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Question: Traditionally, it was thought that the nucleus was the control center of the cell. Recent discoveries though, indicate that the nucleus in eukaryotes is merely a repository of genetic data, and that the cell membrane controls the expression of genes by serving as an interface with the external environment. Discuss the the evidence that supports the hypothesis of cell membrane control.
A man with a chin dimple and a non dimpled woman produce eight children, all having the chin dimple. Can you be certain of the man's genotype? Why or why not? What genotype is more likely, and why gives reason.
Artificial electron acceptors can be used to detect a exact organelle by cytochemistry. Name this organelle and outline the procedure that you would use to detect this organelle by cytochemistry.
Assume that r, red and sc, scarlet, are two recessive eye-color mutations that lie twenty map unites apart on the Drosphila X chromosome, and that each causes a read eye color in place of the wild type purple color.
Now that you've arrived at the lung, describe the structures you see and narrate how the body combats the invading bacterium using the knowledge you have grinded in the first 4 units. Address both specific and nonspecific immunity and the cells that ..
What are the two exceptions to the general rule that all cells in the human body contain a complete, identical copy, of a person's DNA?
Point out similarities and differences in their scientific foundation. What is the mainly abundant cell type? Which is the slightest prevalent.
The group of molecular biologists is trying to synthesize a new artificial compound to mimic the effects of a known hormone that influences sexual behaviour. They have turned to you for advice.
Suppose that an animal that has a system similar to ABO blood types in humans. The ABO part is the same. In addition, they have a second independent gene that makes a mimic A protein
A mammal uses only 1 to 2 percent of its energy in ventilation while a fish must spend about 15 percent of its energy to move water over its gills. Describe this huge difference in their efforts to collect oxygen.
Describe why people confined to wheelchairs as of paralyzed lower limbs have thin, weak bones in their thighs and legs.
The organism you select should be a real one however the evolutionary change in a trait which you explain can be real or fiction. Describe how the change in this trait takes place.
Use the spinal tracts discussed in class, categorize them into sensory vs motor and conscious vs unconscious pathways.
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