Out of the following what usually supports the fastest growth rate and is therefore considered the preferred nitrogen source for E. coli

#Question id: 7235

#Unit 5. Developmental Biology

Following statements are regarding to the wingless gene in drosophila.

A. In the cells transcribing the wingless gene, wingless mRNA is translocated by its 3’UTR to the apex of the cell. At the apex, the wingless message is translated and secreted from the cell.

B. The cells expressing engrailed can bind this protein because they contain Patched, which is the Drosophila membrane receptor protein for Wingless.

C. Binding of Wingless to Frizzled activates the hedgehog signal transduction pathway, resulting in the continued expression of engrailed.

D. Wingless protein also acts in an autocrine fashion, maintaining its own expression.

Which of the following combinations is correct?

#Question id: 2683

#Unit 2. Cellular Organization

An inverted repeat is best described as:

#Question id: 5786

#Unit 8. Inheritance Biology

A mutation causing an abnormality in presenilin that disrupts amyloid production or function has been associated with

#Question id: 27121

#Unit 4. Cell Communication and Cell Signaling

#Question id: 24623

#Unit 2. Cellular Organization