BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Textbook Question
Chapter 2, Problem 9SA
A(n) _________ substance repels water.
a. acidic | c. hydrophobic |
b. basic | d. polar |
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A cation has a(n) ________ charge.a. neutralb. positivec. alternatingd. negative
Substances those are partially dissolved in
water are commonly known as
اخترأحد الخيارات
a. hydrophilic / hydrophobic
b. false statement
c. hydrophilic
d. hydrophobic
e. all given choices are incorrect
One of the most important properties of water is that it can form a _______ with other water molecules. This means that water molecules are able to “stick together” to a certain extent. The term for this property is cohesion.
A. Ionic bond
B. Covalent Bond
C. Hydrogen Bond
Chapter 2 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 2 - What atom has only one proton? a. hydrogen c. a...Ch. 2 - A molecule into which a radioisotope has been...Ch. 2 - Prob. 3SACh. 2 - Prob. 4SACh. 2 - All ions have at least one ________ select all...Ch. 2 - Rank the following chemical bonds in order of...Ch. 2 - The mutual attraction of opposite charges holds...Ch. 2 - Atoms share electrons unequally in an _______...Ch. 2 - An _________ substance repels water. a. acidic c....Ch. 2 - A salt does not release ______ in water. a. ions...
Ch. 2 - Hydrogen ions H+ are _____. a. in blood c....Ch. 2 - When dissolved in water, an _________ donates H+;...Ch. 2 - An ________ can help keep the pH of a solution...Ch. 2 - Prob. 14SACh. 2 - Prob. 15SACh. 2 - Alchemists were the forerunners of modern-day...Ch. 2 - Draw a shell model of a lithium atom Li, which has...Ch. 2 - Polonium is a rare element with 33 radioisotopes....Ch. 2 - Some undiluted acids are not as corrosive as when...
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- Hydrogen bonds are a type of _____________ bond or interaction. a. ionic b. dipole–dipole c. dipole-induced dipole d. London dispersionarrow_forward_____________contribute hydrogen ions (H+) to a solution.a. Basesb. Isotopesc. Acidsd. Compoundsarrow_forwardThe smallest unit of any substance is the . a. atom b. molecule c. cellarrow_forward
- If the addition of an acid or a base to a solution does not change its pH (or changed minimally), then that solution is referred to as a a. acid b. base c. buffer d. neutral solutionarrow_forwardA solution that conducts electricity must contain Select one: a. Hydrophobic molecules b. Polar molecules c. Ionsarrow_forwardWhich of the following substances will dissolve in water A.nonpolar B.polar C.hydrophobic D.hydrophilic E.ionicarrow_forward
- Which of the following alters proteins and membranes? a. Alcohols b. Iodine c. All other choices d. Phenolic compoundsarrow_forwardAcid hydrolysis of soap yields _________ a. fatty acids b. glycerol c. salts of fatty acids d. triacylglycerolarrow_forwardThe tertiary structure of many proteins reveals that nonpolar portions are primarily on the ________ of the molecule a. interior b. exteriorarrow_forward
- α-linolenic acid has a lower melting point than ___________ because, although they have the same number of carbons, the former is an unsaturated fatty acid whereas the the latter is a saturated fatty acid. A. palmitic acid B. stearic acid C. oleic acid D. linoleic acid E. arachidonic acidarrow_forwardRelative tonicity compares the _____________ of two environments. A. Solute concentration B. Solvent concentration C. Difference in types of solutes D. Difference in types of solventsarrow_forwardA substance formed of crystals of equal numbers of cations and anions held together by ionic bonds is called a(n) ________. a. noble gas b. salt c. electrolyte d. dipolearrow_forward
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