Which of the following is correct about the polyadenylation mechanism?
a: a long chain of adenine nucleotides is added to the 3' end of mrna during terminationof transcription
b: a long chain of uracil nucleotides is added to the 3' end of mrna during terminationof translation
c: a long chain of guanine nucleotides is added to the 3' end of mrna during termination of translation

Compare and contrast nutrient limitation in soil vs. nutrient limitation in aquatic ecosystems

What is the difference between a meteoroid and a meteor?

When does a spring tide occur? question 9 options: they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur twice a year in the spring and fall. they occur on the date of the vernal equinox each year, no matter what stage the moon is in. this is why they are called spring tides. they occur when the sun, moon, and earth are at 45-degree angles from each other. this happens once every spring. they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur all year long.