3. Complete the following table that compares rRNA to mRNA
rRNA
mRNA
Role in/part of... Made in... Travels to...
4. Briefly describe the relationship between the nucleus and ribosomes. Your answer should include the following key terms: mRNA, rRNA, and protein synthesis.
5. The nuclear envelope has passages for substances moving into and out of the nucleus. These passages are called nuclear pores, and they are made by proteins that are inserted into the plasma membrane that makes up the nuclear envelope. These proteins are assembled by which of the following?
a. Free ribosomes
b. The nucleus
c. Bound ribosomes
d. Nuclear pores
6. You are an evolutionary biologist working for the Smithsonian. On a fossil dig in the Eastern Montana Badlands, you discover fossil evidence that shows early eukaryotic cells containing only free ribosomes. Briefly state what conclusion(s) could be drawn from this evidence.