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Two Questions: What, if anything, is wrong with the following statement: "When NaCl is dissolved in water, the water molecules closest to the ions will tend to orient themselves so that their oxygen atoms point toward the sodium ions and away from the chloride ions."
The drug thalidomide was once prescribed as a sedative to help with nausea during the early stages of pregnancy. One of its optical isomers, (R)-thalidomide, is the active agent responsible for its sedative effects. It was synthesized, however, as a mixture of both optical isomers - a not uncommon practice that usually causes no problems. Unfortunately, the other optical isomer is a teratogen that led to a horrific series of birth defects characterized by malformed or absent limbs. On the structural formula in panel A, identify the carbon that is responsible for its optical activity (its chiral center) and sketch the structure of the teratogenic form of thalidomide.
The Vm outside the cell is 0, the Vm inside the cell is 40 mV. If the outside concentration of Mg+2 is 30 mM, and the internal concentration of Mg+2 is 3mM, what direction will Mg+2 ions move if a Mg+2 ion channel is opened?
Compare the sympathetic and parasympathetic nervous system in terms of structure, physiology, and chemical transmitters released.
The drug Nifedipine is identify in this chapter as a membrane calcium ion channel blocker, and it is used to relax the walls of blood vessels.
What is an example of energy coupling starting with Glucose as the reactant? And what is an example of energy coupling starting with ATP as well?
What is the largest chamber? Is the cavity larger or are the walls of the chamber larger or both? How does this structure relate to the function of this chamber?
A species of fern has a diploid number of chromosomes equal to18. How many chromosomes would you expect to find in a spore? In azygote? In a cell from a leaf? What would you expect if the specieswas a moss?
Expect cancer to arise more often in types of cells-Would you expect cancer to arise more often in types of cells that divide frequently (such as skin cells) or in types of cells that divide rarely or not at all (such as nerve cells
One process that is considered very important to the health of coral reef ecosystems (and that may be currently under stress) is their connectedness to surrounding systems.
Need assistance with homework. It is just a discussion, there is no limit for words and it would be great to have one resource for each question. Please Answer in your own words.
to increase the awareness of monitoring and recording the blood pressure of patientsto practice measuring blood
What is an ectopic pregnancy? Where does implantation of the fertilized egg usually occur? Where does the remainder of ectopic pregnancies occur? What are the treatment options for ectopic pregnancies
Smilin is a protein that causes people to be happy. It is inactive in many chronically unhappy people. The mRNA isolated from a number of different unhappy persons in the same family was found to lack an internal stretch.
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