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Describe how you would identify E. coli mutants that cannot utilize galactose as a carbon (energy) source. You are given a test tube containing E. coli grown under full nutrition, a spreader, filter paper, Petri plates with agar gel containing various nutrients, and an incubator. There are two kinds of Petri plates provided: agar gel was made with either inorganic salt + glucose [plate A], or inorganic salt + galactose [plate B].
Calculate the free energy of transfer involved in the hypothetical transfer of electrons from complex 1 to complex 4. The electron reduction potential of complex 1 in -0.32V. Complex 2 is +0.03V. Complex 3 is +0.04V. Complex 4 is +0.23V.
At what trophic level in man's food chain are plants that produce grain, such as wheat, barley, and oats? At what level is man in relationship to these plants?
Discussion what types of diseases can occur when there are errors in meiosis? Why do these diseases occur?
In the F2 generation, you find that you have 235 flies displaying the wild type phenotype and 765 flies displaying XYZ phenotype. Which phenotype, Wild type or XYZ, is dominant.
Two heterozygous individuals have mated. How many different genotypes can be present in the offspring?
Consider the HIV enzyme called protease. The amino acid residues at the active site are highly hydrophobic. In designing a drug that would bind to the active site and jam it, researchers should use which sort of molecule.
Imagine looking during a microscope at a squashed onion root tip. The chromosomes of many of cells are plainly visible. In some cells, replicated chromosomes are aligned along center (equator) of the cell. These particular cells are in which stage of..
Mouse L-cells have proven to be an extremely useful model system for investigating the properties of cadherins because they do not normally express any cadherins.
The global community is plagued by increasing incidence of lung cancer, colorectal cancer, breast and pancreatic cancers, prostate cancer, leukemia, non-Hodgkin lymphoma, liver, ovarian and esophageal cancers.
Discuss and define subinvolution. List the symptoms. How is this treated? What surgical procedure might be needed?
You decide to climb Mt Everest and someone tells you it takes 2-months. Estimate the number of times you would stop and explain why you need to acclimatize. Describe all the physical effects on your body and the dangers.
An achondroplastic male dwarf with normal vision marries a color-blind woman of normal height. The man's father was six-feet tall, and both the woman's parents were of average height. Achondroplastic dwarfism is autosomal dominant, and red-green c..
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