#Question id: 149
#Unit 1. Molecules and their Interaction Relevant to Biology
The pKaʹs of the side chain group and the α-carboxyl group of glutamate are 4.1 and 2.1, respectively. Which statement accounts for this difference?
#Question id: 28212
#Unit 5. Developmental Biology
Activin is a___
#Question id: 6965
#Unit 5. Developmental Biology
what type of cleavage is used in frog embryos?
#Question id: 4354
#Unit 3. Fundamental Processes
Which of the following statements correctly describes the primary difference between enhancers and proximal control elements?
#Question id: 1232
#Unit 1. Molecules and their Interaction Relevant to Biology
Which of the following mutations might confer a competitive advantage to an athlete by raising his or her hematocrit?
a. excess production of erythropoietin
b. decreased production of erythropoietin
c. EpoR that cannot bind STAT5
d. EpoR that cannot bind SHP1
e. EpoR that cannot bind JAK2