An RNA molecule (for example, rRNA or tRNA) within a cell can fold into complex three-dimensional shapes for which reason?

a. It contains the base uracil rather than thymine.
b. It contains the sugar ribose rather than deoxyribose.
c. It is double-stranded.
d. It is more primitive than DNA.
c. It is single-stranded.


Ans: c. It is single-stranded.

Biology & Microbiology

You might also like to view...

You wish to determine the cellular location of a protein but unfortunately it is not particularly antigenic (i.e., it can't develop a strong antibody response). How could you solve this problem?

A. Create a fusion protein with an epitope tag that can be visualized by incubation with fluorescently tagged antibody to the epitope. B. Create a fusion protein with an epitope tag that is fluorescent without the addition of antibodies. C. Create a fusion with green fluorescent protein (GFP). The fusion protein will fluoresce when streptavidin is added. D. Express the protein as a fusion with biotin. The addition of GFP will cause fluorescence. E. None of these methods will work.

Biology & Microbiology

In the process of transcription, incoming RNA nucleotides are in their triphosphates form

__________________ Indicate whether the statement is true or false.

Biology & Microbiology

The motivational state that terminates a meal when there is food remaining

What will be an ideal response?

Biology & Microbiology

T or F: lifting free weights is a form of isotonic exercise

What will be an ideal response?

Biology & Microbiology