Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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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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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?
The percentage of naturally occurring elements making up the human body (Carbon, hydrogen, oxygen, and nitrogen make up 96% of living matter. Most of the remaining 4% consists of calcium, phosphorus, potassium, and sulfurntages of these elements found in other organisms) are similar to the percentages of these elements found in other organisms. How could you account for this similarity among organisms?
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?
Chapter 2 Solutions
Campbell Biology in Focus (2nd Edition)
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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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
- Oxygen (O) is a(n) _______; the oxygen we breathe (O2) is a(n) _______; and the carbon dioxide we exhale is a(n) _______. a. compound; molecule; element b. atom; compound; element c. element; atom; molecule d. atom; element; molecule e. element; molecule; compoundarrow_forwardEVOLUTION CONNECTION The percentages of naturallyoccurring elements making up the human body (see Table 2.1)are similar to the percentages of these elements found in otherorganisms. How could you account for this similarity amongorganisms?arrow_forwardAlchemists were medieval scholars and philosophers who were the forerunners of modern-day chemists. Many spent their lives trying to transform lead (atomic number 82) into gold (atomic number 79). Explain why they never succeeded.arrow_forward
- A popular theme in science fiction literature has been the idea of silicon-based life-forms in contrast to our carbon-based life. Evaluate the possibility of silicon-based life based on the chemical structure and potential for chemical bonding of a silicon atom.arrow_forwardWhich statement is false? A. Elements are found in compounds and molecules B. compounds are made of elements C. a molecule must be made of at least two atoms D. chemical bonds form between molecules of solute and solvent E. two atoms of oxygen make a molecule of oxygenarrow_forwardAccording to the big bang theory, _______. a. the universe expanded out from a single point b. Earth and our sun formed simultaneously c. carbon and oxygen were the first elements to form d. all of the abovearrow_forward
- Together, just four elements make up more than 95 percent of the body’s mass. These include ________. calcium, magnesium, iron, and carbon oxygen, calcium, iron, and nitrogen sodium, chlorine, carbon, and hydrogen oxygen, carbon, hydrogen, and nitrogenarrow_forwardThe smallest unit of an element that still retains the distinctive behavior of that element is an ________. electron atom elemental particle isotopearrow_forwardWhich is true for DNA, RNA and Polypeptides? a) Only some have side chains (N groups or R groups extending from the backbone or central chain, b) They are formed from ribose by dehydration synthesis. c) They all have subunits that include nitrogenous bases. d) They were formed spontaneously (first appear) during Chemical Evolution before life. e) All are truearrow_forward
- As scientists why does phosphorus compound is important?arrow_forwardOne of the authors of your text once overheard the following: “It’s paranoid and ignorant to worry about industry or agriculture contaminating the environment with their chemical wastes. After all, this stuff is just made of the same atoms that were already present in our environment anyway.”What do you think of this statement?arrow_forwardBiological molecules are necessary for every living thing (every organism) to survive. They help organisms because they provide:arrow_forward
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