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1. WHY bacillus subtilis had a growth and was resistant to moist heat method? EXPLAIN
2. Why E.coli was not resistant to moist heat method?
3. To which antibiotics was the M. luteus: most sensitive?
4. To which antibiotics was the E. coli most sensitive?
5. The autoclave sterilization cycle is usually selected so that bacterial endospores are killed. Why is it so important to kill endospores? Did the 15 min cycle kill the endospore strip placed in the large mass of material? If not, why not?
6. What is the spore strip? What is its role in sterilisation?
7. In what circumstances and for what types of equipment should heat sterilisation be used?
8. When would U.V. sterilisation be used? Include examples in your answers
Describe how an increase in the carbon dioxide levels in the blood and interstitial fluid affects the heart, blood vessels, hemoglobin dissociation curve, and the respiratory system.
Genetic Drift and the Founder Effect- There are two types of genetic drift. Describe and give an example of both the bottle neck effect and the founder effect.
1. Why is the method called as trypan blue exclusion technique? 2. What is trypsin and is it function?
What would DNA footprinting reveal about the DNA binding sites of a normal Lac repressor protein? A normal RNA polymerase.
There is a great debate regarding GMO foods. Explain the difference between genetically modified crops and non-genetically modified crop hybrids.
How long is the observation period, what parameters to observe, how to measure the parameters, how frequently will you observe the parameters?
Can someone explain the differences between SNPs, RFLPs, minisatellites, and mircosatellites? And which ones are sequence variations or size variations?
Describe the functional and anatomic differences between rods and cones. Describe the factors that contribute to sound localization.
Overall, how has the earth's biodiversity changed through time? How did the activities of living organisms change the planet in a way that made it possible
Are the chromosomes in mitosis a mixture of mother and father chromosomes?
In an electrophilic aromatic substitution reaction, does the aromatic ring act as an electrophile or a nucleophile? Please show the first step
What is the membrane protein that provides a passageway across the cell membrane through which an ion can diffuse?
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