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In England in the 1700s, Edward Jenner injected a child with a smallpox vaccine that had not yet been tested. After some time had passed, he injected the same child with a living smallpox virus. How do you think Jenner's experimental method differs from the way new vaccines are currently tested? What are the ethical implications of Jenner's method?
A new dominant mutation occurs in a population of red-winged blackbirds that triples the size of the red shoulder patch in males. Individuals expressing the new mutation are far more conspicuous to predators and this causes their survival to be re..
Discuss and define motor unit and describe how motor units function in recruitment and in maintaining muscle tone. Explain the different types of skeletal muscle fibers.
Which organelle has the best structure to carry out cellular respiration? Mitochondria or Choloplasts?
Once concept of evolution has been based on the idea that a new kind of organism would emerge by a sudden, large mutation in an individual.
Place the following characters on a phylogeny of fungi (with animals as an outgroup), Flagella, Multicellularity, Non-motile sperm, Arbuscular mycorrhizae, Macroscopic reproductive structures.
Plants lacking this enzyme grow slowly and are often light green or white in colour. Provide explanations with support for both these plants' slow growth rates and light-green or white appearance.
Explain the arrangement within energy levels of the six electrons of an atom of carbon and discuss the relationship between elements and atoms?
a+, b+, c+ and d+ are independently assorting Mendelian genes controlling the production of a black pigment. The alternate alleles that give abnormal functioning of these genes are a, b, c, and d.
A 20 µL diluted sample (1:15) of protein was added to 2 ml of Bradford reaction assay tube. The absorbance at 595 was 0.75 and according to a BSA standard curve corresponding to 0.025 mg protein on the x-axis. What is the protein concentration (mg..
Why can't a monomeric receptor tyrosine kinase recruit proteins to the receptor? What would happen if the GTP-ASE protein(GAP) were inhibited?what is The most abundant class of enzyme.
2-types of signals have been implicated in metaphase checkpoint arrest. Think about the results of a recent experiment in which the unattached kinetochore of a monoattached chromosome was destroyed by a laser beam.
A lab is working on drugs that disrupt cell division and have created drugs that inhibit DNA replication in tumor cells. You, being a curious grad student want to test each drug and figure out which DNA replication enzyme it targets.
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