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Why have both an endocrine and a nervous system? Although we have not yet studied the endocrine system, you know enough about it to answer the question. Both systems use chemical messages (hormones or neurotransmitters) and they are often identical molecules. The endocrine system releases hormones into the bloodstream and they are carried everywhere. The nervous system stores neurotransmitters at nerve endings in synaptic vesicles and they are released at a very specific location. (You may want to read some basic information about each system.) Speed of action is an obvious answer, but it is not an acceptable answer. Neither is duration of action (both can cause long and short term effects). There is a more important difference in the action of the two systems. To answer the question, consider how each system would do some simple job normally done by the other system (it can be done). You can assume that any neurotransmitter could be a hormone (stored and released by an endocrine gland), and that any hormone could be a neurotransmitter (stored and released from synaptic vesicles).
State the rate of growth of population of bacteria? State the initial population at time t = 0 hours?
A test tube contains starch, pancreatic amylase, and water. The buriet is negative. After 30 minutes, Benedict's test is positive. What substance is present.
What will be appearance of the offspring of a cross of the F1 peaches back to that smooth,oval glanded parent. How several diploid Drosophila cells would be needed to have 1 picomole of each allele.
The cell walls of bacteria, fungi, and plant cells and the extracellular matrix of animal cells are all external to the plasma membrane. Which of the following is a characteristic of all of these extracellular structures.
If the experimental animals in a chamber were engaged in physical activity, how would this change the results of metabolism experiment.
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.
What is "Independent Assortment" of chromosomes? Who is associated with this theory? Throughout what phase of Meiosis I does it happen.
What fraction of demes in each set is likely to become fixed for allele A1 versus A2. Explain the differences in head movement available to fish.
If an animal needed to store energy for long-terms use, but not be encumbered with the weight of extra tissue, which is the best molecule for storage.
Birds and mammals have a four-chambered heart, with two ventricles and two atria, but other modern reptiles have a three-chambered heart, with just one ventricle. Paleontologists debate whether dinosaurs had a typical "reptile-like" heart or a "birdl..
Describe why you can predict that meiosis gives rise to genetic differences between parent's cells and daughter cells in fewer cell divisions than mitosis does.
Which of these situations would be most positive to the re-establishment of resident zoochlorellae, assume compatible Chlorella are present in P. bursaria's habitat.
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