Lecture 13- Microbial Catabolism Flashcards
Why is the microbial diversity be organized similar to the tree of life?
Because many organism have similar biochemistry and those with differences can be put into another group.
Why is a microbe a bioconversion machine?
B/c it takes 1 compound and CONVERTS it into another
True or False. Can a microbe do more than 1 bioconversions at once?
True
Describe what it means to be a polymicrobial community
A closed system in which multiple microbes feed each other.
Why even do bioconversion?
To sustain the other functions of the microbe
True or False. Bioconversion is always straight forward.
False, it might produce the end product but through a series of steps that often don’t make sense.
True or False. Bioconversion can only take place inside the cell/microbe.
False. Mold’s hyphae secrete enzymes into the external environment and does bioconversion OUTSIDE the cell.
What is needed to maintain the cell in the environment?
a) Repair
b) Replication
c) Adaptation
d) Power
e) All of the above
f) None of the above
E
True or False. The more stable the environment, the larger the genome.
False. The more stable the environment, the SMALLER the environment.
List all of the possible ways for the cell to get power
- Electron transfer
- Charged membrane
- Energy stored in bonds
What are the building blocks needed for ALL cells?
- Carbon Source
- Nitrogen Source
- Sources of other elements (S,H,P,O and ions)
True or False. ATP is the best energy storage
True.
What is an advantage of ATP?
It can be moved and be recharged anywhere in the cell
True or False. NAD+/NADH drive the reactions that produce energy
False. They bring the ELECTRONS and that produce energy via REDOX reactions.
True or False. The reduction reaction and oxidation reaction can ONLY happen in the SAME place.
False. The 2 reactions can happen in different areas and then shuttles take it to the other part of the reaction (i.e NAD+)
Describe the redox tower
The closer the element is bottom of the tower, the more likely it to be REDUCED
The closer the element is top of the tower, the more likely it is to be OXIDIZED
True or False. O2 is the strongest electron acceptor.
True
What are the 2 different types of electron shuttles?
- Prosthetic group (Attached to enzymes)
- Coenzymes (Losing bind to reaction)
- NAD+ and NADH
What are the common coenzymes forms found in cells?
a) NAD+
b) FADH
c) NADH
d) PMF
e) Two of the above
E, NAD+ and NADH
True or False. NAD+ donates electrons and is the reducing agent
False. NADH DONATES electrons and is the reducing agent
True or False. NAD+ and NADH are completely destroyed after being used.
False. They are recycled
The Proton Motive Force (PMF) is
a) a series of pumps that move protons into the cell
b) a series of pumps that move protons in and produces power
c) a pump
B, PMF takes H+ from a high concentration to a low concentration to create a charged membrane which then creates ATP
True or False. PMF is only used to produce ATP
False. It is also drives flagella and pump out toxic drugs
What are the 3 ways that we can classify a cell’s metabolism?
- Energy Source
- Electron source
- Carbon Source
A microbe that gets its energy from chemicals is a ______ whereas a microbe that gets its energy from sunlight is a ______.
a) Phototroph, Chemotroph
b) Lithotroph, Chemotroph
c) Autotroph, Phototroph
d) Chemotroph, Phototroph
D
