An E.coli cell acquires a mutation in the lacI gene that results in permanent repression of the lac operon. Which of these would characterize such a mutant?
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REQUIRED- You will want to draw the Lewis structure of CS2 o…
REQUIRED- You will want to draw the Lewis structure of CS2 on your scrap paper before beginning. From the Lewis structure of CS2 answer the following: A. Describe the Lewis structure of the molecule and determine what the molecular geometry (name the shape) of the molecule would be? Bonus- B. Would CS2 be a polar or non-polar molecule?
Calculate the pH of the following solutions of strong acid o…
Calculate the pH of the following solutions of strong acid or strong base: 0.0085 M HCl
Determine the chemical formula if the following combined to…
Determine the chemical formula if the following combined to form an ioniccompound- if the ions are not written- you must first determine what charges the atoms become when they become an ion- then determine the correct ratio of cation to anion- where electroneutrality will exist. Al3+ and PO43- Be sure to use the subscript and superscript feature to correctly express the formula in the correct format.
Which of the following regulatory elements is NOT a sequence…
Which of the following regulatory elements is NOT a sequence of DNA?
Which amino acid would be attached to the tRNA molecule show…
Which amino acid would be attached to the tRNA molecule shown below?
A researcher is studying the effects of increasing the amoun…
A researcher is studying the effects of increasing the amount of acetylation of histone tails in a culture of human cells. Which of the following results would she most likely see?
Calculate the average atomic weight from the following natur…
Calculate the average atomic weight from the following natural abundance data: Atomic Symbol Atomic Mass (amu) Percent Abundance (%) Report your answer in amu, to 2 decimal places.
If the amount of O2 given in question 1 reacts with your giv…
If the amount of O2 given in question 1 reacts with your given amount of Na in question 2, which is the limiting reactant AND what is the maximum amount (in grams) of Na2O that can be produced? Why? *You can also use this space to explain how you did question 1 and 2 for partial credit.
Required- Explain how you did the problem above. Be sure to…
Required- Explain how you did the problem above. Be sure to either show all of your math or explain each conversion step you did in words.