The correct answer is: b. It is free to bind to another promoter and begin transcription
Transcription is the first step of gene expression in which DNA molecule is copied (transcribed) into RNA (mRNA) by RNA polymerase. The process of transcription is divided into three phases:
1. Initiation
• RNA polymerase with transcriptional factors bind to gene promoter
• RNA polymerase unwinds DNA double helix (transcription bubble is formed)
2. Elongation
• RNA polymerases adds nucleotides complementary to DNA
3. Termination
• RNA polymerase gets to stop codon (transcribes a sequence of DNA known as a terminator)
• Formed complementary RNA strand is released from DNA-RNA complex.
RNA polymerase is also released and can transcribe some other gene by binding to its promotor. RNA polymerase will transcribe just the genes whose products are needed at a particular moment.
Answer:
to indicate the smallest unit of a repeating substance
Explanation:
Correct answer: A). The enzyme influences the speed of change from substrate to product
The enzymes are the biological catalyst that speed up the rate of chemical reactions by decreasing the activation energy of the reaction pathway.
They increase the speed of change of substrate to the product and it remains unchanged in the reaction. Hence, it can be used again and again.
Enzymes are highly specific in nature, only a specific substrate binds to the enzyme's active site. Hence, a particular enzyme is required to catalyze a reaction.
Answer:
<em>The correct option is A) The cell theory is the result of explanations of scientists' observations and not a description of the cell structure as it relates to the function.</em>
Explanation:
The cell theory can never become a law because Scientific theories are well-tested explanations, while laws are well-tested descriptions of natural phenomena; one cannot become the other.
A scientific theory is subjected to be changed overtime but a law cannot change. We have observed many changes in the cell theory in the past and we might find changes in this theory in the future also. Hence, the cell theory can never become a law.
Hey There Maiam,
<span>What is the symbol equation for aerobic respiration?
Answer: </span><span>1. </span>Aerobic Respiration<span>. It is important that you learn both the word and chemical </span>equation<span>. In the above </span>equations<span> we see that glucose is broken down by oxygen to release energy with carbon dioxide and water being produced as by-products of the reaction</span>
