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For fusion of a vesicle with it's target membrane to occur. The membranes have to be brought to within 1.5 nm so the two bilayers can join. Assuming that the relevant portion of the two membranes at the fusion site are circular regions 1.5 nm in diameter, calculate the number of water molecules that would remain between the two membranes ( water is 55.5 m and the volume of a cylinder is πr^2h). Given that an average phosphlpid occupies a membrane surface of 0.2nm^2, how many phospholipids would be present in each f the opposng monolayers at the fusion site? Are there sufficent water molecules to associate with the hydrophillic head groups of this number of phospholipids (10 phospholipids associate with each headgroup)?
Name the conditions revealed by the X-ray and explain how they could have resulted from the nurse's procedure.
Explain physiological changes that occur in three different organ systems when food is ingested and how these systems coordinated a response in the human body.
When such a drug is added, what will occur to ATP synthesis and oxygen consumption, if rates of glycolysis and the citric acid cycle stay the similar.
Case Study: A female patient in ER with suspected toxic shock syndrome
In mountain rabbits, the EL-1 gene is located on chromosome three. 7-alleles of this gene have been identified in the population. With respect to EL-1,
Assume that you measure the OD of two E.coli cultures: culture A and culture B. The spectrophotometer gives you a reading of 3.2 for culture A and 0.01 for culture B. What would you do to determine the concentration of culture A and B and why? Giv..
A transmembrane protein in outer membrane of the nuclear envelope would least likely be found later in which one of the following cellular locations?
The process by which organisms acquire DNA from different species is most accurately referred to as.
Mean segment weights expressed as percentages of total body mass Total Leg: 18.43 Thigh: 11.75 Leg: 5.35 Foot: 1.33 Leg and Foot: 6.68
Some human pathogenic bacteria are resistant to most antibiotics. How would you prove a bacterium is resistant to antibiotics using laboratory culture techniques?
Large folds in the stomach known ______ increase its surface area and also enable it to fold on itself when empty. The ______ is a valve that enables partially digested food out of stomach into the ______.
The onion plant began as a single cell. That cell had X number of chromosomes. (the exact number does not matter, we will just call that number X). How many chromosomes are in each of the cells that you observed? (give the answer in terms of X). H..
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