DNA and RNA single strand molecule

1. RNA is single-stranded

2. Parts of the same RNA can fold back on themselve

3. If the bases match (A–U, C–G), they can base-pair

4. This creates shapes like hairpins or loops

5. Even short segments of RNA that are complementary can pair with each other within a single strand.
6. RNA is single-stranded
7. Parts of the same strand can be complementary
8. These parts base-pair (A–U, C–G) with each other
9. This causes the RNA to fold into shapes like hairpins and loops
   
   
   

 

Question: 27 of 44

• Time Remaining: 07:30:13

Which of the following statements best explains why RNA inside a cell is almost never found as a single-stranded molecule?

Alleles for genes are found in pairs, so their RNAs also pair up.

RNA normally exists with its complementary strand in a double helix.

RNA and DNA form hybrid pairs for all transcribing parts of the chromosome.

Short stretches of complementary sequences can cause RNA to fold back on itself.