#Question id: 26973
#Unit 10. Ecological Principles
#Question id: 2856
#Unit 2. Cellular Organization
Match the lac genes with their enzymes & functions;
|
lac genes |
Enzyme |
Functions |
|
lacZ |
b-galactosidase |
which rids the cell of toxic thiogalactosides that also get transported in by lacY. |
|
lacY |
thiogalactoside transacetylase |
which cleaves the sugar lactose into galactose and glucose, both of which are used by the cell as energy sources |
|
lacA |
lactose permease |
a protein that inserts into the cell membrane and transports lactose into the cell |
#Question id: 33418
#Unit 1. Molecules and their Interaction Relevant to Biology
#Question id: 3349
#Unit 11. Evolution and Behavior
Which of these evolutionary agents is most consistent at causing populations to become better suited to their environments over the course of generations?
#Question id: 1812
#Unit 4. Cell Communication and Cell Signaling
What is the percentage of γδ T-cells bearing Vγ9, Vδ2 T-cell receptors in human adult peripheral blood?