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Q1. You have collected an air sample by using a pump which draws 1cfm (cubic foot/minute). You collected a sample for 5 minutes directly on appropriate microbiological media. Following incubation you observed an average of 55 colonies on the plates. How various organisms are present in 1m3 of air given these conditions?
Q2. We are told that every surface we touch is teeming with bacterial cells, and bacteria are found in the pools we swim in, water we wash with, and on the hands of friends. Why don't we always have problems with bacterial infections all over our bodies?
Why or why not explain with reason? Work the genetics problem predicting the frequencies of the versions of this trait among their prospective children.
What are differences among eukaryotic cells . Why do you think she is having arrhythmias.
Advantages and disadvantages of mesoderm, the need of modifications for the elimination of nitrogenous waste, and a description of protonephridial function.
Madagascar, Indonesia and the Amazon basin have some of the greatest numbers of different species concentrated in a single area. What kinds of environments do you think encourage greater biodiversity.
Why are algae important in nature. Joan and Alex Smith have five daughters who are quite dissimilar in appearance and talents. Examine why this occurs based on the 2 events in meiosis that enhance genetic diversity.
How does your answer make clear that why antibiotic resistance evolves so fast. What is the equilibrium frequency of the resistant allele in the absence of methicillin.
A 40 year old woman was admitted into ER with fever, chills, and a dry cough with little sputum. Epidemiologists isolated pathogen in the cooling system of the air conditioning unit.
He says that the mere presence of DNA is not sufficient to prove the point: his cells may have adopted DNA as a useful molecule quite independently of all other known life forms. What would you do to convince him that he was wrong.
The most significant probable cause of this temporary apnea is decreased activity of the what. what is the probability that the next child would be a girl.
What is Spock's genotype? What is Spock's wife's genotype? What percentage of their offspring would have the similar phenotype as Spock.
How, at what time the shoot tip touched the other plant's stem did the shoot switch from growing straight to growing in a spiral? Write down a hypothesis first.
How many different combinations of phenotypes could exist of these 7 paired traits . What proportion would be heterozygous in every trait after 2 years.
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