In bacterial cells, the translation of mRNA can begin as soon as the leading 5’ end of the mRNA molecule peels away from the DNA template. This coupling can be used for eukaryotic cells as well: True / False
In a bacterial cell, the transcription and translation process are coupled and occur simultaneously in the cytoplasm of the cell. But in eukaryotic cell transcription occurs in the nucleus and after several post-transcriptional modifications, the mRNA is sent to the cytoplasm where translation occurs.
The answer is false.
In bacterial cells, the translation of mRNA can begin as soon as the leading 5’ end...
1. Which of the following statements concerning transcription of bacterial mRNA is not true? Bacterial mRNA must have intron material removed before it can be used in the process of protein translation.* Energy necessary for transcription is provided by the breaking of phosphate bonds carried by ribonucleotide triphosphates (rNTPs). A sigma factor recognizes the promoter site sequences on the DNA strand during transcription. A guanine-rich sequence on the template DNA molecule causes the growing RNA strand to loop and detach.
There are several changes that occur to pre-mRNA in eukaryotic cells to produce the final mRNA molecule that will be used in translation. This process is called RNA processing. Which of the following occurs in the process of producing this final mRNA molecule? a poly-A tail is added to the 5' end a modified guanine nucleotide is added to the 3' end the introns are cut out and the exons are attached to each other none of the above
What are the answers to the following genetics questions: Translation begins when the DNA in a chromosome unwinds and one strand is used as a template to make a pre-mRNA molecule. a. True b. False Each amino acid has a different side chain, called a(n) ____. a. amino strand b. carboxyl group c. R group d. glucose pentose configuration e. ribosomal attachment Lactose intolerance is caused by a(n) ____. a. nucleotide substitution that prevents lactose production b. variant manifestation of...
where does transcription begin
3. List the major types of RNA and include what they code for, their function in the cell and which type is translated. 4. If a bacterial protein has 2,500 amino acids long, how many nucleotide pairs long is the ger sequence that codes for it? 5. Where does transcription begin? 6. What is the template and nontemplate strands of DNA? 7. Why is only one strand transcribed, and is the same strand of DNA always...
compare selection and mutation
1. DNA molecules in the cells exist as a........ 2. DNA carry the information to build and maintain the cells life by four letters of genetic language True False 3. The term phenotype is used to describe all of the organism's genetic information True / False 4. All of the organism DNA encode genes True/ False 5. Bacteria have one chromosome which is circular structure associated with proteins (no histones) True False 6. In the process...
1. Which of the following statements is FALSE? Helicase activity 'unwinds DNA making the double-stranded molecule into single strands. b. The leading strand of DNA is started by an RNA primer The lagging strand of DNA is synthesized as "Okazaki fragments", cach with its own RNA primer. DNA replication proceeds in both directions around the bacterial chromosome. DNA polymerase synthesives new DNA in one direction (3 to 5) only. 2. Which of the following would be found in eukaryotes? a....
Question 2a If the DNA template 5′- ATGGATGC -3′ is transcribed to RNA, the RNA would be best described as... a. 3′- TACCTACG -5′. b. 5′- ATGGATGC -3′. c. 5′- AUGGAUGC -3′. d. 5′- UACCUACG -5′. e. 3′- UACCUACG -5′. Question 2b Which answer best summarizes how eukaryotic and bacterial RNA polymerases are different? a. Eukaryotes have several types of multimeric RNA polymerases, whereas bacteria only have one monomeric RNA polymerase. b. Eukaryotes have several types of RNA polymerases, one...
1 pts DI Question 6 What region of this molecule shown would bind to mRNA during translation? 3' A-OH 5' A Cacceptor stem G C G- U TuC loop D-loop C U GACAC m'A GGAGAGm m' G C-G A-U variable loop Anticodon loop Cm U A Gm A A The 5' end The anticodon loop The 3 end The variable loop The acceptor stem D Question 7 1 pts What is synthesized during transcription? O a strand of tRNA O...
The abundance of mRNA in mammalian cells is measured to be: a)1% of total RNA content b)10% of total cell content c)80% of total RNA content d)The same as protein content 2. RNAi is used for one of the following purposes. a) To disrupt a DNA b) To clone a particular gene c) To verify the function of a gene d) To produce a new gene To successfully express a protein from a eukaryotic expression vector, the following is NOT...
Prokaryotic mRNA usually encodes for more than one protein while eukaryotic mRNA a single protein. Eukaryotic DNA is linear and bacterial and archaeal DNA is-linear. In prokaryotes, ribosomes attach to the mRNA and start protein synthesis even before transcription is completed. Eukaryotic mRNA, rRNA, and tRNA are all highway processed. Nuclear pore complexes control the entry and exit to and from the nucleus. They will not let mRNA exit the nucleus before it is full processed. Eukaryotic and archaeal DNA...