2. This is a required question Most of…

A: How many valence electrons does calcium have? Answer ) two .

Q: Name three different molecules synthesized by the cells of vertebrates and briefly state each one’s…

A: The cells of an organism are made up of different classes of biological molecules. Each molecule…

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: The finding that all organisms share the same genetic code provides evidence that all descended from…

A: All living things found thus far use either DNA or RNA and the basic coding sequence used is the…

Q: There are  various components of the biosphere such as ecosystem, species and communities. Define…

A: The biosphere is the area of Earth where organisms live. For example- the above and below the…

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: Researchers have reported advances in their attempts to synthesize life from scratch in a…

A: There are multiple questions that can be answered by this experiment. But the principal question…

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: 2011 Question #1: During an investigation of a fresh water lake, and AP Biology student discovers a…

A: Introduction Organelles are small structures that work together in the cytoplasm to carry out life…

Q: The smallest particle of an element that retains all theproperties of that element is…

A: Biology is the study of living organisms. It deals with a wide array of fields like anatomy,…

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: vidence that glycolysis evolved before the eukaryotic cell evolved?

A: Eukaryotic cells are cells that have a definite nucleus and specialized organelles. Glycolysis is…

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: In lecture, we covered the metabolic process of aerobic cellular respiration as well as the…

A: The glycolysis is the process that occurs in the cytoplasm in both aerobic and the anaerobic…

Q: In addition to a molecule that can both store information and serve as an enzyme, early cells needed…

A: INTRODUCTION Given that organic solvents were abundant on early Earth, as was water, and that…

Q: You are digging for fossils and found an ancient one with well preserved cellular contents. After…

A: The objective of the question is to identify the group of organisms to which a fossil belongs based…

Q: Choose the most appropriate statement that matches each term. a substance that occurs only or…

A: Here, it is required to select the appropriate sentence for each term.

Q: Write if the statement is true and change the underlined word if false. The Miller-Urey experiment…

A: Introduction 1. The Miller-Urey experiment:- The Miller–Urey experiment was a chemical experiment…

Q: Explain why the answer is correct. For one celled eukaryote organisms to evolve into new and more…

A: Unicellular eukaryotes are single-celled bacteria containing a nucleus, mitochondria, and other…

Q: Which Of the following is not a reason why micro organisms  are commonly able to evolve very…

A: Microbes are microscopic organisms that have very diverse and significant roles in the world. Often…

Q: What evidence would you look for on Enceladus, Europa or Mars that would tell you that life may have…

A: Europa is the smallest of four Galilean moons orbiting Jupiter. Enceladus is the sixth-largest moon…

Q: - How much time does it take for 1 half-life to occur?   -Approximately how many half-lives are…

A: Carbon is the element that is most commonly found in organic molecules. All organisms have a carbon…

Q: unknown species? Make an output on how you can help in the protection of the unknown species in the…

A: A species of animal or plant that is seriously at risk of extinction are called endangered species.

Q: Miller and Urey

A: In 1952, a University of Chicago chemist named Stanley miller and Harold Urey conducted a famous…

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

A: Genesis of life is the concept that tries to provide an answer to how life started, especially on…

Q: Which of the following is the last step in the Oparin-Haldane Model for the beginning of life?   a.…

A: oparin and haldae suggested the  origin of life on earth , via the abiotic evolution .

Q: 31. What following health practice should one do to maintain a healthy endocrine system? * a. eat…

A: The endocrine system is made up of glands, which are organs that produce hormones. Glands produce…

Q: Based on what geologists have learned about Earth history, levels of oxygen in Earth's ancient…

A: Glycolysis is the process in which glucose is converted into pyruvate by a 10 step process and every…

Q: 1. Design a cell/a system of cells using the following to show explicitly. Respiratory system,…

A: Introduction: The cell is the structural and functional unit of the body. Because it helps in…

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

A:

Q: In the transition of Chemical Evolution to prokaryotic cells, phospholipids had a critical role. The…

A: Cell membranes serve to organize and protect cells. Every cell has an exterior plasma membrane that…

Q: As result of their evolutionary history, mitochondria possess their own genome.~2 billion years ago…

A: Through the process of oxidative phosphorylation, chemical energy is generated by the mitochondria.…

Q: Choose the word that corresponds to the definition. v A chemical that contains a carbon double…

A: Since the words are missing answers are from a general prospective.    Biology is the branch of…

Q: A mitochondrion evolved from an aerobic bacterium. Select one: True False

A: Mitochondrion is a round to egg shape organelle present in nearly all eukaryotic species' cells.By a…

Microbes

Microbes are microscopic living organisms that can only be detected with the help of specialized laboratory equipment called a microscope. These living organisms are so small that they are not visible to the naked eye.