do all living organisms have DNA. Explain in two sentences
Homework Answers
Bacteria, archea., eukaryotes are 3 domains of life and all these organisms use DNA as genetic material bacteria and archaea have circular chromosomes whereas eukaryotes have linear chromosomes. Viruses use RNA as genetic material but are not considered living, because it shows the properties of living only when it infects a host.
1- in 3 sentences, define what an antioxidant is and its usefulness in living organisms, and...
1- in 3 sentences, define what an antioxidant is and its usefulness in living organisms, and give the name of at least one antioxidant.
There are two types of nucleic acids, DNA and RNA. Nearly all organisms use DNA, not...
There are two types of nucleic acids, DNA and RNA. Nearly all organisms use DNA, not RNA, as the central repository for genetic information. Choose the statements that explain this phenomenon. DNA contains adenine as one of its nitrogenous bases. DNA has a double‑stranded structure that ensures an accurate mechanism of duplication. DNA contains an −OH−OH group at the 2′2′ carbon. DNA is flexible and forms complex catalytic structures. DNA is more resistant against enzymes that break down nucleic acids.
A) Explain how geography, mass extinctions and adaptive radiation help explain the diversity of living organisms....
A) Explain how geography, mass extinctions and adaptive radiation help explain the diversity of living organisms. B) Explain how changes in development can explain the evolution of new live forms. .Using the information you presented about geography, mass extinction, adaptive radiation and embryonic development, from the previous two questions, explain how living organisms evolve.
How does DNA account for both the common features and diversity observed in living organisms and...
How does DNA account for both the common features and diversity observed in living organisms and how can it help us understand the evolutionary relationships between them?
According to the endosymbiotic theory 24 Multiple Choice all living organisms are composed of cells and...
According to the endosymbiotic theory 24 Multiple Choice all living organisms are composed of cells and that a cell is the smallest unit considered to be living living organisms can arise from non-living matter and that the type of organism formed depends on the type of non-living matter chloroplasts and mitochondria evolved from small prokaryotes that were consumed by a larger eukaryotic cell new species arise when a portion of the population becomes isolated from the remainder of the population...
1. Why is taxonomy (the scheme of naming living organisms) so important in Biology? 2. How...
1. Why is taxonomy (the scheme of naming living organisms) so important in Biology? 2. How does a virus differ from all living organisms? 3. How does a virus affect a living organism? Give at least one specific example. 4. How has the excessive use of antibiotics resulted in a major global problem? 5. How are plants and animals dependent on each other? Give some specific examples. 6. What do the fungi and animals have in common? 7. Which types...
DNA is the molecule used to store the genetic code of most living organisms on earth....
DNA is the molecule used to store the genetic code of most living organisms on earth. Its structure was famously proposed by Watson and Crick who proposed double helix structure published in the journal Nature, April 25, 1953. For this the Nobel Prize was awarded to Watson, Crick & Wilkins in 1962. (a) (i) (ii) Show the chemical structure of the DNA backbone. What is a 1. the backbone, 2. a nucleoside, 3. a nucleotide 4. a nucleic acid? (b)...
1. What are the different sources of energy available to living organisms? 2. How do the...
1. What are the different sources of energy available to living organisms? 2. How do the acquisition and the use of energy by living organisms work according to the laws of thermodynamics? 3. Explain the energy use in the following reactions: endergonic/exergonic. 4. What is metabolism? How are chemical reactions related to metabolism? Why is energy needed to run a metabolism? What are coupled reactions? 5. Draw a picture of ATP. Why is this molecule so important for cells? How...
The group of organisms humans belong to is relatively small. All living organisms share a common...
The group of organisms humans belong to is relatively small. All living organisms share a common ancestor, as evidenced by the commonality of DNA and ribosomes. Humans are not a unique form of life. Our ability to learn about the natural world does provide us an advantage over many species, especially if we use this advantage wisely. Antibiotics are prevalent in bacteria and fungi, whereas other drugs are derived from plants. Humans are not the most common species on Earth....
Question 9 1 pts Why does cellular aging (or senescence) occur in eukaryotic organisms? O DNA...
Question 9 1 pts Why does cellular aging (or senescence) occur in eukaryotic organisms? O DNA in eukaryotes is linear, and the ends of the DNA shorten each time replication occurs Telomeres extend the length of the DNA until it becomes too unwieldy to replicate well Extracellular signals tell the cells to stop dividing The nucleotides in the DNA eventually degrade and don't adhere well to each other anymore Question 10 1 pts What evidence do we have against the...
A) Explain how geography, mass extinctions and adaptive radiation help explain the diversity of living organisms. B) Explain how changes in development can explain the evolution of new live forms. .Using the information you presented about geography, mass extinction, adaptive radiation and embryonic development, from the previous two questions, explain how living organisms evolve.
According to the endosymbiotic theory 24 Multiple Choice all living organisms are composed of cells and that a cell is the smallest unit considered to be living living organisms can arise from non-living matter and that the type of organism formed depends on the type of non-living matter chloroplasts and mitochondria evolved from small prokaryotes that were consumed by a larger eukaryotic cell new species arise when a portion of the population becomes isolated from the remainder of the population...
DNA is the molecule used to store the genetic code of most living organisms on earth. Its structure was famously proposed by Watson and Crick who proposed double helix structure published in the journal Nature, April 25, 1953. For this the Nobel Prize was awarded to Watson, Crick & Wilkins in 1962. (a) (i) (ii) Show the chemical structure of the DNA backbone. What is a 1. the backbone, 2. a nucleoside, 3. a nucleotide 4. a nucleic acid? (b)...
1. What are the different sources of energy available to living organisms? 2. How do the acquisition and the use of energy by living organisms work according to the laws of thermodynamics? 3. Explain the energy use in the following reactions: endergonic/exergonic. 4. What is metabolism? How are chemical reactions related to metabolism? Why is energy needed to run a metabolism? What are coupled reactions? 5. Draw a picture of ATP. Why is this molecule so important for cells? How...
The group of organisms humans belong to is relatively small. All living organisms share a common ancestor, as evidenced by the commonality of DNA and ribosomes. Humans are not a unique form of life. Our ability to learn about the natural world does provide us an advantage over many species, especially if we use this advantage wisely. Antibiotics are prevalent in bacteria and fungi, whereas other drugs are derived from plants. Humans are not the most common species on Earth....
Question 9 1 pts Why does cellular aging (or senescence) occur in eukaryotic organisms? O DNA in eukaryotes is linear, and the ends of the DNA shorten each time replication occurs Telomeres extend the length of the DNA until it becomes too unwieldy to replicate well Extracellular signals tell the cells to stop dividing The nucleotides in the DNA eventually degrade and don't adhere well to each other anymore Question 10 1 pts What evidence do we have against the...
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