#Question id: 634
#Unit 1. Molecules and their Interaction Relevant to Biology
An enzyme has a Vmax of 50 micromol product formed (minute x mg protein)-1 and a Km of 10 microM for the substrate. When a reaction mixture contains the enzyme and 5 microM substrate, which of the following percentages of the maximum velocity will be closest to the initial reaction rate?
#Question id: 7029
#Unit 5. Developmental Biology
During chondrogenesis, the number of “bones” in each region of the limb correlates with the concentration of _____ over developmental time :
#Question id: 1552
#Unit 4. Cell Communication and Cell Signaling
A common clinical pathological finding during a viral infection is
#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: 537
#Unit 1. Molecules and their Interaction Relevant to Biology
Substrate level phosphorylation
A) describes the conversion of ADP into ATP with the addition of inorganic phosphate every place throughout the cell.
B) describes the formation of ADP by phosphoryl group transfer from 1,3 bisphosphoglycerate.
C) is the formation of ATP by phosphoryl group transfer from a higher energy compound.