
BIOL 221 L2
Authored by Riya Verma
Science
University
NGSS covered
Used 25+ times

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34 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What advantage is it for biological systems to use hundreds of weak bonds rather than one strong bond to hold two molecules together?
Weak bonds are better suited to enzyme-catalyzed reactions than strong bonds are
It takes less energy to make hundreds of weak bonds than to make one strong bond
Tetrahedral carbon atoms form weak bonds more readily than strong bonds.
Weak bonds can be broken with less energy input than strong bonds.
It isn't. Biological molecules are joined more b\ strong bonds than b\ weak bonds.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT caused by hydrogen bonding?
A. protein alpha helices
B. ice floats in water
C. DNA double helix
D. NaCl dissolves in water
E. Hydronium ions form in water
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Weak bonds are caused by
Isotopes with lighter nuclei than normal
Electron sharing
Partial electron sharing
Charge interactions
Adding heat to strong bonds
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Van der Waals (hydrophobic) interactions occur when . . .
a polar molecule interacts with an ion
two molecules get closer together than the\ would in a covalent bond
a random charge fluctuation sets up a transient dipole in a non
a polar molecule with a dipole interacts with another polar molecule
one ion interacts with an ion of opposite charge
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Weak bonds are caused by
Charge interactions
Partial electron sharing
Atoms with lighter nuclei than normal
Electron sharing
Adding heat to strong bonds
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Two molecules with polar covalent bonds are attracted to each other. The resulting bond could be a
Polar covalent bond
van der Waals bond
Nonpolar covalent bond
Hydrogen bond
Ionic bond
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following CANNOT participate in hydrogen bond formation?
the O in O-H
the N in N-H
the H in C-H
the H in N-H
the C in C=O
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