WorksheetsLecture 10-12 MICROBIOLOGY
Total questions: 24
Worksheet time: 15mins
Bacteria reproduce by the answer blow except
Binary fission
Budding
Fragmentation
Plasmogamy
Select two phases of growth.
life phase
stationary phase
Exponential phase
Term phase
The below are direct methods except
plate count
MPN
filteration
turbidity
What is meaning of lag phase?
Number of cells no cange
Cells grow in the fastest rate
Cells population stabilizes
Death exceeds new cells
Which of he following done by pour plate/spread plate?
filteration
plate count
MPN
direct microscope counts
Methylene blue is used to measure oxygen uptake. Which of the following are suitable with the statment above?
Turbidity
Dry weight
Reduction test
Metabolic activity of population
Soil consists of
oil
soap
air
decay products
Soil contains microbes except:
bacteria
fungi
actionomycetes
archaebacteria
Most plant pathogens are foun in soil. State what kind of the pathogen is.
(a)
The diamond shape crystal next to endospore is (a) to insects that digest it.
The following are biogeochemical cycle except
Sulphur cycle
Potassium cycle
Carbon cycle
Nitrogen cycle
What are the function of photoautotrophs in carbon cycle?
To produce CO2 for the beginning process
To fixed CO2 in organic compound
To provide CO2 for chemoheterotrophs
To breakdown O2 for food chain
What are the function of chemoheterotrophs?
To provide CO2 for photoautotrophs
To provide O2 for photoautotrophs
To provide O2 for food chain
To provide CO2 for food chain
The following are the processes of nitrogen cycle except:
Nitrogen fixation
Denitrification
Nitrification
Eutrophication
Microbes decompose dead cells to amino acid then turn into ammonia (NH3). The process is called (a) .
Microbes degrade pollutants & enchanced by nitrogen & phosphorus fertilizer. Which of the following are suitable for this process?
Biodemediation
Bioaugmentation
Composting
Eutrophication
Thermophiles arrange oganic waste to support microbial degration later. Which of thee following are suitable for this process?
Bioremediation
Bioaugmentation
Composting
Eutrophication
Mycorrhizae live in plant roots to (a) surface area & easilt absorb nutrient.
Which of the following can be found in Limnetic zone?
Pseudomonads
Purple sulfur bacteria
Methane bacteria
Desulfovibrio
Why microbes forms less in seawater
high temperature
low nutrient
low pH
low osmotic pressure
Which of the following cuse overgrowth of algae (eutrophication)?
Mercury
Sulfuric acid
Phosphates
Pseudomonas
(a) are gram-negative bacteria. In ONPG test, they turn yellow if they are present.
(a) treatment is a treatment for domestic water.
Sewage treatment are divided into the following except:
Primary treatment
Secondary treatment
Quaternary treatment
Tertiary treatment
