Eukaryotic mRNA molecules may contain non-coding sequences that must be removed before translation. These are called  

A.  anticodons.
B.  introns.
C.  exons.
D.  nucleosomes.
E.  noncodons.


B.  introns.

Biology & Microbiology

You might also like to view...

Which of the following changes take place as the muscle contracts?

A) The Z lines get closer together. B) The H zones get smaller. C) The I band gets smaller. D) The A band gets smaller. E) A, B, and C are correct.

Biology & Microbiology

Human cells that have completed telophase I will each contain ________ chromosomes, which will be in a(n) ________ form

A) 46; replicated B) 23; replicated C) 23; unreplicated D) 46; unreplicated

Biology & Microbiology

When one microbe's metabolic activities create favorable conditions for another microorganism, this is referred to as (competition/cooperation/facilitation)

What will be an ideal response?

Biology & Microbiology

A disease of birds that can be transmitted to humans is (campylobacteriosis/Lyme/ornithosis).

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology