Micro Chapter 8 Question Preview (ID: 62619)
Micro Chapter 8.
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Uses light energy and an organic carbon source
a) photoheterotroph
b) photoautotroph
c) chemoheterotroph
d) chemoautotroph
Fermentation is necessary because it provides additional ATP compared with glycolysis alone.
a) True
b) False
c)
d)
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
c)
d)
Which of the following is the purpose of fermentation?
a) to regenerate NAD+
b) to regenerate oxygen
c) to produce carbon dioxide
d) to produce large quantities of additional energy
ATP is produced through oxidative phosphorylation when which of the following occurs?
a) FADH2 donates electrons to succinate dehydrogenase
b) NADH donates electrons to NADH dehydrogenase
c) H+ moves through ATP synthase
d) the light-independent reactions fix CO2
Which of the following is a pathway that breaks down glucose in some microbes?
a) the Entner-Doudoroff pathway
b) the Calvin cycle
c) the Krebs cycle
d) the tricarboxylic acid cycle
The Krebs cycle begins with the addition of acetyl CoA to which of the following?
a) citric acid
b) succinate dehydrogenase
c) ribulose bisphosphate
d) oxaloacetate
Which of the following best describes catabolic pathways?
a) They always absorb energy
b) They break down large molecules into smaller components.
c) They build up large molecules from smaller components.
d) They must be coupled with the breakdown of ATP.
Which site on an enzyme is where substrates bind?
a) the activation site.
b) the catalyst site.
c) the active site.
d) the lock and key site.
Which of the following describes a molecule that had an electron removed?
a) anabolized
b) electronated
c) oxidized
d) reduced
What is incorrect concerning the process of translation?
a) A ribosome must be present in order for translation to start
b) After translation, a polypeptide is formed
c) The genetic code is used to code for the proper amino acid
d) A hydrogen bond forms between the two amino acids after tRNA has brought them to the ribosome
Which component in an operon is incorrectly matched with its function?
a) structural gene—makes mRNA by transcription
b) regulator—binds to the repressor protein
c) operator—if repressor not bound, RNA polymerase can bind to DNA
d) promoter—where RNA polymerase binds to DNA
Given this DNA: ATGCGAATC, what would the mRNA strand look like?
a) TACGCTTAG
b) CTAAGCGTA
c) UACGCUUAG
d) ATGCGAATC
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) chromosome; F+
b) plasmid; HFr
c) chromosome; HFr
d) plasmid; F+
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