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BCH4024 F2024 OC E4 Q11: Which of the following best describes why telomeres shorten after every round of DNA replication in somatic cells? 

What is the lyotropic series for cations and its significance?  What mechanisms (theory), ion and solid characteristics and other factors explain the order of ions in the series?  Under what conditions can the relative position of ions in the series be altered?

What is the strongest bone in the human body?

Use L’Hospital’s Rule to evaluate the limit. lim x → e 17 ln x – 17 x – e Give an exact answer in terms of e .

BCH4024 F2024 OC E4 Q10: Dr. Cosima Niehaus studies DNA replication in eukaryotic yeast cells. She discovers that when she treats yeast cells with Compound LEDA, the cells could not progress from G1 to S phase. It turns out that Compound LEDA prevented proteins from locating DNA sites to initiate the process of “licensing.” Compound LEDA MOST likely blocks the action of __________.

  In comparing these activity budgets, which activity in free-range organisms decreased the most in the stabled organisms most likely leading to boredom (“nothing to do”) for the stabled organisms?    

Soils frequently contain large amounts of both iron and aluminum, and the solubility of common solid phases (oxides, hydroxyoxides) of both element vary strongly.  Despite these similarities, “the chemistry of — and concerns about — acid soils is said to be essentially the chemistry of Al”, not Al and Fe; why?

A spherical balloon is inflated with gas at the rate of 200 cubic centimeters per minute. To the nearest tenth of a cm/min, how fast is the radius of the balloon increasing at the instant the radius is 4 centimeters? Hint: V = 4 3 πr 3

Compute the derivative of the function. cot-1(x2+7)

Identify the intervals on which the following function is concave up and concave down. f ( x ) = x 4 – 4 x 3 – 18 x 2 + 9 x – 5