Human Biology: Concepts and Current Issues
7th Edition
ISBN: 9780321821652
Author: Michael D. Johnson
Publisher: Benjamin Cummings
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Textbook Question
Chapter 2, Problem 2TY
Which of these molecules would be described as hydrophobic?
a. glucose
b. sodium chloride
c. cholesterol
d. DNA
e. RNA
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What organic compound do brain cells primarily rely on for fuel? a. glucose b. glycogen c. galactose d. glycerol
Chapter 2 Solutions
Human Biology: Concepts and Current Issues
Ch. 2 -
1. Who do you think should be responsible for...Ch. 2 - Prob. 2QCCh. 2 - Describe the electrical charges and relative...Ch. 2 -
2. Explain why two atoms of hydrogen tend to...Ch. 2 -
3. Explain why polar and charged molecules tend...Ch. 2 - How is a covalent bond different from an ionic...Ch. 2 - Compare and contrast potential energy and kinetic...Ch. 2 - Distinguish between saturated and unsaturated...Ch. 2 - Describe the process known as dehydration...Ch. 2 - Explain why proteins come in an almost unlimited...
Ch. 2 -
9. Discuss the importance of enzymes in living...Ch. 2 -
10. Describe the role of ATP in energy transfer...Ch. 2 - If a molecule of starch is repeatedly hydrolyzed,...Ch. 2 - Which of these molecules would be described as...Ch. 2 -
3. _______bonds form between the oxygen and...Ch. 2 - 13C and 14C are ______ of carbon. a. isotopes b....Ch. 2 - Which of the following substances has the lowest...Ch. 2 - When sugar is dissolved in water, sugar is the...Ch. 2 - A monosaccharide is to a polysaccharide as an...Ch. 2 -
8. Which of these bonds is the easiest to...Ch. 2 -
9. The primary structure of a protein is...Ch. 2 -
10. DNA ultimately contains the instructions for...Ch. 2 - If one strand of DNA has the sequence...Ch. 2 - Which of the following is true regarding the...Ch. 2 -
13. Which of the following is true regarding...Ch. 2 - Synthesis of proteins requires the input of...Ch. 2 - Prob. 15TYCh. 2 - Prob. 1AWKCh. 2 - Prob. 2AWKCh. 2 - Many people use cholesterol-lowering drugs to...Ch. 2 - Prob. 4AWKCh. 2 -
5. Coca-Cola is a very acidic drink; its pH is...Ch. 2 - Prob. 6AWK
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- Biological activity of proteins is dependent on which? A. peptide bonds B. thermodynamic properties C. an aqueous environment D. protein conformationarrow_forwardThe main difference between a glycerophospholipid and a sphingophospholipid is which component? A. backbone B. phosphate group C. acyl grouparrow_forwardCholesterol is which type of lipid? a. wax b. saturated fat c. steroid d. phospholipid e. unsaturated fatarrow_forward
- The structure (consisting of a fatty-waxy substance) which separates the intracellular compartment from the extracellular compartment is called the Cell Membrane; what are the fundamental molecules that compose the Cell Membrane? 48. A. Carbohydrates and Proteins B. Carbohydrates and ATP C. Phospholipids and Proteins D. ATP and Phospholipidsarrow_forwardWhen cis peptide bonds are found in proteins, which amino acid is most often flanking that peptide bond? a. Glycine b. Proline c. Alanine d. Cysteinearrow_forwardPhospholipases act on which type of lipid? A. glycolipids B. triacylglycerols C. glycerolophospholipids D. sphingolipidsarrow_forward
- Which of the following polysaccharides is a component of the extracellular matrix and connective tissue? a. glycogen b. hyaluronic acid c. chitin d. cellulosearrow_forwardWhat is the pH value where the protein molecule carries no electrical charge? a. isoelectric b. isopropyl c. isoleucine d. isomersarrow_forwardIn order for proteins to function properly the neccessary amino acids must have a specific what? A. Sequence B. Bond C. Number D. Compoundarrow_forward
- Between which two amino acids do disulfide bonds form? A.Alanine-Glycine B.Serine-Threonine C.Cysteine-cysteine D.Methionine-methioninearrow_forwardAmino acid Tyrosin (Y) is belong to which classification group? A. Polar Hydrophobic B. Nonpolar Hydrophilic C. Acidic D. Polar Hydrophilicarrow_forwardWhich of the following molecules generally possesses a complex shape that allows the molecule to function as tools and machinery that essentially do all the work within a living cell? 20. A. triglycerides B. proteins C. carbohydrate D. A and B are correct.arrow_forward
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