Homework Answers
Ans.53. Option A is the correct answer.
EXPLANATIONS:- RNA polymerase are the enzyme that are used during the transcription process for the synthesis of the RNA on the DNA templates. It does not have the proofreading as much as DNA polymerase. It uses the ribonucleotides for the synthesis of RNA strand.
Ans.54. Option B is the correct answer.
EXPLANATIONS:- The tRNA are always read in the 5'---- 3' directions. The anticodon for leucrne will be 3'- AAC-5'.
Ans.55. Option E is the correct answer.
EXPLANATIONS:- In protein synthesis process, ribosomes are responsible for the translation of mRNA into polypeptides. The process of the translation occurs in the cytoplasm. Ribosome is very necessary for this process. That is why , ribosome is also called as the protein factory of the cell.
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53. RNA polymerases differ from DNA polymerases in that A. RNA polymerases are less effective at...
13. Why are ribonucleoside triphosphates the monomers required for RNA synthesis rather than ribonucleoside monophosphates? A....
13. Why are ribonucleoside triphosphates the monomers required for RNA synthesis rather than ribonucleoside monophosphates? A. Only ribonucleoside triphosphates contain the sugar ribose. B. Ribonucleoside triphosphates have low potential energy, making the polymerization reaction endergonic. C. Ribonucleoside triphosphates have high potential energy, making the polymerization reaction exergonic. D. Ribonucleoside monophosphates cannot form complementary base pairs with the DNA template. E. Ribonucleoside triphosphates are not used, rather all use deoxyriboside triphosphates. 14. How is a mutation in a bacterial cell that...
Compared to RNA elongation by RNA polymerases, DNA elongation by DNA polymerase requires an additional reaction...
Compared to RNA elongation by RNA polymerases, DNA elongation by DNA polymerase requires an additional reaction component. Which is appropriate for fulfillment of this requirement? Select one: a. a primase is needed for the biological DNA replication. b. a short DNA primer is necessary for PCR. c. a host tRNA is used for the synthesis of DNA by viral reverse transcriptase. d. All of these e. None of these
1.) In which direction is RNA transcribed? 2.) Which of the two strands (A or...
1.) In which direction is RNA transcribed?
2.) Which of the two strands (A or B) serves as the TEMPLATE
strand for the transcription of a mRNA that contains both a start
and a stop codon?
3.) Which number (1, 2, 3, 4, or 5) best approximates the
location of the -10 consensus sequence?
4.) How many amino acids long is the protein encoded by the mRNA
from this DNA sequence?
5.) What is the second...
Question 2a If the DNA template 5′- ATGGATGC -3′ is transcribed to RNA, the RNA would...
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...
Choose the correct option DNA polymerases: (A) all have a 5′–3′5′–3′ exonuclease activity for proofreading. (B)...
Choose the correct option DNA polymerases: (A) all have a 5′–3′5′–3′ exonuclease activity for proofreading. (B) are only found at replication forks. (C) only polymerize in a 5′ to 3′5′ to 3′ direction. (D) are all highly processive.
1. Which of the following statements about the flow of genetic information is true? a. Proteins...
1. Which of the following statements about the flow of genetic information is true? a. Proteins encode information that is used to produce other proteins of the same amino acid sequence. b. RNA encodes information that is translated into DNA, and DNA encodes information that is translated into proteins. c. Proteins encode information that can be translated into RNA, and RNA encodes information that can be transcribed into DNA. d. DNA encodes information that is translated into RNA, and RNA...
Question 2 1 pts A sequence of DNA that contains information for the synthesis of RNA...
Question 2 1 pts A sequence of DNA that contains information for the synthesis of RNA molecules used in the manufacture of proteins is also known as a(n) intron. mutation. gene. codon. Flag this Question Question 3 1 pts A small segment of DNA on the template strand contains the base sequence CGT. If an mRNA transcript is made that includes this sequence, what would be the anticodon on the tRNA that would bind to this corresponding mRNA sequence? CGT...
QUESTION 34 The gene encoding an E. coli tRNA containing the anticodon 5'-GUA-3' mutates so that...
QUESTION 34 The gene encoding an E. coli tRNA containing the anticodon 5'-GUA-3' mutates so that the anticodon now is 5'-UUA-3'. What will be the effect of this mutation? a. The bacterial ribosomes would stop translation whenever a tyrosine codon in a mRNA is positioned in the A site. b. The bacterial ribosomes would stop translation whenever a leucine codon in a mRNA is positioned in the A site. c. The bacterial ribosomes would compete with the termination factor to...
Question 16 1 pts Which is true of RNA polymerases in both prokaryotic and eukaryotic organisms?...
Question 16 1 pts Which is true of RNA polymerases in both prokaryotic and eukaryotic organisms? They have the same number of cofactors in prokaryotes and eukaryotes. They are composed of an analogous a 2ßß'w core. They make copies of RNA from either DNA or RNA templates. There is a single enzyme type per organism. Question 17 1 pts What are E. coli sigma (o) subunits in RNA synthesis? transcription factors receptor proteins RNA polymerases ODNA promoter regions Question 11...
Student Sheet Name Title: Making Sentences of DNA structions coded in DNA in this activity yoids....
Student Sheet Name Title: Making Sentences of DNA structions coded in DNA in this activity yoids. The words Introduction: The instructions coded in DNA must be read and turned into pro molecules for the cell to carry out the instructions. In this activity you will model this process using sentences for DNA and RNA and words for amino acids. The words must line up in the correct order for the protein to form properly, just like words in a sentence...
13. Why are ribonucleoside triphosphates the monomers required for RNA synthesis rather than ribonucleoside monophosphates? A. Only ribonucleoside triphosphates contain the sugar ribose. B. Ribonucleoside triphosphates have low potential energy, making the polymerization reaction endergonic. C. Ribonucleoside triphosphates have high potential energy, making the polymerization reaction exergonic. D. Ribonucleoside monophosphates cannot form complementary base pairs with the DNA template. E. Ribonucleoside triphosphates are not used, rather all use deoxyriboside triphosphates. 14. How is a mutation in a bacterial cell that...
1.) In which direction is RNA transcribed?
2.) Which of the two strands (A or B) serves as the TEMPLATE
strand for the transcription of a mRNA that contains both a start
and a stop codon?
3.) Which number (1, 2, 3, 4, or 5) best approximates the
location of the -10 consensus sequence?
4.) How many amino acids long is the protein encoded by the mRNA
from this DNA sequence?
5.) What is the second...
QUESTION 34 The gene encoding an E. coli tRNA containing the anticodon 5'-GUA-3' mutates so that the anticodon now is 5'-UUA-3'. What will be the effect of this mutation? a. The bacterial ribosomes would stop translation whenever a tyrosine codon in a mRNA is positioned in the A site. b. The bacterial ribosomes would stop translation whenever a leucine codon in a mRNA is positioned in the A site. c. The bacterial ribosomes would compete with the termination factor to...
Question 16 1 pts Which is true of RNA polymerases in both prokaryotic and eukaryotic organisms? They have the same number of cofactors in prokaryotes and eukaryotes. They are composed of an analogous a 2ßß'w core. They make copies of RNA from either DNA or RNA templates. There is a single enzyme type per organism. Question 17 1 pts What are E. coli sigma (o) subunits in RNA synthesis? transcription factors receptor proteins RNA polymerases ODNA promoter regions Question 11...
Student Sheet Name Title: Making Sentences of DNA structions coded in DNA in this activity yoids. The words Introduction: The instructions coded in DNA must be read and turned into pro molecules for the cell to carry out the instructions. In this activity you will model this process using sentences for DNA and RNA and words for amino acids. The words must line up in the correct order for the protein to form properly, just like words in a sentence...
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