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Micro Chapter 8
Test Description: Micro Chapter 8
Instructions: Answer all questions to get your test result.
1) Which of the following describes a molecule that had an electron removed?
A
electronated
B
oxidized
C
reduced
D
anabolized
2) Which site on an enzyme is where substrates bind?
A
the catalyst site.
B
the lock and key site.
C
the active site.
D
the activation site.
3) Which of the following best describes catabolic pathways?
A
They build up large molecules from smaller components.
B
They always absorb energy
C
They break down large molecules into smaller components.
D
They must be coupled with the breakdown of ATP.
4) Which of the following is a pathway that breaks down glucose in some microbes?
A
the Calvin cycle
B
the Entner-Doudoroff pathway
C
the tricarboxylic acid cycle
D
the Krebs cycle
5) The Krebs cycle begins with the addition of acetyl CoA to which of the following?
A
oxaloacetate
B
ribulose bisphosphate
C
citric acid
D
succinate dehydrogenase
6) Which of the following is the purpose of fermentation?
A
to regenerate oxygen
B
to produce large quantities of additional energy
C
to regenerate NAD+
D
to produce carbon dioxide
7) ATP is produced through oxidative phosphorylation when which of the following occurs?
A
NADH donates electrons to NADH dehydrogenase
B
FADH2 donates electrons to succinate dehydrogenase
C
H+ moves through ATP synthase
D
the light-independent reactions fix CO2
8) Fermentation is necessary because it provides additional ATP compared with glycolysis alone.
A
True
B
False
9) The enzyme that brings CO2 into the light-independent reactions of photosynthesis, catalyzing the first reaction, is ribulose bisphosphate carboxylate oxidase (RuBisCO)
A
True
B
False
10) Uses light energy and an organic carbon source
A
chemoautotroph
B
photoheterotroph
C
chemoheterotroph
D
photoautotroph
11) What is incorrect concerning the process of translation?
A
A ribosome must be present in order for translation to start
B
A hydrogen bond forms between the two amino acids after tRNA has brought them to the ribosome
C
The genetic code is used to code for the proper amino acid
D
After translation, a polypeptide is formed
12) Which component in an operon is incorrectly matched with its function?
A
promoter—where RNA polymerase binds to DNA
B
structural gene—makes mRNA by transcription
C
operator—if repressor not bound, RNA polymerase can bind to DNA
D
regulator—binds to the repressor protein
13) Given this DNA: ATGCGAATC, what would the mRNA strand look like?
A
UACGCUUAG
B
ATGCGAATC
C
CTAAGCGTA
D
TACGCTTAG
14) F+ bacteria contains a ____________, which is passed on to the F- cell. This cell can become a ______ cell, allowing it to integrate into the chromosome.
A
plasmid; HFr
B
plasmid; F+
C
chromosome; F+
D
chromosome; HFr
*select an answer for all questions
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