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.
All matching codons in all organisms DNA code for the same amino acids.
Option D.
<h3><u>Explanation:</u></h3>
Codons are defined as group of three nucleotide bases that forms a triplet, and codes for a particular amino acid.
There are four nitrogen bases, so four possible nucleotides. Among them, 3 are stop codons, rest 61 are codons denoting the 20 amino acids. Codons are discrete, meaning no same codon codes for more than 1 amino acid.
And these codons are universal. It means, like AUG denotes for amino acid methionine, and that is same in bacteria, as well as in all organisms. So they are universal.
They still limited for what they can actually eat<span />
The student should make sure that the instrument she will be using to measure the pH of the water is valid.
Validity is concerned with an object's goal is able to measure the intended object.
<span> With this conclusion validity, our data gathered and presented are considered a reasonable one. It is the most important types of validity. As what is said, by having conclusion validity, your data will be undoubtedly least considered since it is labelled as statistical and well-studied. Once you already mention the word statistics meaning it is studied and surveyed with the most of the human race and includes relationship in your data.</span>
A biological community of interacting organisms and their physical environment.
