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: From the different types of monomeric building blocks of life which category is not covalently…

A: A covalent bond or molecular bond is a chemical link between two atoms where electron pairs are…

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: Which observation proves that a cell is a eukaryote? A) It contains DNA B) It contains ribosomes C)…

A: Cells are the basic unit of life as no living organism can have life without being cellular because…

Q: Which of the following is/are evidence that mitochondria and bacteria are descendants of bacteria?…

A: An endosymbiotic theory is a theory that explains how multiple cells come together to form a…

Q: In what order did events occur that led to life on Earth? (1) appearance of aerobic organisms, (2)…

A: C is possible right answer

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: Which of the following is NOT a characteristic of all living things? A) Acquires nutrients and…

A: Living organism obtain energy from nutrient . React to enviroment is characterstic of living thing .…

Q: Explain why the answer is correct.  For eukaryote cells to evolve into new types of eukaryotic…

A: Yes, you can you transfer to the question is e) all of these are true   Eukaryote means true nucleus…

Q: Which is true of ribosomes found in eukaryotic cells? They: A) contain DNA B) synthesize…

A: Introduction :- Ribosomes are mostly found bound to the endoplasmic reticulum and the nuclear…

Q: Serial endosymbiosis is the most supported theory on how the first eukaryotic cells evolved from…

A: The prokaryotes are eukaryotic organisms. The prokaryotic cells do not possess membrane-bound…

Q: The fact that a prokaryote has the ability to make a new protein that is placed in the cell membrane…

A: Prokaryotes are organisms in which cell do not have nucleus and organelles.  Prokaryotes are further…

Q: The three domains of life are Bacteria, Archaea, and Eukarya. Which of the following statements best…

A: Prokaryotes are organisms that belong to the domains Bacteria and Archaea. They are characterized by…

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

A: Endosymbiotic theory suggests that eukaryotic cell evolved from prokaryotic cell. This occurred when…

Q: The oxygen revolution changed Earth’s environmentdramatically. Which of the following took advantage…

A: The earth is approximately 4.54 billion years ago and the conditions at that time were not meant for…

Q: . You are discussing the choice of the "oil-eating" bacteria that you will use to clean the affected…

A: Introduction Every year, millions of birds, animals, and fish die as a result of oil spills. The…

Q: Here is the question: What was the likely source of the raw material incorporated into the first…

A:

Q: anyone please help me with all these questions) 2. As eukaryotic cells become more specialized, the…

A: As eukaryotic cells become more specialized, the nucleus is NOT important as the site of ; protein…

Q: Instead of 1 uniform definition, biologist use over 20 different definitions of "species". Why? A)…

A: There are about 7 definitions of species. In a broader sense species can be defined as a larger…

Q: In prokaryotes, after the ribosomes completes a synthesis, one would expect to find a) a new…

A: Ribosome is a very important cell organelle in both prokaryotic and eukaryotic cells. It is composed…

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: Which of these statements is true about multicellular organisms? (a) each section of an organism is…

A: Multicellular organisms have specialized cells to perform different functions.Each cell of…

Q: Name of the group of microorganisms that completely changed the evolution of life on Earth.  - Why…

A: 4 billion years ago, Earth's conditions were drastically different from what they are now. There was…

Q: (a) Name one similarity between algae and plants. (b) Name one difference.

A: Algae and plants are type of organisms present on earth. Depending on the different habitat, each…

Q: In lecture, we discussed the endosymbiont theory that describes the evolutionary origins of…

A: Introduction  The dominant evolutionary explanation for the formation of eukaryotic cells from…

Q: 11) Asexually reproducing organisms pass on hered information as A) sequences of A, T, C, and G B)…

A: Asexual reproduction is a kind of reproduction not involving gametes fusion or a difference in…

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: