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Ima Anxious was hysterical and hyperventilating, so a doctor made her breathe into a paper bag. An especially astute student said to the doctor, "When Ima was hyperventilating, she was reducing blood carbon dioxide levels; when she breathed into the paper bag, carbon dioxide was trapped in the bag, and she was rebreathing it, thus causing blood carbon dioxide levels to increase. As Ima's blood carbon dioxide levels increased, her urge to breathe should have increased. Instead, she began to breathe more slowly. Please explain." How do you think the doctor responded? ( Hint: Recall that the effect of decreased blood carbon dioxide on the vasomotor center results in vasodilation and a sudden decrease in blood pressure.)
Develop two degenerate primer sequences that will amplify the entire Open reading frame of the corresponding gene in a PCR reaction.
compute how many molecules X and Y the cell contains at any time. Which molecule would be preferred for rapid signaling? Why?
Explain why cutting an arterial vessel will cause a greater loss of blood over the same amount of time than cutting a venous vessel.
Succinylcholine binds to the ACh receptors at the motor end plate. Explain the mechanism by which it could produce muscle relaxation and why muscle twitches could occur after the administration of succinylcholine. Muscle twitches could occur after..
Mutational changes were induced in a single codon in the gene of T4 phage. The following amino acid substitutions were observed. By following the base changes in the codons, determine the codon for each mutant.
Components of the endomembrane system can become bigger as demands on their function increase. Identify which parts of endomembrane system would be bigger in
Theoretically, plants could increase or decrease the size of individual stomata and still achieve the same result as varying the number of stomata. But they dont do this- plants only vary stomata number, not size. Why?
1 to what kingdom would a single-celled nucleated photosynthetic organism belong? 2 what clues indicate that dogs are
Calculate the physiological standard free energy change for the combined reactions in glycolysis converting 1,3-bisphosphoglycerate to pyruvate.
The value of DNA per cell of particular species is measured in cells found at various stages of meiosis and the cell cycle, and the amounts are obtained.
name the factors that limit our ability to classify and understand microbial diversity and what implications do these
q. select one animal species. your goal is to explain the way in which an evolutionary change might occur for a
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