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Which of the following bases is NOT found in RNA?

A solid ball of mass = [m] kg rolls without slipping down a ramp of height = [h] m, as pictured. At the bottom of the ramp, it rolls onto a frictionless table. It then has a perfectly elastic collision with a mass = [N] kg on a spring with spring constant = [k] N/m. (Q17 ans 2 pts, Q18 work 5 pts) What is the translational speed of the ball at the bottom of the ramp? (Q19, 7 pts) What is the velocity (speed and direction) of the ball directly after the collision. Velocities to the right will be positive. (Q20, 7 pts) What is the maximum compression of the spring after the collision? To continue, please give the translational speed of the ball at the bottom of the ramp (part a) in units of m/s.

 (7 pts) Part e on Question 21.

A rod of length

We land on a new Earth-like planet that happens to have the same radius as the Earth. On this new planet, we take a cube that is 10 cm on a side ( = 1.00×10-3 m3), suspended it from a light string, and submerge it in a fluid of density

Estimate the melting temperature (Tm) of a double-stranded DNA molecule based on the melting curve shown below. Enter a whole number without a unit (i.e. NO decimal points)!

The double helix of DNA is which level of structure?

From the following list of options, select the correct base, so that “deoxyuridine-5′-monophosphate” is the proper chemical name for the following nucleotide:

What distinguishes nucleotides from nucleosides?

Which of the following nucleobases is a purine? Multiple answers are possible!