Homework Answers
The following events are necessary for DNA replication to occur :-
- A sufficient supply of nucleotides.
- Synthesis of additional histone proteins.
- Sufficient synthesis of Cyclin E protein for binding to Cyclin-dependent kinase.
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Which of the following events are necessary for DNA replication to occur? Choose all that apply....
Which of the following statements are true? Select one or more: a. Two sister chromatides arise...
Which of the following statements are true? Select one or more: a. Two sister chromatides arise by replication of the DNA of the same chromosome and remain paired as they line up on the metaphase plate b. Microtubule polymerization and depolymerization and microtubule motor proteins are all required for DNA replication during 5 Phase X C. Centrosomes are duplicated before M Phase begins d. Microtubules nucleate at the centromeres and then connect to the kinetochores, which are structures at the...
AS Part A Which of the following events occurs during DNA replication? All methylation of the...
AS Part A Which of the following events occurs during DNA replication? All methylation of the DNA is lost at the first round of replication Methylated DNA is copied in the cytoplasm, and unmethylated DNA is copied in the nucleus Methylation of the DNA is maintained because DNA polymerase directly incorporates methylated nucleotides into the new strand opposite any methylated nucleotides in the template. Methylation of the DNA is maintained because methylation enzymes act at DNA sites where ane strand...
4. Short response (2 sentences max, 6pts each) A. Many yeast species have only one cyclin-dependent kinase (Cdk), which activates protein targets that drive events in multiple phases of the cell cycl...
4. Short response (2 sentences max, 6pts each) A. Many yeast species have only one cyclin-dependent kinase (Cdk), which activates protein targets that drive events in multiple phases of the cell cycle. Why doesn't this Cdk activate G1-, S-, G2-, and M-phase proteins all at the same time? B. Please describe how cell death by apoptosis can play a beneficial role in the body's healthy growth. C. For a cell starting in G1, place the following cell cycle events in...
QUESTION 1 A gene that encodes a protein that stimulates progression of the cell cycle is...
QUESTION 1 A gene that encodes a protein that stimulates progression of the cell cycle is known as a proto-oncogene. True False QUESTION 2 Cytokinesis occurs after which stage or phase of the cell cycle? a. G2 b. S c. G0 d. G1 e. M phase QUESTION 3 During cell-cycle checkpoints, protein kinases known as CDKs phosphorylate target proteins only when they associate with a cyclin. True False QUESTION 4 During mitosis, many of the spindle fibers attach to chromosomes...
1. Describe one experiment that can test the hypothesis that DNA replication is semi conservative. Describe...
1. Describe one experiment that can test the hypothesis that DNA replication is semi conservative. Describe the results of this experiment if replication was conservative. And if it was distributive? 2. What type of chemical bond contributes to the specificity of base paring in the DNA? Are there any other chemical or physical factors in the structure o f the DNA molecule contributing to the thermodynamic stability of the DNA? 3. List the m ajor differences between DNA and RNA....
1. which of the following events characterizes metaphase of mitosis? 1. attachment of spindle fibers...
1. which of the following events characterizes metaphase of mitosis? 1. attachment of spindle fibers to the kinetochores of the chromosomes 2. movement of chromosomes to the equatorial plane of the cell. 3. separation of sister chromatids that are being pulled to the poles of the cell A. 1 B. 2 C. 3 D. 1 and 2 E. All of these 2. One cell undergoes one round of meiosis. How many genetically identical cells will be present...
1) Which of the following enzymes is capable of initiating DNA synthesis on a template: DNA...
1) Which of the following enzymes is capable of initiating DNA synthesis on a template: DNA polymerase I DNA polymerase II DNA polymerase III all of these are correct None of these are correct 2) In garden peas, yellow seed color is dominant over green seed color. A total of 4,092 offspring resulted in a cross between a heterozygous yellow and a homozygous green. Howmany of these seeds are homozygous green?" "4, 092" "3,069" "2,046" "1,023" None of these are...
Question 16 (5 points) Which of the following molecular structures contain codons? Question 16 options: a...
Question 16 (5 points) Which of the following molecular structures contain codons? Question 16 options: a protein tRNA rRNA mRNA Question 17 (5 points) Once researchers identified DNA as the molecule responsible for transmitting heritable traits, they asked how information was transferred from the DNA in the nucleus to the site of protein synthesis in the cytoplasm. Which of the following statements correctly describes the mechanism of information transfer in eukaryotes that accomplishes this task? Question 17 options: DNA from...
answer all pls 5 Figure K 3 19. Which of the bonds in Figure K above...
answer all pls
5 Figure K 3 19. Which of the bonds in Figure K above are hydrogen bonds? A. 1 only B. 1&2 C. 2 only D. 3 only E. 4 only 20. What macromolecule is shown in Figure K above? A. A protein B. DNA C. A triglyceride D. A carbohydrate E. RNA Figure M CH3 он NH2 21. How many asymmetric carbons does the molecule in Figure M have? A. 3 B. 2 C.4 D.1 E.O 22....
Quession 14 Which statement about mitosis is true? Select one a. DNA replication is completed in...
Quession 14 Which statement about mitosis is true? Select one a. DNA replication is completed in prophase. b. The chromosome number in the resulting cells is halved c. Two genetically identical daughter cells are formed. d Crossing over occurs during prophase e. It consists of two nuclear divisions. Quession 15 How does a nucleus in G2 difler from a nucleus in G17 Select one a. DNA synthesis occurs only in G1 phase. b Inactive cells are arrested only in G2...
Which of the following statements are true? Select one or more: a. Two sister chromatides arise by replication of the DNA of the same chromosome and remain paired as they line up on the metaphase plate b. Microtubule polymerization and depolymerization and microtubule motor proteins are all required for DNA replication during 5 Phase X C. Centrosomes are duplicated before M Phase begins d. Microtubules nucleate at the centromeres and then connect to the kinetochores, which are structures at the...
AS Part A Which of the following events occurs during DNA replication? All methylation of the DNA is lost at the first round of replication Methylated DNA is copied in the cytoplasm, and unmethylated DNA is copied in the nucleus Methylation of the DNA is maintained because DNA polymerase directly incorporates methylated nucleotides into the new strand opposite any methylated nucleotides in the template. Methylation of the DNA is maintained because methylation enzymes act at DNA sites where ane strand...
4. Short response (2 sentences max, 6pts each) A. Many yeast species have only one cyclin-dependent kinase (Cdk), which activates protein targets that drive events in multiple phases of the cell cycle. Why doesn't this Cdk activate G1-, S-, G2-, and M-phase proteins all at the same time? B. Please describe how cell death by apoptosis can play a beneficial role in the body's healthy growth. C. For a cell starting in G1, place the following cell cycle events in...
Question 16 (5 points) Which of the following molecular structures contain codons? Question 16 options: a protein tRNA rRNA mRNA Question 17 (5 points) Once researchers identified DNA as the molecule responsible for transmitting heritable traits, they asked how information was transferred from the DNA in the nucleus to the site of protein synthesis in the cytoplasm. Which of the following statements correctly describes the mechanism of information transfer in eukaryotes that accomplishes this task? Question 17 options: DNA from...
answer all pls
5 Figure K 3 19. Which of the bonds in Figure K above are hydrogen bonds? A. 1 only B. 1&2 C. 2 only D. 3 only E. 4 only 20. What macromolecule is shown in Figure K above? A. A protein B. DNA C. A triglyceride D. A carbohydrate E. RNA Figure M CH3 он NH2 21. How many asymmetric carbons does the molecule in Figure M have? A. 3 B. 2 C.4 D.1 E.O 22....
Quession 14 Which statement about mitosis is true? Select one a. DNA replication is completed in prophase. b. The chromosome number in the resulting cells is halved c. Two genetically identical daughter cells are formed. d Crossing over occurs during prophase e. It consists of two nuclear divisions. Quession 15 How does a nucleus in G2 difler from a nucleus in G17 Select one a. DNA synthesis occurs only in G1 phase. b Inactive cells are arrested only in G2...
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