Answer:
A) repressors
Explanation:
A transcription factor is a protein that controls the rate of transcription of genetic information from DNA to messenger RNA, by binding to specific DNA sequence. The function of TFs is to regulate-turn on and off genes-In order to make sure that they are expressed in the right cell, at the right time and in the right amount throughout the life of the cell and the organism. Groups of TFs function in a coordinated fashion to direct cell division, cell growth and cell death throughout life.
D=misreading the instrument
In physical cosmology, cosmic inflation, cosmological inflation, or just inflation, is a theory of exponential expansion of space in the early universe. The inflationary epoch lasted from 10−36 seconds after the conjectured Big Bang singularity to sometime between 10−33 and 10−32 seconds after the singularity.
Answer:
Gram positive bacteria will be lysed whereas gram negative bacteria will be unaffected.
Explanation:
- Lysozyme treatment degrades bacterial cell wall. It destroys the peptidoglycan cell wall by hydrolyzing the glycosidic bond between NAM and NAG sugar residues present in the cell wall.
- Gram positive bacteria has a thick peptidoglycan cell wall with only a thin outer layer of techoic acid. So when exposed to lysozyme, the peptidoglycan layer disintegrates and forms debris.
- Gram negative bacteria has a thin peptidoglycan cell wall and a tough outer membrane. The outer membrane does not allow the lysozyme to come in contact with the cell wall keeping it intact.
- Hence, Gram positive bacteria will be lysed whereas gram negative bacteria will be unaffected by lysozyme treatment.
