BIOLOGY W/CONNECT >IP<
11th Edition
ISBN: 9781259910487
Author: Raven
Publisher: MCG CUSTOM
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Chapter 28, Problem 1S
If a new form of carbon fixation was discovered that was not biased toward carbon-12, would this affect our analysis of the earliest evidence for life?
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Chapter 28 Solutions
BIOLOGY W/CONNECT >IP<
Ch. 28 - Prob. 1UCh. 28 - A cell that can use energy from the sun, and CO2...Ch. 28 - Gram-positive (+) and gram-negative () bacteria...Ch. 28 - Which of the following characteristics is unique...Ch. 28 - The horizontal transfer of DNA using a plasmid is...Ch. 28 - The disease tuberculosis is a. caused by a...Ch. 28 - Prokaryotes participate in the global cycling of...Ch. 28 - Which of the following is typically NOT associated...Ch. 28 - The mechanisms of DNA exchange in prokaryotes...Ch. 28 - The cell wall in both gram-positive and...
Ch. 28 - The three domains of life a. represent variations...Ch. 28 - Ulcers and tooth decay do not appear related, but...Ch. 28 - Bacteria lack independent internal membrane...Ch. 28 - Plants cannot fix nitrogen, yet some plants do NOT...Ch. 28 - If a new form of carbon fixation was discovered...Ch. 28 - Prob. 2SCh. 28 - Use of multiple antibiotics is not a bad idea if...Ch. 28 - Soil-based nitrogen-fixing bacteria appear to be...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- An abundance of___________ in Earths early atmosphere would have prevented the spontaneous assembly of organic compounds on early Earth. a. hydrogen b. methane c. oxygen d. nitrogenarrow_forwardWhat is the name of the evolution where carbon, oxygen, nitrogen were formed?arrow_forwardWhy was the evolution of photosynthesizing bacteria important for the evolution of large, oxygen-consuming organisms like ourselves?arrow_forward
- Was there molecular oxygen in the earth's primitive atmosphere? How has that molecule become abundant?arrow_forwardAre the three methods/hypotheses of producing the building blocks of life on earth mutually exclusive? Why or why not? Is there evidence that supports all three proposed mechanismsarrow_forwardIn their laboratory experiments of simulations of early Earth, Miller and Urey observed the abiotic synthesis of abundant amounts of DNA amino acids liposomes genetic systems Which of the following was probably NOT present in the primitive Earth s atmosphere (when life first appeared)? O2 NH3 H2O CH4 CO2arrow_forward
- Why did the evolution of multicellular organisms such as plants and animals have to be preceded by the evolution of oxygen-producing photosynthesis?arrow_forwardWhy do we say that life is based on carbonarrow_forwardWith regard to the origin of life, why are biologistsinterested in the prebiotic synthesis of organic molecules?arrow_forward
- How is origin of life attributed to LIGHT and WATER? Give a detailed explanation.arrow_forwardHere is the question: What was the likely source of the raw material incorporated into the first life forms? I believe it is carbon, but I don't know why it is carbon. What I mean is, why is carbon considered the thing that makes something alive? Why are eukaryotes and prokaryotes simply considered alive just because they have carbon. Would that mean that carbon is alive because carbon has carbon? I would appreciate an anwser because I'm really trying to understand everything I run across. I love educating myself and I'm on a quest for knowledge. Thanks guys!arrow_forwardWhich of the following questions about the origin of life on Earth is most scientifically testable? * Why were the earliest life-forms created using only twenty amino acids? Did life originate to make the universe a better place? Was catalytic RNA used by ancient organisms as a stepping stone to acquire protein enzymes? Can simple organic molecules form spontaneously in an oxygen-free atmosphere?arrow_forward
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