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1. Cofilin is an actin binding protein that severs actin filaments. Katanin is an ATPase that binds to microtubules and severs them. In class, we discussed how acute activation of cofilin inside cells triggers a burst of actin polymerization off the newly created filament (+) ends. In contrast, activating katanin […]

1. Which part of the lac operon is cis-dominant? 2.Which proteins facilitate RNA polymerase binding at promoters? 3. Which protein complex directs DNA bending into loops that contact RNA polymerase and transcription factors bound at the core promoter or with protein complexes bound to proximal promoter elements? 4.Which protein complex […]

To be legally drunk in Florida is having a blood alachol level (BAL) of 0.08. For a 140 lb individual, this is approximately 3 drinks (=3 beers) within one hour. Blood alcohol level drops about 0.01 BAL every 45 minutes. How many drinks can a 100 lb individual drink within […]

Q1. When studying cell division in tissue samples, scientists often compute a mitotic index, which is the ratio of dividing cells to the total number of cells in the sample. Scientists frequently calculate mitotic index to evaluate the growth rates of different types of tissue. Which type of tissue would […]