Biology: Life on Earth
10th Edition
ISBN: 9780321729712
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: Benjamin Cummings
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Textbook Question
Chapter 2, Problem 2RQ
Distinguish between atoms and molecules; between elements and compounds; and among protons, neutrons, and electrons. LO1 LO2 LO4
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Collectively, C, H, O, and N comprise approximately what percent of all elements in the body? O about 96% around 16% Ⓒ 100% O approximately 46%
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Chapter 2 Solutions
Biology: Life on Earth
Ch. 2 - Fill-in-the-Blank An atom consists of an atomic...Ch. 2 - Fill-in-the-Blank An atom that has lost or gained...Ch. 2 - Fill-in-the-Blank Atoms of the same element that...Ch. 2 - An atom with an outermost electron shell that is...Ch. 2 - Water is described as _____ because each water...Ch. 2 - Based on Table 2–1 how many neutrons are there in...Ch. 2 - Distinguish between atoms and molecules; between...Ch. 2 - Define isotopes and describe the properties of...Ch. 2 - 3. Compare and contrast covalent bonds and ionic...Ch. 2 - 4. Explain how polar covalent bonds allow hydrogen...
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- Distinguish between an element, an atom, and a molecule.arrow_forwardAtoms that vary in the number of neutrons found in their nuclei are called _____________. ions neutrons neutral atoms isotopesarrow_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_forward
- Which of the following happens in all chemical reactions (involving molecules) in all living organisms? O C) Chemical energy changes form to thermal energy O A and B O A, B, and C O A) Matter changes form from one combination of atoms to a different combination of atoms O D) Electromagnetic (light) energy changes form to chemical energy O B) Chemical energy in one molecule changes form to chemical energy in another molecule O A, B, C, and Darrow_forwardDefine macromoleculesarrow_forwardOrganic molecules contain both carbon and hydrogen atoms (and may have a few other elements as well). There are millions of kinds of organic molecules. They include molecules like: What is the smallest organic molecule?arrow_forward
- Answer this following question in your own words: question 1: Identify the four most abundant elements in the body. question 2: Explain the relationship between an atom’s number of electrons and its relative stability. Question 3: Briefly identify a few characteristic points about the following bonds: Ionic bonds, Covalent bonds, and Hydrogen bonds. Question 4: Explain how energy is invested, stored, and released via chemical reactions? Question 5: Compare and contrast the difference between Proteins, Carbohydrates, Lipids and Nucleic acids?arrow_forwardWhich of the following is not a fundamental subatomic particle that forms elements? Which of the following is not a fundamental subatomic particle that forms elements? electrons protons nucleus neutronsarrow_forwardWhich type of biological molecule (carbohydrate, lipid or protein) is described by the formula C5H10O5? Question options: a) carbohydrate b) lipid c) proteinarrow_forward
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