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A microbiologist inoculates a growth medium with 200 bacterial cells/ml. If the generation time of the species is 1.5 hours. How many generations will it take for the culture to contain more than 6,000 cells/ml? How long, in hours, will it be before the culture contains more than 6,000 cells/ml? Show your calculations.
Ovules from a pure-breeding yellow plant are fertilized with pollen from a pure-breeding green plant. All of the progeny are yellow. When the reciprocal cross is performed, all of the progeny are green.
The intestinal stem cell sits exactly at position four in the crypt. What experiment was performed to find out it is the stem cell? At that position,
If humans and shrews shared the common ancestor roughly 80 million years ago, ignoring multiple substitutions at the same site, how several amino acid differences have to be expecting to see between a human and shrew Fibrinogen B sequence.
Jimmy, a new undergraduate researcher in the lab, is told to make a vector having a copy of the CELLBIO gene from Dr. Acosta's genome as well as a selectable gene, Ampr.
What are the four most important elements necessary for life on this planet? Name the four most important groups of organic molecules for life? Give an example of each.
If a population of algae-eaters experiences predation pressure from pike-cichlids which is the least likely to be observed in the algae-eater population over the course of many generations.
Critically illustrate out the cause, source and extent of diarrhetic shellfish poisoning, including an opinion on its occurrence and management in Canada and the USA.
In the procedure of carbon fixation, RuBP attaches CO2 molecule to produce a six carbon molecule, which is then split in two. After phosphorylation and reduction, what more needs to occur in the Calvin cycle.
Suppose that the proton motive force calculated for a bacterial cell is -187 mV. If the change in pH at 25 degrees Celsius is +0.1 (2.3RT/F or Z=59), Determine the membrane potential?
if an organism lacks the genetics to form even one enzyme in the Krebs cycle, what happens? or too much build uo, what would happen? How are these two situations different?
Discuss two of the non-covalent forces that stabilize tertiary structure in proteins that are affected when the pH is changed.
The fruit in summer squash may have different shapes. When 2-true breeding plants with disc-shaped fruit were crossed to true breeding plants with long fruit,
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