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.
Answer:
According to Lamarck, organisms altered their behavior in response to environmental change. ... Their changed behavior, in turn, modified their organs, and their offspring inherited those "improved" structures.
Answer:
Thermal and radiant
Explanation:
Thermal energy is energy in the form of heat (such as fire). Light energy is a form of radiant energy. When a match is struck it creates fire which creates heat (thermal energy) and light (radiant energy) so the two types of energy that the match is transformed into are thermal and radiant.
Answer:
KINETIC ENERGY: A BOX MOVING ALONG.......
ELECTRICAL....: LIGHTNING PRODUCED ....
GRAVITATIONAL..... A PIECE OF FRUIT HANGING.....
RADIANT.... RADIO WAVES TRANSMITTED....
THERMAL... SAND ON BEACH FEELS....
Answer:
BRAINLIEST PLZZZ
Explanation:
They play a major role in protein synthesis. They act as the powerhouse for the cell. They are involved in the separation of chromosomes during cell division.
