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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?
This one requires that you think about what limits the respiration rates in states IV, III, and in uncoupled mitochondria. Which of the following situations should produce the fastest rate of respiration? Let the substrate be the same in each case..
What will happen to the age structure of the population? What about birthrates?
Identify three combinations that are DNA nucleotides.
The branching gastro vascular cavity of cnidarian and Platyhelminthes: Do these animals have distinct boundary organs? Compare and contrast the basic body plan of these animals? How does the fluid "circulate" without one or more pumps? Explain why..
Americans alone produced over 250 million tons of garbage. One large component of this waste consisted of oil based plastic bags, which are utilized excessively by grocers, restaurants, and stores nationwide.
Cystic fibrosis is a genetic disease that leads to formation of thickened mucus in the lungs, pancrease, and other organs. In the lungs, the mucus impeads airflow and the removal of particulates leading to infection.
Acclimation to high altitude affects both the affinity of hemoglobin for oxygen and the total binding capacity. What are the important mechanisms that operate over the course of many days that account for these physiological changes?
In your own words, what is homeostasis? Explain completely. What happens when homeostasis is not maintained?
q1. whilst playing lacrosse frank took a blow to the back of his neck. this caused swelling of the posterior spinal
Carotenoids are frequently found in foods that are considered to have antioxidant properties in human nutrition. What related function do they have in plants.
although energy can be neither created nor destroyed, it can be transformed. What are some examples of energy transformation? With each transformation or energy transfer, what happens to energy?
When yellow mice are crossed with albinos, they produce F1 mice consisting of ½ albinos, ? yellow and 1/6 agouti. What are the possible genotypes of the parents.
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