Review Game PPT

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Transcript Review Game PPT

Unit 1 Review
AP Biology
LCHS
Water's high specific heat is mainly a
consequence of the
A. small size of the water molecules.
B. high specific heat of oxygen and
hydrogen atoms.
C. absorption and release of heat when
hydrogen bonds break and form.
D. fact that water is a poor heat
conductor.
E. inability of water to dissipate heat
into dry air.
Why does ice float in liquid water?
A. The liquid water molecules have more
kinetic energy and thus support the ice.
B. The ionic bonds between the molecules
in ice prevent the ice from sinking.
C. Ice always has air bubbles that keep it
afloat.
D. Hydrogen bonds stabilize and keep the
molecules of ice farther apart than the
water molecules of liquid water.
E. The crystalline lattice of ice causes it to
be denser than liquid water.
One of the buffers that contribute to pH stability in
human blood is carbonic acid. Carbonic acid H2CO3 is a
weak acid that dissociates into a bicarbonate ion HCO3and a hydrogen ion. Thus,
H2CO3 <-> HCO3- + H+
If the pH of the blood drops (becomes more acidic), one
would expect
A. a decrease in the concentration of H2CO3 and an
increase in the concentration of HCO3-.
B. the concentration of OH would increase.
C. the concentration of bicarbonate ion (HCO3-) to
increase.
D. the HCO3- to act as a base and remove excess H+ with
the formation of H2CO3.
E. the HCO3- to act as an acid and remove excess H+
with the formation of H2CO3
Carbon dioxide (CO2) is readily soluble in water,
according to the equation: CO2 + H2O  H2CO3
Carbonic acid (H2CO3) is a weak acid. If CO2 is bubbled
into a beaker containing pure, freshly-distilled water,
which of the following graphs correctly describes the
results?
A.
B.
C.
D.
A 100 mL beaker contains 10 mL of NaOH
solution at pH = 13. A technician carefully
pours into the beaker, 10 mL of HCl at
pH = 1. Which of the following statements
correctly describes the results of this
mixing?
+
A. The concentration of Na ion rises
B. The concentration of Cl falls
C. The concentration of undissociated H2O
rises
D. The pH of the beaker's contents rises.
E. The pH of the beaker's contents falls.
Measurements show that the pH of
a particular lake is 4.0. What is the
hydrogen ion concentration of the
lake?
A. 4.0 M
-10
B. 10 M
-4
C. 10 M
4
D. 10 M
E. 4%
Organic chemistry is a science
based on the study of
A. functional groups.
B. vital forces interacting with
matter.
C. carbon compounds.
D. water and its interaction with
other kinds of molecules.
E. inorganic compounds.
Thalidomide
and L-dopa are
examples of
Pharmaceutical
drugs that occur
as enantiomers, or molecules that
A. have identical three-dimensional shapes.
B. are mirror images of one another.
C. lack an asymmetric carbon.
D. differ in the location of their double
bonds.
E. differ in their electrical charge.
What is the name of the
functional group?
A. carbonyl
B. ketone
C. aldehyde
D. carboxyl
E. hydroxyl
Which of the following is a false
statement concerning amino
groups?
A. They are basic in pH.
B. They are found in amino
acids.
C. They contain nitrogen.
D. They are nonpolar.
E. They are components of urea.
Amino acids are acids because
they always possess which
functional group?
A. amino
B. carbonyl
C. carboxyl
D. sulfhydryl
E. aldehyde
A chemist wishes to make an organic
molecule less acidic. Which of the
following functional groups should be
added to the molecule in order to do so?
A. carboxyl
B. sulfhydryl
C. hydroxyl
D. amino
E. phosphate
If 2 molecules of the general type
were linked together, carbon 1 of
one molecule to carbon 4 of the
other, the single molecule that would
result would be
A. maltose.
B. fructose.
C. glucose.
D. galactose.
E. sucrose.
Which of the following statements is true regarding
the molecule?
I. It is a saturated fatty acid.
II. A diet rich in this molecule may contribute to
atherosclerosis.
III. Molecules of this type are usually liquid at
room temperature.
A. I only
D. I and II only
B. II only
E. I, II, and III
C. III only
Polysaccharides, lipids, and proteins are
similar in that they
A. are synthesized from monomers by the
process of hydrolysis.
B. are synthesized from monomers by
dehydration reactions.
C. are synthesized as a result of peptide
bond formation between monomers.
D. are decomposed into their subunits by
dehydration reactions.
E. all contain nitrogen in their monomer
building blocks.
How many different kinds of
polypeptides, each composed of 12
amino acids, could be synthesized
using the 20 common amino acids?
12
A.4
20
B.12
5
C.12
D.20
12
E.20
What would be an unexpected consequence of changing
one amino acid in a protein consisting of 325 amino
acids?
I. The primary structure of the protein would be
changed.
II. The tertiary structure of the protein might be
changed.
III. The biological activity or function of the protein
might be altered.
A. I only
B. II only
C. I and III only
D. II and III only
E. I, II, and III
DNAase is an enzyme that catalyzes the
hydrolysis of the covalent bonds that join
nucleotides together. What would first happen to
DNA molecules treated with DNAase?
A. The two strands of the double helix would
separate.
B. The phosphodiester bonds between
deoxyribose sugars would be broken.
C. The purines would be separated from the
deoxyribose sugars.
D. The pyrimidines would be separated from the
deoxyribose sugars.
E. All bases would be separated from the
deoxyribose sugars.
Which of the following statements about the 5'
end of a polynucleotide strand of DNA is
correct?
A. The 5' end has a hydroxyl group attached to
the number 5 carbon of ribose.
B. The 5' end has a phosphate group attached to
the number 5 carbon of ribose.
C. The 5' end has thymine attached to the
number 5 carbon of ribose.
D. The 5' end has a carboxyl group attached to
the number 5 carbon of ribose.
E. The 5' end is the fifth position on one of the
nitrogenous bases.
Which molecule has hydrophilic and
hydrophobic properties and would be
found in plasma membranes?
A. 1
B. 5
C. 6
D. 12
E. 14
Which of the following molecules
contain(s) an aldehyde type of carbonyl
functional group?
A. 1
B. 4
C. 8
D. 10
E. 1 and 4
Which molecule is a saturated
fatty acid?
A. 1
B. 5
C. 6
D. 8
E. 9
Which of the following molecules act as
building blocks (monomers) of
polypeptides?
A. 1, 4, and 6
B. 2, 7, and 8
C. 7, 8, and 13
D. 11, 12, and 13
E. 12, 13, and 15
Which of the following molecules could
be joined together by a peptide bond as
a result of a
dehydration
reaction?
A. 2 and 3
B. 3 and 7
C. 7 and 8
D. 8 and 9
E. 12 and 13
Which of the following molecules is
the pentose sugar found in RNA?
A. 1
B. 4
C. 6
D. 12
E. 13
Which of the following molecules
consists of a hydrophilic "head" region
and a hydrophobic "tail" region?
A. 2
B. 5
C. 7
D. 9
E. 11
Which of the following pairs of base
sequences could form a short stretch of
a normal double helix of DNA?
A. 5'-purine-pyrimidine-purinepyrimidine-3' with 3'-purinepyrimidine-purine-pyrimidine-5'
B. 5'-A-G-C-T-3' with 5'-T-C-G-A-3'
C. 5'-G-C-G-C-3' with 5'-T-A-T-A-3'
D. 5'-A-T-G-C-3' with 5'-G-C-A-T-3'