Allolactose, an isomer of lactose, is formed in small amounts from lactose. an e. coli cell is presented for the first time with the sugar lactose (containing allolactose) as a potential food source. which of the following occurs when lactose enters the cell? allolactose, an isomer of lactose, is formed in small amounts from lactose. an e. coli cell is presented for the first time with the sugar lactose (containing allolactose) as a potential food source.
which of the following occurs when lactose enters the cell?

a. allolactose binds to the regulator gene.
b. allolactose binds to the repressor protein.
c. rna polymerase attaches to the regulator.
d. the repressor protein attaches to the regulator.
e. the repressor protein and allolactose bind to rna polymerase.

Many kangaroo rats live in the sonoran desert of the southwestern united states. they have a variety of adaptations for living in the desert. under which circumstance would the kangaroo rats of the sonoran desert be most likely to develop new adaptations by natural selection?

Complete the sentences by matching the names of trees to the appropriate blanks. to do this, drag the names on the left into the appropriate blanks in the sentences on the right. match the words in the left column to the appropriate blanks in the sentences on the right. terms may be used more than once. make certain you have filled every blank with a term before clicking submit. 1. deciduous trees lose their leaves seasonally and include trees such as maple and elm. 2. conifer leaves are generally thin and needle-like, while seeds are contained in cones. conifers include cedar and pine. 3. evergreens are plants that maintain their leaves in all seasons and include trees such as cedar, elm, and pine. 4. hardwoods reproduce using flowers and have broad leaves; hardwoods include trees such as maple, , and cedar. elm returned you filled in 2 of 10 blanks incorrectly. mango trees are tropical broad leaf plants that maintain their leaves all year long. no credit lost. try again.

Why is a mushroom considered a heterotroph