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Q. What differences in detail do you notice in freshly prepared versus permanently mounted tissue? How did the steps of preparations (with fresh microtome samples or staining and fixing of permanent mounts) affect the appearance of the samples? Tabulate some advantages and disadvantages of each. What component of root-tip cells is stained by Safranin in the permanent mount of a longitudinal section of a corn root tip? What component of root-tip cells does Fast Green stain? What could different stains such as these indicate with respect to cell division, differentiation, and function?
What percent of all the enzyme molecules will have their Cys thiol in the active form at pH 8.6. Some mammals might run or fight when frightened. For both of these examples, illustrate the physiological mechanisms involved in the answer.
What phenotypic ratio would you get if you crossed a white mouse and a heterozygous brown mouse?
A friend has just returned from a trans-Atlantic jet aircraft flight and reported that the plane dropped about1000 m when it entered an "air pocket." Explain to a friend what apparently happened to cause this drop.
A middle-aged man comes in since he has noticed multiple small, blood-red, raised lesions over his anterior chest and abdomen for past numerous months. They are not painful and he has not known about any bleeding or bruising. He is concerned this mig..
Point out similarities and differences in their scientific foundation. What is the mainly abundant cell type? Which is the slightest prevalent.
What are genotypes of all the individuals mentioned in this difficulty. What is the point of the agar dish not treated with X-gal.
The pH of the inner thylakoid space had been measured, as have the pH of the stroma and the cytosol of a particular plant cell. Why will this cause the pH in the thylakoids to be lesser than the pH in the stroma.
Explain the main types of extracellular signaling.
Why benefits are strategically significant to employers and what is some main strategic consideration. What parts of the cell did molecules in this tube probably come from? Describe briefly.
The movement of glucose into a cell against a concentration gradient is most likely to be accomplished by which of the subsequent. movement of glucose into the cell through a glucose channel.
Describe how EDTA promotes the dissociation of animal cell tissue. How various genotypic and phenotypic combinations are possible in the offspring of a brown-eyed, red-haired, taster man with AB blood group (Bb rr Tt AB) married to the blue-eyed, non..
In an experiment you are studying a neuron that receives synaptic inputs from two other neurons: one from neuron A and one from neuron B. Illustrate a separate graph for each value of Vm.
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