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Your friend, who is an engineering major, is interested in the mechanical properties of extracellular matrix and wants to study how secreted collagen molecules assemble into a collagen fiber. As part of his studies, he has been trying to speed up the rate at which cells can produce the collagen protein and is considering reducing the size of the propeptide that is attached to the collagen chain such that it contains only the ER targeting sequence as well as the site for cleavage of the propeptide. To his surprise, this modification causes collagen to be degraded inside the cell. Can you explain why?
According to our current knowledge of plant evolution, which group of organisms should feature mitosis most similar to that of land plants.
q1. how various molecules of glucose c6h2o6 molecular mass 180 daltons would be present in one litre of a 1m molar
Explain a specific example of a cross in two parents, each homozygous for different traits, which would result in a phenotype that is distinct from either parental phenotype.
Why there are multiple origins of replication on eukaryotic DNA? a. To establish multiple copies of DNA simultaneously. b None of these is correct. c. To minimize errors in DNA replication. d. To reduce the time necessary for DNA replication
Suppose that you did observations of Gram stained bacteria at TM 400x and TM 1000x. Which set of observations most closely matched the expected results for cell morphology.
Movement of chloride ions across the cell membrane from the the outside of nerve cells to the inside has a delta-G of about 1.1 kcal/mol even in the presence of a gradient. Why is the gradient alone not enough to get the ions into the cell? (Think..
Oxygen is the final electron acceptor of this pathway. Glycolysis is the only energy yielding step of this pathway.
Cystic fibrosis (CF) is a recessive trait that causes a fatal lung disorder, with symptoms beginning in early childhood. A healthy woman whose brother has CF marries a healthy man who has a sister with CF. What is the probability that their first ..
Both parents have normal color vision. Where did the nondisjunction occur that gave rise to the young man with klinefelter syndrome?
What approach would use to isolate only cells. For each of the SLP assignments, you will be provided with a hypothetical experimental scenario or data. These assignments are more opened-ended than the case assignments.
Alleles a, b and c are recessive. Females heterozygous for the 3-loci are crossed to phenotypically a b c males. The progeny are phenotypically.
Compare lake and ocean ecosystems in terms of nutrient cycling, physical structure, and primary production. Explain which system you expect consumers to play a larger role in controlling primary production.
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