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List three viral genera that contain circular, ss DNA indicate the family it belongs to, and one host for each.
What would the CsCl gradient pattern from the Meselson-Stahl experiment look like if replication were fully conservative, that is, if a parental strand gave rise to one daughter with all original DNA and a second daughter with all new DNA?
When mammals eat food that contains protein, the protein is broken down to amino acids and the amino acids travel from the lumen of the small intestine to a blood vessel.
A 5.0 mL aliquot of a stock tryptophan solution was diluted by adding 95 mL of water. The absorbance of that diluted solution was measured at 280 nm as 0.055 absorbance units.
What are two benefits of microbes? write a complete sentence or two for each venefit. include a description of why microbes are beneficial for each.
A deficiency of carnitine results in muscle cramps, which are increased through exercise or fasting. ATP is required for muscle contraction.
When an experiment is repeated with a protein medium, yeasts grow only in the presence of oxygen. Pasteur concluded that the yeasts can take oxygen from air, and in the absence of air, the yeasts take oxygen from sugar.
the original concentration in a sample is 2.79*10^6 CFU/ml. which sample volume should yield a countable plate? (express your answer as 10^x mL.)
A semipermeable membrane separates two aqueous solutions at thirty degrees C. For each of the following cases, name the solution into which a net flow of water.
What was the mutational event that gave rise to the frameshift mutant? Determine precisely where the single nucleotide insertion or deletion occurred in the b-lactamase coding sequences.
Over the long period of time that life has existed on Earth, there have been a number of important or significant innovations including (but not limited to) endosymbiosis to create mitochondria and chloroplasts.
Explain what is meant by state the genetic code is triplet and nonoverlapping? What did the finding that DNA base compositions varied greatly among different organisms suggest about the genetic code.
In cats, coat color is an X-linked trait where a black coat is determined by the XB allele and a yellow coat by the Xb allele. Black and yellow are co-dominant and a heterozygote has a tortoiseshell coat.
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