Self Quiz How much did you learn on your journey? Perform a self-diagnostic. (1)

Question

Self Quiz
How much did you learn on your journey? Perform a self-diagnostic.
(1)   Catabolism is best defined as which of the following?
a.   The sum of all the chemical processes carried out by living organisms
b.   Reactions that release energy by breaking complex molecules into simpler ones that can be re-used as building blocks
c.   Reactions that require energy to synthesize complex molecules from simpler ones
d.   ATP synthesis as a result of proton movement across a membrane
  
(2)   In step 6 of glycolysis, electrons are donated to the coenzyme, NAD+. In this process, NAD+ is:
a.   reduced
b.   oxidized

(3)   The conversion of glucose to glucose-6-P (G6P) in the first step of glycolysis is catalyzed by the enzyme hexokinase. The activity of this enzyme is inhibited by high levels of G6P. Which of the following is not true?
a.   This is an example of feedback inhibition
b.   G6P is a competitive inhibitor of hexokinase
c.   G6P likely binds to an allosteric site on hexokinase
d.   G6P is a noncompetitive inhibitor of hexokinase

(4)   True or False, aerobic organisms do not perform glycolysis.

(5)   True or False, during fermentation anaerobic organisms generate two additional ATPs.

(6)   Which of the following products of the Krebs cycle is used to generate the most ATP?
a.   CO2
b.   GTP
c.   FADH2
d.   NADH

(7)   In the electron transport chain, in aerobic organisms what is the final electron acceptor?
a.   Water
b.   CO2
c.   ATP
d.   Oxygen
e.   NAD+

(8)   Chemiosmosis is the process by which what molecules are pumped through the ATP synthase along the concentration gradient in order to convert ATP from ADP and inorganic phosphate?
a.   Electrons
b.   Glucose
c.   Protons
d.   NADH
e.   CO2

(9)   Aerobic organisms have the capability of producing approximately how many times more ATP from a single glucose molecule than anaerobic organisms?
a.   2x more
b.   10x more
c.   20x more
d.   100x more
e.   They both produce approximately equal amounts of ATP

Explanation / Answer

Ans1.B. reactions that releases energy by breaking down Complex molecules into simpler forms.

Ans 2. A. Reduced

Ans 3.B. G6P is a actually a non-competitive inhibitor of hexo kinase.

Ans4 . false. Aerobic organism do perform glycolysis.

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