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(solution) Microbiology Unit 2 Applied and Environmental Assignment Part 1:


please help me with this microbiology assignment. It is due tomorrow 12pm (EST)


Microbiology Unit 2 Applied and Environmental Assignment

 

Part 1: Identify Nutritional requirements from Chapter 6 & 14 (and review from chapters 1 & 2)

 

1. Determine which of the 4 macromolecules require the following elements:

 

a. Carbon:

 

carbohydrates___

 

lipids___

 

proteins___

 

nucleic acids___

 

b. Nitrogen:

 

carbohydrates___

 

lipids___

 

proteins___

 

nucleic acids___

 

c. Sulfur: carbohydrates___ lipids___ proteins___ nucleic acids___ 2. The essential elements mentioned above are cycled through cells and the earth in biogeochemical cycles

 

like the carbon cycle, the nitrogen cycle, and the sulfur cycle. Select the correct answer and fill in the blanks

 

to summarize these cycles:

 

a. Carbon dioxide is taken in from the atmosphere by [autotrophs/heterotrophs] and converted to

 

glucose through carbon ________________. When heterotrophs eat autotrophs they catabolize

 

glucose to make ATP through __________________ and waste carbon is released as ___________.

 

b. There is plenty of nitrogen available in the atmosphere but it is not accessible to organisms because it

 

is in the form of Nitrogen gas (N 2). N2 is fixed by [bacteria/plants/animals] and converted to ammonia

 

(NH3.) NH3 can be used by [bacteria/plants/animals] to build their cells. Next, by consuming food with

 

amino acids, [bacteria/plants/animals] can get access to nitrogen for their own cellular needs.

 

c. There is also a good quantity of sulfur in dirt, rocks, and the atmosphere. Sulfur cycles between H 2S =>

 

S0 => SO4 => SH groups in Proteins => back to H2S. Using _________________ respiration, anoxygenic

 

photosynthesis, and chemolithoautotrophy [bacteria/plants/animals] convert H2S and S0 to SO4 which is

 

taken in by [bacteria/plants/animals] and used to build their cells. When [bacteria/plants/animals] eat

 

plants they take in essential amino acids containing sulfur and recycle these to make their own

 

proteins.

 

d. _________________ break down waste and dead organisms and recycle nutrients back into the cycles.

 

*The C and N are summarized here: https://youtu.be/2D7hZpIYlCA and https://youtu.be/leHy-Y_8nRs

 

3. Identify the main metabolic classifications:

 

a. A microbe that makes its own food by taking carbon from CO 2 in

 

the atmosphere and its energy from sunlight

 

b. A microbe that makes its own food by taking carbon from CO 2 in

 

the atmosphere and its energy from reduced inorganic chemicals

 

c. A microbe that eats other organisms to get organic carbon and

 

energy

 

d. A microbe that uses organic carbon from others but energy from

 

sunlight

 

Part 2: Unique ecosystems containing microbes 4. Watch the video that shows hydrothermal vents: https://youtu.be/RO3nO98gH_M

 

a. Describe bacteria that live at the vents using terms from the unit 2 reading guide:

 

________________________________________________________________________

 

b. Write a 3-4 sentence reflection about hydrothermal vents and the contribution of microbes to this

 

ecosystem: 5. Apply what you have learned to the TED-Ed video about Biofilms: https://youtu.be/pHLP5CZMnL4

 

a. Identify the cell structures mentioned in the video that we learned in Chapter 4 and 7:

 

i. ?sticky appendages? that allows bacteria to attach and begin the biofilm:

 

_______________

 

ii. Extracellular matrix/gooey matrix that holds cells together: ____________________________

 

iii. Exchange genetic information while packed together:

 

____________________________

 

iv. Communicate with each other by _________________________________________ sensing.

 

v. Produce chemical to kill microbial competitors:

 

____________________________ factor.

 

b. Write 2 sentences to summarize the contributions of microbes to global ecosystems: Part 3: Complete the concept map to examine ecosystem relationships from Chapter 14

 

Sunshine

 

9c._____________ CO2 in atmosphere Soil

 

9a._______________ 9g._____________

 

Uses light energy

 

9d._____________

 

(photoautotroph)

 

Uses inorganic

 

compounds for energy Recycle dead

 

organic matter

 

9b._____________ 9h._________________

 

(chemolithoautotroph) Consumes autotrophs

 

9e._________________ Causes of energy loss

 

9i.___________________ Consumes other

 

heterotrophs 9j.___________________ 9f.__________________

 

Word Bank for Concept map:

 

Secondary consumer

 

Carbon fixation

 

Primary Consumer

 

Nutrients Conversion to biomass

 

Decomposers Solar energy

 

Heat Primary producer

 

Primary Producer

 


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