TLS Online TPP Program

#Question id: 2856


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

#Unit 2. Cellular Organization
  1. I-b, 2-III-c, 3-II-a

  2. II-c, 2-I-b, 3-III-a

  3. I-a, 2-II-b, 3-III-c

  4. II-b, 2-II-c, 3-III-a