A.) Something you are taught or learned through experience
Answer:
E-A-B-C-D
Explanation:
The steps involved in the process of bacterial transformation in the correct order are;
E. Donor cell lyses, releasing pieces of its chromosome into the environment.
A. Donor cell DNA binds to a receptor site on the recipient cell.
B. One strand of the donor cell DNA is degraded.
C. Transformed DNA pairs with homologous region on the recipient cell chromosome.
D. Transformed DNA recombines with the recipient cell chromosome.
<span>The correct answer is D, multiple fission. During this process, the nucleus divides many times y mitosis. This is followed by the separation of cytoplasm, and this creates several daughter cells. The process occurs in many protists.</span>
Answer:
Please find the detailed explanation of this statement below
Explanation:
Firstly, a repressed gene is a gene whose expression has been inhibited or repressed. The lac operon in E.coli bacteria is a regulatory unit containing structural genes, a single promoter and operator regions. The promoter is the region where the transcription enzyme (RNA polymerase) binds to in order to transcribe the genes in the lac operon. The structural genes in the lac operon can only be expressed in the presence of lactose sugar.
However, in the absence of lactose, LAC REPRESSOR, which is a transcription factor (protein), prevents the binding of RNA polymerase to the PROMOTER region by binding to the OPERATOR region of the lac operon. This inhibits the expression of the lactose genes in the operon.
Note that, the structural genes in the lac operon (lacZ, lacY, lacA) code for proteins that help break down lactose sugar for energy in the E.coli bacteria. Therefore, a bacteria cell with a repressed lac operon will be unable to degrade lactose sugar.
