BIOLOGY:CONCEPTS+INV>CUSTOM<
18th Edition
ISBN: 9781307311655
Author: Hoefnagels
Publisher: MCG/CREATE
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Chapter 2, Problem 5MCQ
Summary Introduction
Introduction:
A hydrogen bond is an interaction between a hydrogen atom attached to an electronegative atom, and an electronegative atom that possesses a lone pair of electron.
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A hydrogen bond is distinct from ionic and covalent bonds in that ita. is a weak attraction between two molecules.b. forms only between two hydrogen atoms.c. is considerably stronger than the other two types of bonds.d. occurs more commonly in lipids than in other types of molecules
Fats do not dissolve in water because
Select one:
a. There are no C-H bonds to form hydrogen bonds with water
b. There are no O-H bonds form hydrogen bonds with water
c. There are no C-C bonds to form hydrogen bonds with water
d. There are no C-H bonds for covalent bonds with water
e. There are no C-C bonds to form covalent bonds with water
Polyunsaturated fatty acids
a). are solid at room temperature
b). have carbon-carbon double bonds
c). are polar
d). have high melting points
Chapter 2 Solutions
BIOLOGY:CONCEPTS+INV>CUSTOM<
Ch. 2.1 - Which four elements do organisms require in the...Ch. 2.1 - Where in an atom are protons, neutrons, and...Ch. 2.1 - What does an elements atomic number indicate?Ch. 2.1 - What is the relationship between the mass of 12C...Ch. 2.1 - Prob. 5MCCh. 2.2 - How are atoms, molecules, and compounds related?Ch. 2.2 - Prob. 2MCCh. 2.2 - Explain how electronegativity differences between...Ch. 2.3 - Prob. 1MCCh. 2.3 - Distinguish between a solute and a solvent and...
Ch. 2.3 - Prob. 3MCCh. 2.3 - Prob. 4MCCh. 2.3 - Prob. 5MCCh. 2.3 - Prob. 6MCCh. 2.4 - How do acids and bases affect a solution's H'...Ch. 2.4 - Prob. 2MCCh. 2.4 - How do buffers regulate the pH of a fluid?Ch. 2.5 - Prob. 1MCCh. 2.5 - Prob. 2MCCh. 2.5 - List examples of carbohydrates, proteins, nucleic...Ch. 2.5 - What is the significance of a protein's shape, and...Ch. 2.5 - What are some differences between RNA and DNA?Ch. 2.5 - Prob. 6MCCh. 2.6 - Prob. 1MCCh. 2.6 - Prob. 2MCCh. 2 - A hydrogen ion (H+) has...Ch. 2 - Prob. 2MCQCh. 2 - Prob. 3MCQCh. 2 - Prob. 4MCQCh. 2 - Prob. 5MCQCh. 2 - Prob. 6MCQCh. 2 - The vitamin biotin contains 10 atoms of carbon, 16...Ch. 2 - Distinguish between nonpolar covalent bonds, polar...Ch. 2 - Prob. 3WIOCh. 2 - Prob. 4WIOCh. 2 - Define solute, solvent, and solution.Ch. 2 - Give an example from everyday life of each of the...Ch. 2 - Prob. 7WIOCh. 2 - How do hydrogen ions relate to the pH scale?Ch. 2 - Sketch a monosaccharide, an amino acid, a...Ch. 2 - Prob. 10WIOCh. 2 - You eat a sandwich made of starchy bread, ham, and...Ch. 2 - Prob. 1PITCh. 2 - Prob. 2PITCh. 2 - Besides water, what other molecules are essential...Ch. 2 - 4. Add monomers, polymers, dehydration synthesis,...
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- Fatty acids that have ______ are more likely to be liquid at room temperature. A. more double bonds B. fewer double bonds C. a longer carbon chain D. a shorter carbon chainarrow_forwardWhich of the following statements about chemicalbonds is true?a. Covalent bonds are stronger than ionic bonds.b. Hydrogen bonds occur between two atoms ofhydrogen.c. Bonding readily occurs between nonpolar andpolar molecules.d. A molecule of water is unlikely to bond with anion.arrow_forwardThe carbon-to-nitrogen bond that joins amino acids together is called a.a glycosidic bond. b.a peptide bond. c.a hydrogen bond. d.a double bond.arrow_forward
- Which of the following statements is incorrect about disulfide bonds? a. They form between two cysteine amino acids.b. They are noncovalent.c. They contribute to the tertiary structure of some proteins.d. They contribute to the quaternary structure of some proteins.e. They involve the loss of two hydrogen atoms.arrow_forwardWater molecules have one oxygen atom that is more electronegative than the two hydrogen atoms bound to it. As a result, which type of bonding hold water molecules together a. non-popular covalent bonding b. polar covalent bonding c.ionic bonding d.hydriohocicarrow_forwardFatty acids in phospholipids and triacylglycerols interact with one another by (a) disulfide bridges (b) van der Waals interactions (c) covalent bonds (d) hydrogen bonds (e) fatty acids do not interact with one anotherarrow_forward
- The monomers that make up proteins are called_____. a. nucleotides b. disaccharides c. amino acids d. chaperonesarrow_forwardWhich of the following describes a lipid? A. An organic molecule that consists of one or more chains of amino acids folded up in a specific shape B. A fatty, oily, or waxy organic compound often composed of fatty acids C. A molecule that consists primarily of carbon, hydrogen, and oxygen atoms in a ratio of 1:2:1 D. A molecule that consists of one or more strands of nucleotidesarrow_forwardA covalent bond forms whena. electrons are present in a valence shell.b. a valence electron is removed from one atom and added to another.c. a pair of valence electrons is shared between two atoms.d. the electronegativity of one atom is much greater than that ofanother atom.arrow_forward
- Biological activity of proteins is dependent on which? A. peptide bonds B. thermodynamic properties C. an aqueous environment D. protein conformationarrow_forwardWhich of the following is not associated with proteins? a.) amino acids b.) hydrogenation c.) peptide bonds d) bending and foldingarrow_forwardWhich of the following is used to define lipids?A) The presence of a specific functional group.B) Their chemical structure.C) Their insolubility in water.D) None of these.arrow_forward
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