#Question id: 4089
#Unit 3. Fundamental Processes
An investigator incubates an unprocessed RNA molecule containing an intron in an extract absent of any protein. Correct splicing of the RNA is observed, but only when guanosine is present. What can the investigator conclude about the RNA molecule?
a. It contains a ribozyme.
b. Self-splicing has occurred.
c. It contains a group II intron.
d. It contains a group I intron.
#Question id: 32220
#Unit 2. Cellular Organization
#Question id: 9223
#Unit 9. Diversity of Life Forms
Managing southeastern forests specifically for the red-cockaded woodpecker ________.
#Question id: 1155
#Unit 4. Cell Communication and Cell Signaling
The activity of beta-adrenergic receptors is regulated by:
#Question id: 5565
#Unit 5. Developmental Biology
Among these choices, the largest cell involved in frog reproduction is ________.