Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 12TYU
FOCUS ON EVOLUTION
The percentage of naturally occurring elements making up the human body are similar to the percentages of these elements found in other organisms. How could you account for this similarity among organisms? Explain your thinking.
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Students have asked these similar questions
Life, at least in the form found on Earth, is based around one element om particular: Carbon. Pretty much all biomolecules that keep us alive are based on carbon. Why is carbon so important in living systems? Be as specific as you can!
The percentages of naturally occurring elements making up the human body (see Table 2.1) are similar to the percentages of these elements found in other organisms. How could you account for this similarity among organisms?
Why is carbon such an important molecule for life?
It is part of the water molecule
It readily forms ionic bonds
It can form chemical bonds with as many as four other atoms
It can form hydrogen bonds with many other molecules
Chapter 2 Solutions
Campbell Biology in Focus
Ch. 2.1 - Is a trace element an essenteal element? Explain.Ch. 2.1 - Prob. 2CCCh. 2.2 - A nitrogen atom has 7 protons and the most common...Ch. 2.2 - Prob. 2CCCh. 2.2 - Prob. 3CCCh. 2.3 - Why does the structure HCCH fail to make sense...Ch. 2.3 - What holds the atoms together in a crystal of...Ch. 2.3 - If you were a phamaceutical researcher, why would...Ch. 2.4 - Which type of chemical reaction occurs faster at...Ch. 2.4 - Write an equation that uses the products of...
Ch. 2.5 - Prob. 1CCCh. 2.5 - How can the freezing of water crack boulders?Ch. 2.5 - Compared with a basic solution at pH 9, the same...Ch. 2.5 - What would be the effect on the properties of the...Ch. 2.5 - Prob. 5CCCh. 2 - The reactivity of an atom arises from A. the...Ch. 2 - Which of the following statements correctly...Ch. 2 - Many mammals control their body temperature by...Ch. 2 - We can be sure that a mole of table sugar and a...Ch. 2 - Measurements show that the pH of a particular lake...Ch. 2 - Prob. 6TYUCh. 2 - What coefficients must be placed in the following...Ch. 2 - A Slice of pizza has 500 kcal. If we could burn...Ch. 2 - Draw the hydration shells that from around a...Ch. 2 - What do climate change (see Concept 1.1) and ocean...Ch. 2 - SCIENTIFIC INQUIRY Female luna moths (Actias luna)...Ch. 2 - FOCUS ON EVOLUTION The percentage of naturally...Ch. 2 - FOCUS ON ORGANIZATION Several emergent properties...Ch. 2 - SYNTHESIZE YOUR KNOWLEDGE How do cats drink?...
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- Some scientists propose that Silicon might be a suitable alternative to Carbon as the basicatom that forms the “backbone of life”. Why is this?arrow_forwardCan you please solve what is in the picture and write a big paragraph explaining. Thank you!arrow_forwardThree different molecules are shown below. The electronegativity of sulfur (S) is similar to the electronegativity of carbon (C). The electronegativity of nitrogen (N) is similar to the electronegativity of oxygen (O). T/F: Molecule 1 only contains nonpolar covalent bonds. T/F: Molecule 1 only contains nonpolar covalent bonds. True False Question at position 3 3 1 point Question at position 3 T/F: Molecule 1 could form a hydrogen bond with another Molecule 1. T/F: Molecule 1 could form a hydrogen bond with another Molecule 1. True False Question at position 4 4 1 point Question at position 4 T/F: Molecule 3 is hydrophilic. T/F: Molecule 3 is hydrophilic. True False Question at position 5 5 1 point Question at position 5 T/F: Molecule 1 is unable to form a hydrogen bond with water. T/F: Molecule 1 is unable to form a…arrow_forward
- Discuss the concept that life has a chemical basisarrow_forwardShould seeds,viruses and frozen embryos be considered alive? Justify your opinion Keep in mind that all living organisms on this planet are characterized by the following 8 characteristics. They require liquid water, are made of common based molecules, cycle energy, respond to stimuli, evolve, maintain homeostasis reproduce and contain genetic materialarrow_forwardSome scientists have speculated that life forms elsewhere in the universe could be based on silicon, rather than carbon. What properties does silicon share with carbon that makes this more likely than say aluminum-based life or neon-based life?arrow_forward
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