Biology: Life on Earth (11th Edition)
11th Edition
ISBN: 9780134168296
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 4MC
Molecules
a. always consist of different elements bonded together.
b. may be polar or nonpolar.
c. may be held together entirely by hydrogen bonds.
d. cannot be held together by ionic bonds.
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One of the results of a fat being saturated is that the molecules interact stronger. This means that saturated fats are usually solid at room temperature while unsaturated fats are typically liquids. The interactions between triglycerides falls under which of the following types.
Select one:
a. Covalent Bonds
b. van der Walls bonds
c. Hydrogen Bonds
d. Ionic Bonds
Hydrogen bonds are formed as a result of which of the following?a. ionic bondsb. nonpolar covalent bondsc. polar covalent bondsd. None of these are correct.
. A cation is a(n)a. uncharged atom.b. positively charged atom.c. negatively charged atom.d. atom that has gained an electron
Chapter 2 Solutions
Biology: Life on Earth (11th Edition)
Ch. 2 - 1. Which of the following is false?
a. An element...Ch. 2 - Prob. 2MCCh. 2 - Isotopes are defined as a. atoms of the same...Ch. 2 - Molecules a. always consist of different elements...Ch. 2 - 5. Covalent bonds
a. link water molecules in...Ch. 2 - 1. An atom consists of an atomic nucleus composed...Ch. 2 - Prob. 2FTBCh. 2 - Prob. 3FTBCh. 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 - 2. Distinguish between atoms and molecules and...Ch. 2 - 3. Compare and contrast covalent bonds and ionic...Ch. 2 - 4. Explain how polar covalent bonds allow hydrogen...Ch. 2 - Why can water absorb a great amount of heat with...Ch. 2 - 6. Describe how water dissolves a salt.
Ch. 2 - Define pH scale, acid, base, and buffer. How do...Ch. 2 - Prob. 1ACCh. 2 - Prob. 2ACCh. 2 - You can now buy “whiskey stones” made of granite,...
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- The weak attractive force between two water molecules forms a(n)a. covalent bond. c. ionic bond. e. isotope.b. hydrogen bond. d. compound.arrow_forwardNoncovalent bonds include all of the following except: a. van der Waals interaction b. ionic bonds c. carbon–oxygen double bond d. hydrogen bondarrow_forwardThis type of noncovalent bond is responsible for clustering fatty acid tails of phospholipids in a micelle. a. Disulfide bonds b. Hydrogen bonds c. Hydrophobic interactions d. Ionic interactions e. van der Waals interactionsarrow_forward
- A 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_forwardSaturated fats: A. contain many double bonds B. exist as solids at room temperature C. have two fatty acid chains D. exist as liquids and are derived from plants E. are formed from 4 interlocking carbon ringsarrow_forwardWater has some very unusual properties. These properties occur because of thea. hydrogen bonds between the individual water molecules.b. covalent bonds between the individual water molecules.c. hydrogen bonds within each individual water molecule.d. ionic bonds between the individual water molecules.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_forwardClassify each of the following bonds as nonpolar covalent, polar covalent, or ionic on the basis of electronegativity differences.a. C—Ob. Na—Clc. C—Id. Ca—Sarrow_forwardWhich of the following is incorrect about lipids? a. Some contain polar groups referred to as "polar head" Ob. The bulk of their structure is hydrocarbon-like c. They are water-soluble bio-compounds d. They lack a common functional grouparrow_forward
- 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 moleculesarrow_forwardWhich of the following bonding types is the most important in the nonaqueous interfaces between protein subunits? a. van der Waals interactions b. the hydrophobic effect c. ionic bonds d. disulfide bridgesarrow_forwardThis occurs when the cations and anions are attracted to the positive and negative ends of water molecules: A. ionic bonding B. dissociation C. covalent bonding D. hydrogen bondingarrow_forward
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