Which statements are true about group I and group II introns,

A. Group I (and II) introns are not enzymes because they have a turnover number of only 1.

B. A third transesterification reaction can occur to cyclize the intron.

C. They cannot be readily converted into ribozymes.

D. It is similar to the way that the self-cleaving Hammerhead could be converted to a ribozyme by separating the active site from the substrate

#Question id: 23025

#Unit 12. Applied Biology

#Question id: 2040

#Unit 4. Cell Communication and Cell Signaling

The role of complement in rapid response to a first exposure to a variety of organisms involves which of the following?

#Question id: 28563

#Unit 5. Developmental Biology

A 7 TM domains protein which is embedded in the nuclear membrane of prestalk cells known as___

#Question id: 11572

#Unit 7. System Physiology – Animal

When a person drinks alcohol, the rate of urination increases. Which of the following best accounts for the increase in urination above normal rates?

#Question id: 5284

#Unit 8. Inheritance Biology

DNA from a strain of Bacillus subtilis with genotype a+b+ c+d+ e+ is used to transform a strain with genotype a - b- c- d-   e-. Pairs of genes are checked for co-transformation and the following results are obtained:

Pair of co-transform genes as follow

D-E,             E-C,                C-B,                  A-D

On the basis of these results, what is the order of the genes on the bacterial chromosome?