Author Question: You are once again in a hot, dense place. You are surrounded by protons and neutrons, some rapidly ... (Read 12 times)

Mollykgkg · **on:** Jul 27, 2018

You are once again in a hot, dense place. You are surrounded by protons and neutrons, some rapidly fusing into helium. You notice that your surroundings are cooling (good, because it's really hot) and rapidly dropping in density.

Within about 3 minutes, the fusion reactions stop. Where are you? A) You are in the center of a star very much like our Sun.
B) You are in the early universe during the era of nucleosynthesis.
C) You are inside a nuclear power plant on Earth.
D) You are in the center of a star much smaller than the Sun.
E) You are in the center of a massive star near the end of its life.

Question 2

Of the many possible nucleotides, the DNA used in living organisms on Earth uses how many?

A) 20
B) 4
C) 5
D) 23