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Cell A secretes Substance M. Substance M travels via the blood and reaches cell B. Substance M binds to a receptor on the surface of cell B. Cell B responds by increasing its production and release of Substance N. what type of chemical messenger is Substance M? a. paracrine b. messenger of direct communication (MDC) c. hormone d. neurotransmitter e. not enough information is given to answer the question.
Suppose that red reen color blindness is a recessive sex linked trait. A normal man mates with a color blind woman, what can we expect their children to be? Explain your answer.
How many DNA and RNA sequences are possible that give you this protein sequence?
When the children of various such two-child families are totaled, what proportion of children in these families will show the phenotype.
In what way does the fertilization and development of the conifer seed differ from that of the angiosperm?
You now grow Daphnia and Bosmina together. Suppose they remain limited by phytoplankton. What genetic basis of erminette pattern is suggested? How would you test your hypothesis.
Evolution is considered the unifying theme of biology. How do cell ultrastructures support this idea? Provide examples of modifications and specializations in specific types of cells.
Describe the process of global warming, greenhouse gases, and the greenhouse effect.
Identify sister taxa, then larger groups that share a common ancestor. Create an phylogenetic tree showing the evolutionary relationships among these ten species.
give Name the three major components of a homeostatic control system and tell briefly the function of each component.
Explain the results. Show the genotypes of the parents, and construct a linkage map showing the correct order and distance of the loci.
the original concentration in a sample is 2.79*10^6 CFU/ml. which sample volume should yield a countable plate? (express your answer as 10^x mL.)
Most of us can't even imagine a world without oxygen. Though, as you learned earlier, chemically oxygen is a powerful oxidizing compound. What effect(s) would the increase in oxygen levels of atmosphere have on the organisms that existed at that time..
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