Answer:
a. The operon is under positive control
a.) Loss of enzyme synthesis results from loss of regulatory R gene product which is regulated in the presence of Tis ophane for transcription. Absence of (Tis), transcription is positively controlled by regulatory Rprotein
b.) The proposed model reveals Tis / B complex prevents Tis enzymes from undergoing transcription through the RB operator by binding to the B region
the role of the R protein is
-decrease affinity of Tis / B complex to B region of RB
-bind to the R region on RB
- change the conformation of B region
- yield decreased affinity of Tis / B complex when R gene is lacking preventing transcription in the process
Effects of the RB mutations is that R protein will not bind to Tis / B complex to reduce transcription
Answer:
Basically, the pour plate technique can be used to determine the number of microbes/ mL in a specimen. It has the advantage of not requiring previously prepared plates, and is often used to assay bacterial contamination of food stuffs.
Explanation:
Let's break it down. We know that molecules are TWO AND MORE ATOMS so molecules is out. Cells are made up of atoms so cell could be the answer. Protons are made out of atoms which leaves D out. So we have proton and cells. Cells are made up of atoms BUT inside the atoms are protons. So answer is C)proton
Answer:
that some nice
so nice i made a remix
Steady callin' my ex
I done told you before that im g.ay,leave me be
Know your actually happy im gone
Dark clouds, you gon' see me fart aggressively
I won't hold back
But trust me, you're gon' smell that
smell that
Explanation: