MICR 2123 Final Okstate Tested Questions & Revised Answers All Updated
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Module
MICR 2123 Okstate
Institution
MICR 2123 Okstate
MICR 2123 Final Okstate Tested Questions & Revised Answers All Updated
Lactic acid is a byproduct of _____ and _____ fermentation. - Answer-homolactic and heterolactic
During respiration, which step(s) produce(s) NADH starting from pyruvate? - Answer-both PDC and TCA produce NADH
If the ETS...
MICR 2123 Final Okstate Tested
Questions & Revised Answers All
Updated
Lactic acid is a byproduct of _____ and _____ fermentation. - Answer-homolactic and
heterolactic
During respiration, which step(s) produce(s) NADH starting from pyruvate? - Answer-
both PDC and TCA produce NADH
If the ETS is halted (i.e. stopped working) during respiration, for example when the cell
runs out of an electron acceptor, what would be the other way of recycling the NADH? -
Answer-Fermentation
The proton motive force is created during the operation of this process in respiration. -
Answer-ETS
Hydrogenotrophs are organisms that have an ETS in their membrane and they can use
H2 (molecular hydrogen) as their electron donor and O2 as their electron acceptor.
Based on this information, what kind of process do hydrogenotrophs carry? - Answer-
aerobic lithotrophy
From your knowledge about electron donors, which of these do you think could be an
electron donor? - Answer-NADH, H2S, NH3
Cyanobacteria use energy from light. What would this make cyanobacteria? - Answer-
phototrophs
In class, Dr. Youssef told us that the majority of lithotrophs use CO2 as their carbon
source. What would this make the majority of lithotrophs? - Answer-autotrophs
Carbon is an essential element for biosynthesis. What are the possible forms of C used
in biosynthesis. - Answer-C or CO2
N is another essential element for biosynthesis. Easily accessible N in _____ can be
used by virtually all organisms as a source of N. - Answer-ammonia
In biosynthesis of purines and pyrimidine, nucleotides for _____ are made first? -
Answer-RNA
, This group of bacteria carry out the same type of photosynthesis and fix CO2 using the
same CO2 fixation pathway as green plants do. - Answer-cyanobacteria
What do nitrogen fixation and CO2 fixation have in common? - Answer-they both are
energy intensive processes and both require a large input of reducing power in the form
of NADPH
Which of these receive electrons from NADH during fermentation? Or in other words
who was the acceptor of electrons during fermentation? - Answer-pyruvate
Which of the following could act as a terminal electron acceptor in anaerobic respiration
or anaerobic lithotrophy? - Answer-nitrate and sulfate
In class we talked about how electron cannot "fly" or "swim" and that for them to move
from one substrate to the next they need to be carried on electron carriers. Accordingly,
how many forms does an electron carrier have? - Answer-2
In green plants, algae and cyanobacteria, CO2 if fixed through - Answer-the Calvin
cycle
In amino acid biosynthesis, the amino acid group can be transferred between molecules
in a process known as - Answer-transanimation
T/F: Lithoautotrophs can use substrate level phosphorylation to make ATP. - Answer-
false
T/F: While it is beneficial to have the ETS components embedded in a membrane, they
don't necessarily need to be present in the membrane. - Answer-false
T/F: The difference between anaerobic respiration and anaerobic lithotrophy is in the
nature of the electron acceptor. - Answer-false
T/F: phototrophs use an ETS - Answer-true
T/F: there is only one way to fix CO2 - Answer-False
In highlight of what we discussed for microscopy, which of these statements is true? -
Answer-magnification leads to better resolution
This type of microscopy, uses a condenser to collect light rays that are usually scattered
and uses them for visualization. - Answer-dark-field microscopy
In which of these types of light microscopy is the field dark? - Answer-both dark-field
and fluroescence
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