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diagram and describe how countercurrent exchange mechanism work use specify examples for 1. gas exchange 2.thermoregulation 3. osmoregulation and 4. reducing the evaporative water lose when breathing ( 1 example for each)
Describe the bacterial chromosome and outline the process by which it replicates by the semi-conservative method of replication.
Describe why the medium dyes diffuse through can affect the rate of diffusion. How does this relate to nutirent transport into cells?
In snapdragons, the the genes A, B, C, and D assort independently of one another. If an Aa Ba Cc Dd plant is crossed with an Aa bb cc Dd plant, what is the probability of obtaining a snapdragon plant that is phenotypically dominant for all four tr..
What are some reasons for reestablishing wolves in Yellowstone National Park? What effects might the reintroduction of wolves have on the ecological communities in the region? What might be completed to mitigate the conflicts between ranchers and wol..
DNA is isolated from two different species. Both DNA samples are found to be exactly the same size. One of the DNA samples has a G+C/A+T ratio of 4.8 and the other 3.2.
Assume you are working in a winery. You just determined that a wine sample contained 3.0 × 108 yeast/ml by analyzing its turbidity.
The most abundant from of phosphorous has 15 protos, 16 neutrons and 15 electrons. Determine which of the following is an isotope of pgisphorous?
What is the name of the epithelial cells that make up the epidermis? -What is the cytoplasmic intermediate filament found in these epithelial cell junctions ? -What is the name of the junctions that links the intermediate filaments of the epitheli..
Hypothesize how recombination might adversely affect the functioning of an operon such as the lac operon or the trp operon. What might be the metabolic implications for an E. coli cell that experiences a disruption of one of these operons?
Phenol Red Broth is a differential test medium prepared as a base to which a carbohydrates is added. Included in the base medium are peptone and the pH indicator phenol red.
A relative of a friend of yours had a spinal cord injury after a bad car accident. The medical team has decided that this patient is a good candidate for a clinical trial using stem cell therapy.
Why is it more important to use fresh cultures in the Coagulase test than in a test medium such as milk agar?
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