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in the membrane of a human red blood cell, the ratio of the mass of proteins (average molecular weight: 50,000) to phospholipid (average molecular weight:800) to cholesterol (molecular weight: 382) is about 2:1:1. how many lipid molecules (phospholipid+ cholesterol) are there for every protein molecule?
DNA polymerase is also highly specific in that it can only synthesize new polynucleotide strands in the 5' to 3' direction-new strands must always run from 5' to 3'.
Describe the regulation of eukaryotic gene expression. Include what regions of DNA and what proteins are important and why? Include a discussion of post-transcriptional regulation.
Similarities and differences of Neanderthals, Cro-Magnons, and Homo Sapiens.
When collecting samples from a sulfur spring in Russia, you discover an organism with a single circular chromosome and lacking a nuclear membrane. What sort of organism are you certain that your organism CANNOT be?
A is recessive and confers a black coat, A is dominant to a and confers an agouti coat, and A Y is dominant to both and confers a yellow coat.
You are a neuroengineer interested in developing better nerve stimulators for prothetic limbs, such as arms, hands or legs. You want to understnad the flow of ions across the typical nerve cell membrane during action potentials, or spikes.
In explaining their findings, the authors have ignored a major threat to the validity of their estimates of exposure. Explain and discuss this error.
Receptor ligand interactions, the researcher wanted to narrow down exact region of binding between the receptor and the ligand.
Calculate the osmotic pressure, at 30°C, of 58.5 grams of NaCl in 1 liter of solution against pure water with a membrane that separates the pure water and salt solution and is impermeable to NaCl but permeable to water.
explain connection btw A & P within the human body; basically how do they influence one another?
What is the difference in H+ ion concentration between a solution that is pH 4 and a solution that is pH 5? Explain your reasoning.
Compare and contrast the amphibian and fish gastrulation.
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