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1. This method can be used to sterilize a liquid media without harmingheat labile ingredients.a. autoclavingb. pasteurizationc. freezingd. cold filtratione. addition of ethylene oxide to the media.
2. The cell density of population of microbes expands six-thousandfold. approximately how many times did the population double?a. 9b. 10c. 12d. 14e. 16
Action potentials are usually generated at axon hillock and propagated down axon away from the cell body. If you experimentally depolarized an axon to the threshold level at a point halfway down the axon, what would happen.
q. scientists consider that photosynthesizing organisms originated in water. before the earth had an atmosphere water
Which of the following is nota major function of the plasma proteins in the blood. What intertidal area has the largest numbers of species and individuals? Explain why.
Why does the loop of henle have the long narrow shape? Some desert-adapted animals produce a very concentrated urine. How are their kidney different?
List the major functions of the large intestine, and describe the regulation of defecation and the role of fiber in the diet?
At 37C, if the plasma pH is 7.4 and the plasma concentration of HCO3 is 15 mM, what is the plasma concentration of H2CO3? What is the plasma concentration of dissolved CO2?
Enzymes that bind reaction transition states with greater affinity than substrates or products:
How did the zoological research of the comparative anatomist J.Z. Young in the 1930's along with the Donnan effect and the Nernst and Goldman equations pave the way for the electrophysiological discoveries of Hodgkin and Huxley relating to voltage..
Two species of garter snakes live in the same geographic area. One generally lives in water and the other mainly on land, so that they rarely encounter each other and do not interbreed. This is an example of what category of genetic isolation.
Supposethey added the enzyme to a solution of 90%CTP and 10%UTP, and then used a cell-free system of protein synthesis to make peptidesaccording to the sequences in their synthetic RNAs
why doesn't making energy by photosynthesis completely solve the problem caused by glucose depletion?
In the absence of oxygen, cells consume glucose at a high, steady rate. When oxygen is added, glucose consumption drops precipitously and is then maintained at the lower rate. Why is glucose consumed at a high rate in the absence of oxygen and at ..
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