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Create and observe bacteria in petri dishes (and then under the 'scope) for my own learning experience. I thought I was being sufficiently sanitary while heating the agar and pouring it into the plates. But before I even got the chance to start up bacteria in one plate to isolate in the other (both plates were supposed to be sterile), there were many colonies growing in both of them. I heat up the agar by boiling it and I held the plates in boiling water just before pouring the agar into them. I try to open the covers a minimal amount while pouring the agar. I put a rubber band around each once I'm done pouring. I'm not sure what else I can do to get a sterile environment in the dishes. Any tips? Also, once I do get to putting bacteria in them, how will I do that sterilely also? I have inoculating loops that I'll sterilize before using but that also requires opening the lids.
If a person has a stomach ulcer that is aggravated by excessive hydrochloric acid {HCl} secretion, why on earth would he or she be drinking milk to feel better,
Chromatographic assay reveals the total amount of T3 in the blood is ten micrograms. You discover that the various bound forms of the hormone are.
The given sequence of a piece of mRNA. Create the sequence of the double stranded piece of DNA from which it was derived. Label the strands: coding, noncoding, template, nontemplate.
A lab is working on drugs that disrupt cell division and have created drugs that inhibit DNA replication in tumor cells. You, being a curious grad student want to test each drug and figure out which DNA replication enzyme it targets.
A young mother is encouraging her son to try another bite of a disliked food. The child is quietly whining, but when the mother spreads the food around to cool it, the child becomes hysterical. Why did child become so upset? Recognize the cognitive s..
As a 1st step towards cloning the ding-dong gene from Drosophila, you find a transposon insertion within the gene.
If oxygen is unavailable, what happens to the citric acid cycle and if necessary, during which stage(s) of cellular respiration is(are) carbon dioxide released?
Large folds in the stomach known ______ increase its surface area and also enable it to fold on itself when empty. The ______ is a valve that enables partially digested food out of stomach into the ______.
Two linked genes, S and T, are separated by 8 cM. Peter, who has the genotype ST/st, marries Oliviam who is st/st. peter's father was ST/ST. what is the probability that peter and olivia's first child will be St/st? What is the possibility that their..
An aquatic arthropod known as a Cyclops has antennae that are either smooth or barbed. The allele for barbs is dominant. In the similar organism, resistance to pesticides is a recessive trait.
Explain the probability that the first child of parents who are heterozygous for both traits will show the achondroplasia however not the Huntington's disorder?
Suppose that the cells grow to about 10^5 cells per squre cm and contain about 10pg RNA per cell, determine the theoretical yield of RNA from one of your samples.
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