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1. The research done by Gregor Mendel is important because it showed a. physical traits in bacteria are determined by chromosomes. b. chromosomes in pea plants separate during cell division. c. DNA is present in bacteria. d. physical traits in pea plants are passed between generations. 2. Transcription of the lacZ and lacy genes of the lac operon begins when a. the repressor is released from the promoter b. the repressor protein binds to the inducer c. RNA polymerase binds to the lacZ gene d. lactose binds to the operator 3. During DNA replication, the function of RNA primers is to: a. serve as a binding site for DNA ligase b. serve as starting points for DNA strand elongation by DNA polymerase III in prokaryotes c. serve as starting points for DNA strand elongation by DNA polymerase I in the 3' - 5' direction d. open replication bubbles 4. Which statement about purines is true? a. Each purine is base pair with a pyrmidine. b. They are adenine and guanine. c. They are nitrogenous bases with a double ring structure. d. All of the above. 5. During DNA replication, one of the new strands of DNA is synthesized continuously. The other strand is synthesized as a number of separate fragments of DNA that are subsequently linked by DNA ligase. Why does this occur? a. RNA primers only anneal to one of the parental strands of DNA. b. One of the parental strands is unwound slower than the other by helicase. c. DNA polymerase III only synthesizes DNA in the 3' - 5' direction. d. DNA polymerase III only synthesizes DNA in the 5' - 3' direction. 6. Why is DNA replication considered to be semiconservative? a. Each original DNA strands makes a copy of its complementary base pair. b. Each original DNA strands makes a copy of itself. c. It keeps half of the old nucleotides. d. None of the above. 7. Which enzyme separates and unwinds the DNA strands at the beginning of replication? a. helicase b. ligase c. gyrase d. topoisomerase

1. The research done by Gregor Mendel is important because it showed a. physical traits in bacteria are determined by chromosomes. b. chromosomes in pea plants separate during cell division. c. DNA is present in bacteria. d. physical traits in pea plants are passed between generations. 2. Transcription of the lacZ and lacy genes of the lac operon begins when a. the repressor is released from the promoter b. the repressor protein binds to the inducer c. RNA polymerase binds to the lacZ gene d. lactose binds to the operator 3. During DNA replication, the function of RNA primers is to: a. serve as a binding site for DNA ligase b. serve as starting points for DNA strand elongation by DNA polymerase III in prokaryotes c. serve as starting points for DNA strand elongation by DNA polymerase I in the 3' - 5' direction d. open replication bubbles 4. Which statement about purines is true? a. Each purine is base pair with a pyrmidine. b. They are adenine and guanine. c. They are nitrogenous bases with a double ring structure. d. All of the above. 5. During DNA replication, one of the new strands of DNA is synthesized continuously. The other strand is synthesized as a number of separate fragments of DNA that are subsequently linked by DNA ligase. Why does this occur? a. RNA primers only anneal to one of the parental strands of DNA. b. One of the parental strands is unwound slower than the other by helicase. c. DNA polymerase III only synthesizes DNA in the 3' - 5' direction. d. DNA polymerase III only synthesizes DNA in the 5' - 3' direction. 6. Why is DNA replication considered to be semiconservative? a. Each original DNA strands makes a copy of its complementary base pair. b. Each original DNA strands makes a copy of itself. c. It keeps half of the old nucleotides. d. None of the above. 7. Which enzyme separates and unwinds the DNA strands at the beginning of replication? a. helicase b. ligase c. gyrase d. topoisomerase

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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1. The research done by Gregor Mendel is important because it showed a. physical traits in bacteria are determined by chromosomes. b. chromosomes in pea plants separate during cell division. c. DNA is present in bacteria. d. physical traits in pea plants are passed between generations. 2. Transcription of the lacZ and lacy genes of the lac operon begins when a. the repressor is released from the promoter b. the repressor protein binds to the inducer c. RNA polymerase binds to the lacZ gene d. lactose binds to the operator 3. During DNA replication, the function of RNA primers is to: a. serve as a binding site for DNA ligase b. serve as starting points for DNA strand elongation by DNA polymerase III in prokaryotes c. serve as starting points for DNA strand elongation by DNA polymerase I in the 3' - 5' direction d. open replication bubbles 4. Which statement about purines is true? a. Each purine is base pair with a pyrmidine. b. They are adenine and guanine. c. They are nitrogenous bases with a double ring structure. d. All of the above. 5. During DNA replication, one of the new strands of DNA is synthesized continuously. The other strand is synthesized as a number of separate fragments of DNA that are subsequently linked by DNA ligase. Why does this occur? a. RNA primers only anneal to one of the parental strands of DNA. b. One of the parental strands is unwound slower than the other by helicase. c. DNA polymerase III only synthesizes DNA in the 3' - 5' direction. d. DNA polymerase III only synthesizes DNA in the 5' - 3' direction. 6. Why is DNA replication considered to be semiconservative? a. Each original DNA strands makes a copy of its complementary base pair. b. Each original DNA strands makes a copy of itself. c. It keeps half of the old nucleotides. d. None of the above. 7. Which enzyme separates and unwinds the DNA strands at the beginning of replication? a. helicase b. ligase c. gyrase d. topoisomerase
Transcribed Image Text:1. The research done by Gregor Mendel is important because it showed a. physical traits in bacteria are determined by chromosomes. b. chromosomes in pea plants separate during cell division. c. DNA is present in bacteria. d. physical traits in pea plants are passed between generations. 2. Transcription of the lacZ and lacy genes of the lac operon begins when a. the repressor is released from the promoter b. the repressor protein binds to the inducer c. RNA polymerase binds to the lacZ gene d. lactose binds to the operator 3. During DNA replication, the function of RNA primers is to: a. serve as a binding site for DNA ligase b. serve as starting points for DNA strand elongation by DNA polymerase III in prokaryotes c. serve as starting points for DNA strand elongation by DNA polymerase I in the 3' - 5' direction d. open replication bubbles 4. Which statement about purines is true? a. Each purine is base pair with a pyrmidine. b. They are adenine and guanine. c. They are nitrogenous bases with a double ring structure. d. All of the above. 5. During DNA replication, one of the new strands of DNA is synthesized continuously. The other strand is synthesized as a number of separate fragments of DNA that are subsequently linked by DNA ligase. Why does this occur? a. RNA primers only anneal to one of the parental strands of DNA. b. One of the parental strands is unwound slower than the other by helicase. c. DNA polymerase III only synthesizes DNA in the 3' - 5' direction. d. DNA polymerase III only synthesizes DNA in the 5' - 3' direction. 6. Why is DNA replication considered to be semiconservative? a. Each original DNA strands makes a copy of its complementary base pair. b. Each original DNA strands makes a copy of itself. c. It keeps half of the old nucleotides. d. None of the above. 7. Which enzyme separates and unwinds the DNA strands at the beginning of replication? a. helicase b. ligase c. gyrase d. topoisomerase
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