Homework Answers
Answer-
Parental DNA contains N15. After one round of DNA repllication (semiconservative) both daughter DNAs will contain one strand containing N15 and other strand containing N14. So DNA will form band in hybrid region (N15-N14) in density gradient centrifugation. So correct option is B.
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QUESTION 6 DNA is formed that contains only SN. It is allowed to undergo a single...
In the late 1950s, Meselson and Stahl grew bacteria in a medium containing "heavy" nitrogen (^15...
In the late 1950s, Meselson and Stahl grew bacteria in a medium containing "heavy" nitrogen (^15 N) and then transferred the bacteria to a medium containing^14 N ("lighter" nitrogen) and allowed some of the the bacteria to undergo one round of replication and some bacteria to undergo two rounds of replication. They then performed density gradient centrifugation and looked to see where the DNA settled in the test tube. In the diagram below, draw bands indicating the density of the...
Please explain which one I missed, I got a 8/10. Might be the last question that...
Please explain which one I missed, I got a 8/10. Might be the
last question that I missed!
ament Quiz -U01-202020 Fund of Biology | The Meselson-Stahl experiment demonstrated that DNA replication produces two DNA molecules each composed of _? Select one a One Old stand of nucleotides and One new strand of nucleotides b. A varying number of strands of old and new nucleotides Two strands of old and new nucleotides mixed d. Two new strands of nucleotides e....
If DNA was replicated via a conservative mechanism and you repeated the Meselson and Stahl experiment,...
If DNA was replicated via a conservative mechanism and you repeated the Meselson and Stahl experiment, what would you expect to see when the bacteria was allowed to replicate 3 times (60 min) in the N14 medium and DNA was extracted and centrifuged? Select one: a. several bands (uncountable) forming a smear across the tube b. Two bands one formed using only N14 and one formed by N15 c. it is impossible to determine given the information provided d. Two...
Please need help answering question A the pages of background information are posted thanks Read page...
Please need help answering question A the pages of background
information are posted thanks
Read page 196-197 and figure 6.20. regarding Meselson and
Stahl’s experiment regarding DNA replication. And Answer the
following question
If you are using this radioactive technique in mouse cells,
what would happen in each phase of G1, S, G2, mitosis and meiosis
assuming that you are grown cells in 15N medium for many
generations and cells in G1are then switched to 14N medium?
G1
S
G2...
What would have been an appropriate conclusion if Gorbsky et al had seen the photobleached mark...
What would have been an appropriate conclusion if Gorbsky et al had seen the photobleached mark to move towards the centrosome? Select one: a. None of the statements could be concluded from that result b. Dyenin moves the chromosomes towards the poles of the spindle c. Microtubules shorten at the chromosome end during anaphase d. Microtubules shorten at the centrosome end during anaphase e. Kinesin moves the chromosomes towards the poles of the spindle If DNA was replicated via a...
Question 45 Which of the following body axis is determined by the sperm entry point in...
Question 45 Which of the following body axis is determined by the sperm entry point in the developing frog embryo? Not yet answered Points out of 2.50 Flag question Select one: O a. none of the body axis are determined by the site of sperm entry O b. Anterior - posterior O c. right-left O d. Dorsal - ventral Question 46 Not yet answered If DNA was replicated via a conservative mechanism and you repeated the Meselson and Stahl experiment,...
base pairing Done stand is positively charged and th one strand contains only purind e DNA...
base pairing Done stand is positively charged and th one strand contains only purind e DNA elych o ly me h 40) En me that wind the DNA strands during replication A. helicase B. mucienne E primase D. DNA polymerase 41) The leading and the lasing and differ in that A) the leading strand is synthesized in the same direction is the movement of the replication fork, and the lagring strand is synthesized in the opposite direction B) the leading...
4. In a lake governed by the food web shown in the image to the right, 500 brown trout are added from fisheries. Which of the following outcomes would most likely be expected? A. Tadpole populat...
4. In a lake governed by the food web shown in the image to the right, 500 brown trout are added from fisheries. Which of the following outcomes would most likely be expected? A. Tadpole population will increase B. Duck population will decrease C. Algae population will increase D. Lilly Pad population will decrease E. Caddis Fly larvae will increase 5. Which of the following pieces of evidence most strongly supports a common ancestor of all life on Earth? 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...
Need help filling in the chart and answering the questions that go along with it. I...
Need help filling in the chart and answering the questions
that go along with it. I have added the procedure and the
instructions as well as the "results" that are supposed to be used
to fill in the chart. Thank you!
We were unable to transcribe this imageTABLE 8-1 Cast of Characters and a Legend of Abbreviations Name Symbol Function in This Experiment Green fluorescent protein GFP It serves as an indicator of successful transformation and gene transcription expression in...
In the late 1950s, Meselson and Stahl grew bacteria in a medium containing "heavy" nitrogen (^15 N) and then transferred the bacteria to a medium containing^14 N ("lighter" nitrogen) and allowed some of the the bacteria to undergo one round of replication and some bacteria to undergo two rounds of replication. They then performed density gradient centrifugation and looked to see where the DNA settled in the test tube. In the diagram below, draw bands indicating the density of the...
Please explain which one I missed, I got a 8/10. Might be the
last question that I missed!
ament Quiz -U01-202020 Fund of Biology | The Meselson-Stahl experiment demonstrated that DNA replication produces two DNA molecules each composed of _? Select one a One Old stand of nucleotides and One new strand of nucleotides b. A varying number of strands of old and new nucleotides Two strands of old and new nucleotides mixed d. Two new strands of nucleotides e....
If DNA was replicated via a conservative mechanism and you repeated the Meselson and Stahl experiment, what would you expect to see when the bacteria was allowed to replicate 3 times (60 min) in the N14 medium and DNA was extracted and centrifuged? Select one: a. several bands (uncountable) forming a smear across the tube b. Two bands one formed using only N14 and one formed by N15 c. it is impossible to determine given the information provided d. Two...
Please need help answering question A the pages of background
information are posted thanks
Read page 196-197 and figure 6.20. regarding Meselson and
Stahl’s experiment regarding DNA replication. And Answer the
following question
If you are using this radioactive technique in mouse cells,
what would happen in each phase of G1, S, G2, mitosis and meiosis
assuming that you are grown cells in 15N medium for many
generations and cells in G1are then switched to 14N medium?
G1
S
G2...
What would have been an appropriate conclusion if Gorbsky et al had seen the photobleached mark to move towards the centrosome? Select one: a. None of the statements could be concluded from that result b. Dyenin moves the chromosomes towards the poles of the spindle c. Microtubules shorten at the chromosome end during anaphase d. Microtubules shorten at the centrosome end during anaphase e. Kinesin moves the chromosomes towards the poles of the spindle If DNA was replicated via a...
Question 45 Which of the following body axis is determined by the sperm entry point in the developing frog embryo? Not yet answered Points out of 2.50 Flag question Select one: O a. none of the body axis are determined by the site of sperm entry O b. Anterior - posterior O c. right-left O d. Dorsal - ventral Question 46 Not yet answered If DNA was replicated via a conservative mechanism and you repeated the Meselson and Stahl experiment,...
base pairing Done stand is positively charged and th one strand contains only purind e DNA elych o ly me h 40) En me that wind the DNA strands during replication A. helicase B. mucienne E primase D. DNA polymerase 41) The leading and the lasing and differ in that A) the leading strand is synthesized in the same direction is the movement of the replication fork, and the lagring strand is synthesized in the opposite direction B) the leading...
4. In a lake governed by the food web shown in the image to the right, 500 brown trout are added from fisheries. Which of the following outcomes would most likely be expected? A. Tadpole population will increase B. Duck population will decrease C. Algae population will increase D. Lilly Pad population will decrease E. Caddis Fly larvae will increase 5. Which of the following pieces of evidence most strongly supports a common ancestor of all life on Earth? 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...
Need help filling in the chart and answering the questions
that go along with it. I have added the procedure and the
instructions as well as the "results" that are supposed to be used
to fill in the chart. Thank you!
We were unable to transcribe this imageTABLE 8-1 Cast of Characters and a Legend of Abbreviations Name Symbol Function in This Experiment Green fluorescent protein GFP It serves as an indicator of successful transformation and gene transcription expression in...
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