Homework Answers
clusters of CG rich regions in intergenic regions in which the C is highly methylated.
many human genes have CpG islands near the promoter.
CpG islands are methylated in intragenic regions , mobile elements and repetitive sequence.
CpG islands within the transcription site are generally not methylated or relatively low level of methylation .
CpG island methylation of transcription start site is associated with stable long term silencing for example X- chromosome inacivation , imprinting ).
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Which of the following defines a CpG island? clusters of CG-rich regions in intergenic regions in...
3.13 pts) The restriction enzyme known as Notl recognizes the following sequence: 5-GCGGCCGC-3 3-CGCCGGCG-5 However, if...
3.13 pts) The restriction enzyme known as Notl recognizes the following sequence: 5-GCGGCCGC-3 3-CGCCGGCG-5 However, if the cytosines in this sequence have been methylated. NotI will not cleave the DNA at this site. For this reason, Net is commonly used to investigate the methylation state of CpG islands. A researcher has studied a gene, which we will call T. that is found in com, and encodes a transporter involved in the uptake of phosphate from the soil. A CpG island...
Which of the following is NOT a function of transcription that requires the activity from subunits...
Which of the following is NOT a function of transcription that requires the activity from subunits of the Core RNA Palymerase? a. RNA polymerase activity that base-pairs and polymerizes nucleotides to make mRNA. b. Helicase activity that unwinds the double-stranded DNA molecule for transcription c. Specific recognition of -35 box and -10 box sites in the promoter region. d. General binding that helps RNA polymerase loosely adhere to DNA, before Transcription begins. Oe. Trick Question. The Core RNA polymerase can...
2. Shifts in aggregate demand Which of the following formulas best defines GDP using the expenditure...
2. Shifts in aggregate demand
Which of the following formulas best defines GDP using the
expenditure method?
a- AD=I+G+(X−M)
b- AD=C−I−G+(X−M)
c- AD=C+I+G+(X−M)A
d- AD=C+I+G+X
Adjust the following graph by shifting either the curve or the point on the curve to illustrate an increase in government spending. PRICE LEVEL REAL GDP
Which of the following is not an RNA sequence that is recognized by the spliceosome during...
Which of the following is not an RNA sequence that is recognized by the spliceosome during the process of splicing? O A. The 5' splice site OB. The 3' splice site o C. The promoter OD. The branch point O E. All of the above are recognized by the spliceosome What is the role of the Shine-Dalgarno sequence near the 5' end of prokaryotic mRNAS? O A. It is the sequence recognized by IF-2 OB. It establishes the position of...
(2pts) Which of the following statements does NOT accurately describe enhancer sequences: A. Enhancer sequences can...
(2pts) Which of the following statements does NOT accurately describe enhancer sequences: A. Enhancer sequences can be located far away from the promoter that it regulates B. Enhancer sequences are cis-acting regulatory elements C. Enhancer sequences can be located either upstream (5’) or downstream (3’) the gene D.Enhancer sequences are located within 10 to 35 base pairs upstream of the promoter When bound by transcription factors, enhancer sequences enhance gene expression
Which of the following statements is true? A. RNA polymerase has a proofreading activity B. Prokaryotic...
Which of the following statements is true? A. RNA polymerase has a proofreading activity B. Prokaryotic RNA usually undergoes nuclear processing C. Polypeptides are synthesized by addition of amino acids to the amino terminus. D. The 3' end of mRNA corresponds to the carboxyl terminus of the protein. Grade 2. Which of the following A. It may be autocatalytic. B. Spliceosomes are present in organelles and nuclei C. It involves removal of exons is true regarding RNA processing? D. It...
Which of the following statements about splicing is false? A. a single gene can code for...
Which of the following statements about splicing is false? A. a single gene can code for many types of protein due to alternative splicing B. The 5' and 3' regions of the intron are highly variable in sequence C. the spliceosome is found in the nucleus of the cell D. The mRNA is composed of exons; introns are spliced out
Which of the following regions of the electromagnetic spectrum has the highest frequency? Select one: A....
Which of the following regions of the electromagnetic spectrum has the highest frequency? Select one: A. Visible light B. Microwaves C. Infrared radiation D. Ultraviolet radiation onization energy is the energy required to add an electron to an atom in the gaseous state. Select one: True False In the Bohr model of the atom, the greatest energy would be emitted if an electron relaxed from the n = 5 orbit to which orbit? Select one: A. n = 2 B....
Practice Problems ..0 | 4. 5. Which of the following dienes are s-trans and which are...
Practice Problems ..0 | 4. 5. Which of the following dienes are s-trans and which are s-cis? Of those that are s-trans, are they able to rotate to become s-cis? Reaction 0 6 o Maleic anhydride mp 53°C, MW 98.06 cis-Norbornene-5,6-endo-dicarboxylic anhydride mp 165°C, MW 164.16 Problem: 1) You are given 1 mL of freshly distilled cyclopentadiene in a clean vial and I g of maleic anhydride in weigh boat. The mass of the final product is 1.1g. A) Calculate...
4) Which of the following statements is TRUE? A) All orbitals except 1s have regions of...
4) Which of the following statements is TRUE? A) All orbitals except 1s have regions of opposite phase. B) All orbitals in a given atom are roughly the same size. C All orbitals contain one or more nodes. D) Since electrons have mass, we must always consider them to have only particle properties E) We can sometimes know the exact location and speed of an electron at the same time. F) All of the above are true. 5) Use the...
3.13 pts) The restriction enzyme known as Notl recognizes the following sequence: 5-GCGGCCGC-3 3-CGCCGGCG-5 However, if the cytosines in this sequence have been methylated. NotI will not cleave the DNA at this site. For this reason, Net is commonly used to investigate the methylation state of CpG islands. A researcher has studied a gene, which we will call T. that is found in com, and encodes a transporter involved in the uptake of phosphate from the soil. A CpG island...
Which of the following is NOT a function of transcription that requires the activity from subunits of the Core RNA Palymerase? a. RNA polymerase activity that base-pairs and polymerizes nucleotides to make mRNA. b. Helicase activity that unwinds the double-stranded DNA molecule for transcription c. Specific recognition of -35 box and -10 box sites in the promoter region. d. General binding that helps RNA polymerase loosely adhere to DNA, before Transcription begins. Oe. Trick Question. The Core RNA polymerase can...
2. Shifts in aggregate demand
Which of the following formulas best defines GDP using the
expenditure method?
a- AD=I+G+(X−M)
b- AD=C−I−G+(X−M)
c- AD=C+I+G+(X−M)A
d- AD=C+I+G+X
Adjust the following graph by shifting either the curve or the point on the curve to illustrate an increase in government spending. PRICE LEVEL REAL GDP
Which of the following is not an RNA sequence that is recognized by the spliceosome during the process of splicing? O A. The 5' splice site OB. The 3' splice site o C. The promoter OD. The branch point O E. All of the above are recognized by the spliceosome What is the role of the Shine-Dalgarno sequence near the 5' end of prokaryotic mRNAS? O A. It is the sequence recognized by IF-2 OB. It establishes the position of...
Which of the following statements is true? A. RNA polymerase has a proofreading activity B. Prokaryotic RNA usually undergoes nuclear processing C. Polypeptides are synthesized by addition of amino acids to the amino terminus. D. The 3' end of mRNA corresponds to the carboxyl terminus of the protein. Grade 2. Which of the following A. It may be autocatalytic. B. Spliceosomes are present in organelles and nuclei C. It involves removal of exons is true regarding RNA processing? D. It...
Practice Problems ..0 | 4. 5. Which of the following dienes are s-trans and which are s-cis? Of those that are s-trans, are they able to rotate to become s-cis? Reaction 0 6 o Maleic anhydride mp 53°C, MW 98.06 cis-Norbornene-5,6-endo-dicarboxylic anhydride mp 165°C, MW 164.16 Problem: 1) You are given 1 mL of freshly distilled cyclopentadiene in a clean vial and I g of maleic anhydride in weigh boat. The mass of the final product is 1.1g. A) Calculate...
4) Which of the following statements is TRUE? A) All orbitals except 1s have regions of opposite phase. B) All orbitals in a given atom are roughly the same size. C All orbitals contain one or more nodes. D) Since electrons have mass, we must always consider them to have only particle properties E) We can sometimes know the exact location and speed of an electron at the same time. F) All of the above are true. 5) Use the...
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