Describe some of the hypotheses on the origin of life and the characteristics of early prokaryotes, eukaryotes, and multicellular organisms.

Q: Describe how the endosymbiotic theory explains eukaryotic cell evolution.

A: They consist of eubacteria and archaebacteria. Eukaryotes have complex internal organisation and…

Q: Mitochondria and chloroplasts contain some DNA, which more closely resembles prokaryotic DNA than…

A: Based on the fossil record, it was identified that all living eukaryotes are developed earlier from…

Q: Discuss the length of time prokaryotes were the dominant organisms living on earth.

A: Prokaryotic organisms are characterized by the absence of a well defined nucleus and membrane bound…

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: 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: The answer to the question of how eukaryotic cells evolved has been suggested in the Endosymbiotic…

A: The endosymbiotic theory was proposed by Lynn Margulis. This theory explains the origin of…

Q: Name several general characteristics that could be used to definethe prokaryotes.

A: Cells are the basic unit of life and all living organisms are made up of cells. There are some…

Q: Based on genes from O mitochordrial DNA the most accepted tree of life includes three domains.…

A: Mitochondria is a membrane-bound organelle that plays a vital role in producing energy for the cell.…

Q: What are the eons in which the following events occur? Origin of Earth. Oxygen appeared in the…

A: Eon is geologic time and it is such a long time that cannot measure. Firstly, the origin of the…

Q: Archaea are often found living in extreme conditions of heat, salt, and acidity, which are similar…

A: Introduction  Origin of life on earth can be traced back to 3.4 billion years ago and as we now know…

Q: Please, need help with the explanation of the answer: During Chemical Evolution, what would one…

A: Chemical evolution describes changes in entities that do not necessarily need to be able to…

Q: The first appearance of free oxygen in the atmospherelikely triggered a massive wave of extinctions…

A: An ecosystem is a large community of living organisms in a specific area in which the biotic and…

Q: Investigate and describe how prokaryotic cells photosynthesize without having chloroplasts.

A: This answer is for the first part of the question. In order to get the answer to the second part of…

Q: The introductory passage describes the identification of eukaryotic signature genes in…

A: Defining life can be challenging, as there are many different characteristics and properties that…

Q: Describe the hypothesized steps in the origin of eukaryotic cells.

A: Eukaryotes are multicellular organisms whose cells have membrane bound organelles, well-defined…

Q: What evidence supports theidea that the major organelles of eukaryotes were onceBacteria?

A: Endosymbiotic theory states that there are certain organelles present inside the present eukaryotic…

Q: List several ways that prokaryotes have influenced evolution

A: Answer: Introduction:  The first prokaryotes were adapted to the extreme conditions of early earth.…

Q: Discuss the collection of properties that are used to define life andthe prokaryotic cell structures…

A: Life means that the organism is able to multiply and produce new organisms.

Q: Show some functions of the tetrahymena hammer head ribozyme, the L-19IVS ribozyme and 28S ribosomal…

A: Hammer head ribozyme: *Hammerhead ribozymes are small, catalytic RNAs  undergoes self-cleavage of…

Q: Which of the following pairs of taxa are most closely related?   A. Eubacteria and Archaea   B.…

A: Taxa are defined as the group or set of one or more population of a specific organism to form or…

Q: Write essay detailing history of eukaryotes and prokaryotes lack introns.

A: Introns are nucleotide sequences in DNA between two exons. They are found in eukaryotes only. They…

Q: Explain how the origin of eukaryotic cells involved a unionbetween bacterial and archaeal cells.

A: Answer- The eukaryotic cells are evolved from the prokaryotes.

Q: How is origin of life attributed to LIGHT and WATER? Give a detailed explanation.

A: The origin of life is still a mystery and not proved. There are many theories that are suggested by…

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: 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: Describe the hypothesized steps in the origin of eukaryote cells.

A: Biogeny or biological evolution refers to the origin of first biological cell from non -living…

Q: List 3 posttranscriptional changes in eukaryotes

A: Posttranscriptional modifications is a set of processes through which RNA molecule is recognized for…

Q: List at least one species of each eukaryotic supergroup that isimportant to human life.

A: The eukaryote Tree of Life (eToL) gives the phylogeny belonging to eukaryotic lineages of all kinds.…

Q: Discuss structural adaptations that have increased the complexityof prokaryotic cells.

A: Prokaryotes includes the unicellular organisms in which nucleus is not enclosed in nuclear membrane

Q: Do plants and animals have a common multicellular ancestor?

A: Yes plants and animals have common ancestor.plant cells are characterised by cell wall and…

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: 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: What does Oparin – haldane hypothesis about origin of life suggests.

A: The Oparin-Haldane theory of the origin was discovered by two scientists Aleksandr I. Oparin and J.…

Q: distinguish domain Eukarya from the 2 prokaryotic domains (Bacteria and Archea). Describe and…

A: * the three domain system proposed by Carl worse. * It includes bacteria,archae and eukaryota.

Q: Which of the following organisms appeared on earth first?     Prokaryotes     Eukaryotes…

A: Earth is considered to be the 4.5- 5 billions year old and is the habitat of vast form of lifes.

Q: how single-celled eukaryotes became multicellular organisms

A: The first evolved cell on the earth was a prokaryote.

Q: How do eukaryotic cells differ from bacteria and archaeons, and how do these differences explain the…

A: In the living world, we see a large number of microorganisms, animals and plants. These organisms…

Q: What information obtained from the Lokiarchaeotametagenome associate it with the origin of…

A: Lokiarchaeota belongs to the phylum of Archaea.  This phylum includes members mostly from the deep…

Abiogenesis