Campbell Essential Biology with Physiology (6th Edition)
6th Edition
ISBN: 9780134711751
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 10SQ
Explain why it is unlikely that life could exist on a planet where the main liquid is methane, a nonpolar molecule that does not form hydrogen bonds.
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Chapter 2 Solutions
Campbell Essential Biology with Physiology (6th Edition)
Ch. 2 - An atom can be changed into an ion by adding or...Ch. 2 - If you change the number of _________, the atom...Ch. 2 - A nitrogen atom has 7 protons; and the most common...Ch. 2 - Why are radioactive isotopes useful as tracers in...Ch. 2 - What is chemically nonsensical about this...Ch. 2 - Why is it unlikely that two neighboring water...Ch. 2 - Which of the following is not a chemical reaction?...Ch. 2 - Some people in your study group say they dont...Ch. 2 - Explain how the unique properties of water result...Ch. 2 - Explain why it is unlikely that life could exist...
Ch. 2 - A can of cola consists mostly of sugar dissolved...Ch. 2 - Prob. 12IMTCh. 2 - Prob. 13IMTCh. 2 - Prob. 14IMTCh. 2 - Animals obtain energy through a series of chemical...Ch. 2 - Interpreting Data As discussed in the text and...Ch. 2 - Critically evaluate this statement: Its paranoid...Ch. 2 - A major source of the CO2 that causes ocean...
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- A. The first shell corresponds to the first energy level, and it can hold up to 2 electrons. Hydrogen has one proton, so it has 1 electron and one vacancy. A helium atom has 2 protons, 2 electrons, and no vacancies. B. The second shell corresponds to the second energy level, and it can hold up to 8 electrons. Carbon has 6 electrons, so its first shell is full. Its second shell has 4 electrons and four vacancies. Oxygen has 8 electrons and two vacancies. Neon has 10 electrons and no vacancies. C. The third shell corresponds to the third energy level, and it can hold up to 8 electrons. A sodium atom has 11 electrons, so its first two shells are full; the third shell has one electron. Thus, sodium has seven vacancies. Chlorine has 17 electrons and one vacancy. Argon has 18 electrons and no vacancies. Figure It Out: Which of these models have unpaired electrons in their outer shell?arrow_forwardDraw a shell model of an uncharged nitrogen atom. Hint: Nitrogen has seven protons.arrow_forwardjustify the dependence of life on the sun and the interdependence of living things and their chemistry. People who do not understand the relationships between biological processes on the planet may roll their eyes at the statement, "Life on this planet is a delicate balance." What evidence have you found in this course so far to support this statement? Consider: The relationship between the sun, autotrophs, and heterotrophs. Give examples of how the relationship between each group. The relationship between photosynthesis and cellular respiration. Explain the chemical reactants and products of one to the other. The relationship between oxidation and reduction reactions. Define and provide an example of each. The production and consumption of ATP during photosynthesis and cellular respiration. Be detailed in where ATP is made, and where it may be used both in photosynthesis and cellular respiration.arrow_forward
- Why is inclusion of methane in the gas flasks an essential part of the hypothesis that complex organic molecules were formed in the early atmosphere of Earth? (Hint: What makes a molecule organic?)arrow_forwardSome prokaryotic and all eukaryotic cells use oxygen to harvest energy from food molecules. In what form is that energy available to power cell work? a) b) c) glucose molecules d) fat molecules ATP molecules heat and light P Sunlight energy ECOSYSTEM Photosynthesis in chloroplasts Cellular respiration in mitochondria ATP (for cellular work) ww www Heat energyarrow_forwardDescribe the levels of organization of matter in the universe with at least 2 specific examples for each level.arrow_forward
- Like oxygen, sulfur forms two covalent bonds. However, sulfur is far less electronegative. In fact, it is approximately as electronegative as carbon. How would the properties of the various classes of biological molecules be altered if you were to replace all the oxygen atoms with sulfur atoms?arrow_forwardAs scientists continue exploring other planets and our solar system, they seek evidence to prove that life has existed. Which molecules should scientists look for?arrow_forwardDraw a shell model of a lithium atom (Li), which has three protons, then predict whether the majority of lithium atoms on Earth are uncharged, positively charged, or negatively chargedarrow_forward
- Consider the following statement. “To produceone molecule of each possible kind of polypeptide chain,300 amino acids in length, would require more atoms thanexist in the universe.” Given the size of the universe, do yousuppose this statement could possibly be correct? Sincecounting atoms is a tricky business, consider the problemfrom the standpoint of mass. The mass of the observableuniverse is estimated to be about 1080 grams, give or takean order of magnitude or so. Assuming that the averagemass of an amino acid is 110 daltons, what would be themass of one molecule of each possible kind of polypeptidechain 300 amino acids in length? Is this greater than themass of the universe?arrow_forwardDescribe in one page why hydrogen, carbon, nitrogen, and oxygen can be considered the most important building blocks for living organisms.arrow_forwardAnother fossil-fuel gas used in cooking appliances is "propane", used commonly in backyard grills and RV/camping stoves. Propane is a bigger hydrocarbon: 3 carbons single-bonded in a chain, and the remaining bonds are taken by hydrogen. Its formula is C3H8 and its structure is shown below. KEY POINT: the products are the same as the combustion of methane, but more is produced. The graphic below shows that one propane molecule reacts with 5 oxygen molecules to form molecules of carbon dioxide. C3Hg + 502 → 3CO,+ 4H,0 00O 000 SUOLDICIATEFIEETILNED I RLIANMr CASIRICTIOonL Harrow_forward
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