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Fall 2009 Semester Review Quiz

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 
When NAD+ combines with hydrogen, the NAD+ becomes
a.
reduced.
b.
oxidized.
c.
phosphorylated.
d.
denatured.
e.
none of these
 

 2. 
During enzyme-catalyzed reactions, substrate is a synonym for
a.
end products.
b.
byproducts.
c.
enzymes.
d.
reactants.
e.
none of these
 

 3. 
Movement of a molecule against a concentration gradient is
a.
simple diffusion.
b.
facilitated diffusion.
c.
osmosis.
d.
active transport.
e.
passive transport.
 

 4. 
Which statement is true?
a.
A cell placed in an isotonic solution will swell.
b.
A cell placed in a hypotonic solution will swell.
c.
A cell placed in a hypotonic solution will shrink.
d.
A cell placed in a hypertonic solution will remain the same size.
e.
A cell placed in a hypotonic solution will remain the same size.
 

 5. 
A nucleotide may contain a
a.
purine.
b.
pentose.
c.
phosphate group.
d.
pyrimidine.
e.
all of these
 

 6. 
In the bonding of nitrogenous bases
a.
adenine is paired with cytosine.
b.
adenine is paired with guanine.
c.
cytosine is paired with thymine.
d.
guanine is paired with cytosine.
 

 7. 
Replication of DNA
a.
produces RNA molecules.
b.
produces only new DNA.
c.
produces two molecules, each of which is half-new and half-old DNA joined lengthwise to each other.
d.
generates excessive DNA, which eventually causes the nucleus to divide.
e.
is too complex to characterize.
 
 
Using the diagram answer the following questions.

nar001-1.jpg
 

 8. 
Which of the following correctly  matches the chemical nature with the identified regions?
a.
2.....polar
b.
3.....charged
c.
4.....rotational
d.
1..... hydrophilic
e.
all of the above are correctly matched areas
 

 9. 
Glycolysis leads to the production of ____________ and two molecules of ATP.  In the absence of oxygen, fermentation leads to the production of ______________. Glycolysis plus the citric acid cycle can convert the carbons of glucose to _________ , storing the energy as ATP, _____________ and ___________.
a.
lactic acid, pyruvate, carbon dioxidem NADH, FADH2
b.
pyruvate, lactic acid, carbon dioxide, NADH, FADH2
c.
carbon dioxide, NADH, FADH2, lactic acid, pyruvate
d.
oxygen, lactic acid, pyruvate, FADH2
e.
glucose, lactic acid, carbon dioxide, NADH, FADH2
 
 
Observe the following image carefully and answer the following questions.

nar002-1.jpg
 

 10. 
The image above is a example of a --- cell, which is a --- type of cell.
a.
plant cell........prokaryotic
b.
animal......eukaryotic
c.
plant........eukaryotic
d.
bacteria......viral
e.
walled........rotational
 



 
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