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A cell membrane can be modeled as a thin, impermeable layer of thickness L, pierced by tiny holes of radius, r. The combined area of all of the holes amounts to a fraction, a of the total membrane area. Assume that.
Some small dissolved solute is held at a uniform concentration ceverywhere on one side of the membrane; initially, the other side has onlypure water.
The solute molecules are much smaller than r.a) Find the resulting initial flux of solute molecules across the membrane.b) Suppose that a =0.1%, c=0.1M, L=4 nm and r=1 nm. What is theflux?
Evaluate your answer in molecules per square micrometer persecond.
q1. in a research laboratory scientists want to record from single cells in a culture dish. they want to record action
Would this experiment work with other plant cells? What about animal cells? Why or why not?
Describe what is meant by "laminar flow" and "turbulent flow." Before you inflate the cuff, which term more closely describe the blood flow in the brachial artery? Explain.
According to the fluid-mosaic model of cell membranes, which of the following is a true statement about membrane proteins?
Arrange the genotype in the table, define the origin(parental, single cross-over progeny and double-crossover progeny) and determine the order of the genes on the chromosome.
Discuss the reasons why sexually-transmitted diseases are still a major threat despite our knowledge of how to prevent and treat them?
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In a 1973-74 situation comedy All in the Family, the character Archie Bunker says, Let me tell you something about beer, You can never buy beer, you can only rent it.
q1. two main cell groups make up the nervous system- neurons and connective tissue cells such as astrocytes and schwann
how should a community effectively organize to achieve improvement in community health? provide specific examples and
Juvenile hormone analogs can be sued as an effective pesticideof insect populations because it causes: The cephalopods the tentacles are modification from the:
In your own words. Discuss the importance ofbiodiversity in the plant kingdom. What are the threats tobiodiversity?
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