Homework Answers
Ans:
61. E. The DNA polymerase stops before finishing synthesis at the 5' ends of the newly synthesised linear molecule - is the reason for linear replication problem.
62. E. Varicella virus causes shingles and chicken pox.
Explanation:
Varicella virus gets into your body, it first causes chicken pox, after this it stays in the nervous tissues near brain and spinal cord. Sometimes, in later stages it travels through the nerve fibres and cause shingles.
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QUESTION 61 Which of the following is the reason for the linear replication problem? O A....
Why is there a problem replicating the ends of linear DNA? Group of answer choices Leading...
Why is there a problem replicating the ends of linear DNA? Group of answer choices Leading strand synthesis primed at the replication origin of a linear DNA can’t remove and replace the primer. Lagging strand synthesis primed at the ends of a linear DNA can’t be removed and replaced because there is no 3'-OH available. Since replication only initiates at the ends of linear DNA, the priming of each leading strand leaves a primer at the end that cannot be...
Multiple Choice Cellular respiration and photosynthesis each employ an electron transport chain. Which statement below do...
Multiple Choice Cellular respiration and photosynthesis each employ an electron transport chain. Which statement below do the two electron transport gains not have in common? a.They both generate a proton (H+) gradient across a membrane b.They both involve redox reaction s c.They both occur in plant cells d.They both are embedded within a membrane e.Each of the above is shared by each electron transport chain Why do linear chromosomes become shorter each time DNA replication occurs? a.The leading strand cannot...
QUESTION 50 The mRNAs of which of the following viruses lack a poly (A) tail: O...
QUESTION 50 The mRNAs of which of the following viruses lack a poly (A) tail: O A. rabies virus OB, B19 parvovirus OC. herpes simplex virus D.varicella zoster virus O E. rotavirus QUESTION 51 What is the function of an IRES? O A. causes ribosomes to stutter B. causes RNA-dependent RNA polymerase to stutter C. allows DNA synthesis without a primer D. makes RNA resistant to endonuclease E. allows ribosomes to initiate translation without a cap group
QUESTION 5 Which one of the following explains the RNA molecule the best? O A. It...
QUESTION 5 Which one of the following explains the RNA molecule the best? O A. It contains uracil in place of thymine O B. It is generally a single strand molecule O C. Its sugar is ribose O D. All of the above QUESTION 10 A form of replication in which the two parental DNA strands remain together following DNA replication is O semi-conservative O conservative o dispersive o all of the above QUESTION 11 Which of the following is...
14. Which of the following statements is true of lipids? A) Many contain fatty acids in...
14. Which of the following statements is true of lipids? A) Many contain fatty acids in ester or amide linkage. B) Most are simply polymers of isoprene C) Testosterone is an important sphingolipid found in myelin. D) They are more soluble in water than in chloroform. E) They play only passive roles as energy-storage molecules. 15. The sigma factor of E. coli RNA polymerase: A) associates with the promoter before binding core enzyme. B) combines with the core enzyme to...
Question 14 1 points Save Answer DNA replication poses several challenges to the cell that must...
Question 14 1 points Save Answer DNA replication poses several challenges to the cell that must be resolved for replication to proceed. All of the following are cellular solutions to the challenges posed by DNA replication except... O A. Helicase unwinds to the DNA to allow the replication fork to form. O B. Primase synthesizes an RNA primer since DNA polymerase can only extend an existing polynucleotide chain. O C. Higher eukaryotes utilize multiple origins of replication to reduce the...
1. Which of the following statements is FALSE? Helicase activity 'unwinds DNA making the double-stranded molecule...
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....
DNA DNA Replication: ONA Because DNA Is the ge m Tumes and heart e ine in...
DNA DNA Replication: ONA Because DNA Is the ge m Tumes and heart e ine in process called DNA curs in the nucleus of s acest FS Parent strand Parent strand Newly replicated DNA Newly replicated DNA- SA0 Daughter DNA molecule Daughter DNA molecule Figure 8.2: Overview of DNA replication and illustration of complementary base pairing. DNA must replicate before cell division so that each new daughter cell receives an exact copy of the parent DNA. 1. Replication begins when...
QUESTION 50 The mRNAs of which of the following viruses lack a poly (A) tail: O A. rabies virus OB, B19 parvovirus OC. herpes simplex virus D.varicella zoster virus O E. rotavirus QUESTION 51 What is the function of an IRES? O A. causes ribosomes to stutter B. causes RNA-dependent RNA polymerase to stutter C. allows DNA synthesis without a primer D. makes RNA resistant to endonuclease E. allows ribosomes to initiate translation without a cap group
QUESTION 5 Which one of the following explains the RNA molecule the best? O A. It contains uracil in place of thymine O B. It is generally a single strand molecule O C. Its sugar is ribose O D. All of the above QUESTION 10 A form of replication in which the two parental DNA strands remain together following DNA replication is O semi-conservative O conservative o dispersive o all of the above QUESTION 11 Which of the following is...
14. Which of the following statements is true of lipids? A) Many contain fatty acids in ester or amide linkage. B) Most are simply polymers of isoprene C) Testosterone is an important sphingolipid found in myelin. D) They are more soluble in water than in chloroform. E) They play only passive roles as energy-storage molecules. 15. The sigma factor of E. coli RNA polymerase: A) associates with the promoter before binding core enzyme. B) combines with the core enzyme to...
Question 14 1 points Save Answer DNA replication poses several challenges to the cell that must be resolved for replication to proceed. All of the following are cellular solutions to the challenges posed by DNA replication except... O A. Helicase unwinds to the DNA to allow the replication fork to form. O B. Primase synthesizes an RNA primer since DNA polymerase can only extend an existing polynucleotide chain. O C. Higher eukaryotes utilize multiple origins of replication to reduce the...
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....
DNA DNA Replication: ONA Because DNA Is the ge m Tumes and heart e ine in process called DNA curs in the nucleus of s acest FS Parent strand Parent strand Newly replicated DNA Newly replicated DNA- SA0 Daughter DNA molecule Daughter DNA molecule Figure 8.2: Overview of DNA replication and illustration of complementary base pairing. DNA must replicate before cell division so that each new daughter cell receives an exact copy of the parent DNA. 1. Replication begins when...
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