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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.
Choose two organelles and compare them relative to structure and function. Describe what would be the specific probable effects on the cell if each of these organelles were lost.
Compare and contrast signaling by neurons which secret neurotransmitters at synapses to signaling carried out by endocrine cells, that secretes hormones into the blood, define the relative advantage of the two mechanisms.
Suppose that a light-sensitive cell in the eye of a particular invertebrate. The cell membrane contains cGMP-gated K+ channels.
Along with phenylpyruvic acid, ammonia is manufactured as a result of phenylalanine deamination. Could you think of a way in which the production of ammonia could be used as an indication of a postiive reaction?
Plasmid size of pGLO is 5371 bp and the restriction sites for Pst I are 2106 and 3181. Compute to predict the sizes of fragments when gPLO is digested with PstI.
One hundred microliters of this pigment was dissolved in 5 mls acetone=call this A. 5 mls acetone was added to A=call this B. 5 more mls of actone was added to B= call this C and List the sensory receptors found in the dermis of the skin.
Discuss a major difference in the action of a water soluble hormone versus a lipid soluble hormone. The use of transport proteins.
For a particular trait, an organism has the genotype Dd. Based on this information you can be certain that:
He was puzzled, combative, and he refuses to drink any water or any liquid. He lived on Oct. 7th, 1849. While said to the man's name, the student thought "Nevermore!" What was his diagnosis.
Assume if you have flown in a commercial airliner, you have heard the flight attendants instruct you that in case of a sudden loss of cabin pressure, oxygen masks will be deployed.
What is the genotypic and phenotypic ratio in the offspring produced by the cross AABb x Aabb if A is green colour, a - yellow; B- tall plants. b -short plant? Suppose complete dominance for the trait. Describe results of the cross using branching di..
What aspects of social and work environment in a college cafeteria will be of particular interest to a sociologist since of his or her sociological imagination.
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