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Many scientists were reluctant to accept the results of Avery, MacLeod, and McCarty's experiments showing that DNA (rather than protein) was the transforming principle. Why? Consider any experimental weaknesses in their approach as well as any conceptual problems with DNA as a molecule for information transmission.
The difference among the three categories of cytoskeletal elements would suggest that each of has specialized roles. Which is an accurate match.
Describe why we have a cool dry winter and a warm wet summer in florida? Human population on earth has exhibited logistic growth. Why might this not continue?
Carbon fixation requires the expenditure of ATP molecules which is generated by A. formation of glucose during the Calvin cycle B. replenishment of chlorophyll C. ETS.
Suppose that the field of view is at 400x total magnification is 0.26mm. Determine the height of onion cells pictured below from and image observed at 400x.
To be able to properly analyze a sample of DNA, you need to have at least 1 ug of the DNA of interest. Assumptions: PCR is run with 30 cycles; Molecular weight of nucleotide = 330 g per mole for a single stranded DNA.
A bar graph is used instead of a line graph because every type of liver cell was independent of the others. Determine what variable did researchers intentionally vary in experiment, and what are the units for this variable?
Suppose that a light-sensitive cell in the eye of a particular invertebrate. The cell membrane contains cGMP-gated K+ channels.
Consider a mitochondrion with a pH in the matrix = 8 and the pH of the intermembrane space = 5.9. The matrix is 100 mV more negative than the IMS or cytoplasm.
Assume you are purifying a protein on a weak cation exchanger and it comes off at 300mM salt. predict what salt concentraiton the protein would come off if you used a strong cation exchanger.
O2, CO2, Sugars, Vitamins Na+, K+, H2O are all molecules that need to be constantly entering and exiting the cell. Which of these molecules will be able to passively diffuse across the plasma membrane and why? Of the remaining molecules why cant t..
Knowing the length that DNA traveled on an agarose gel after electrophoresis, how do I determine the length of the unknown DNA fragment which traveled (19mm) on the gel.
A dog homozygous for both dominant traits is mated to a droopy-eared silent follower. The expected phenotypic ratio and genotypic ratio in the F-1 generation.
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