1. Biology

    Which of the following statements regarding DNA and RNA is true? DNA can melt while RNA cannot. DNA is resistant to alkaline hydrolysis while RNA is not. DNA contains phosphodiester bonds while RNA does not. DNA can form double helices while RNA cannot.

    asked by John on April 26, 2017
  2. science please help

    in evolutionary terms, RNA is thought to have preceded proteins and DNA. Which of the following observations provides the most convincing support for hypothesis? a) there are more types of RNA than there are DNA b) RNA contains combined catalytic,

    asked by john on May 13, 2015
  3. biology

    i have some notes but before christmas break was here i had surgery so i didn't get to finish my notes in class and i don't understand much of my work so heres part of my notes: DNA and RNA Differences: #of strands for DNA? RNA? sugar DNA? RNA? Base that

    asked by alex on December 31, 2007
  4. science

    In evolutionary terms, RNA is thought to have preceded proteins and DNA. Which of the following provides the most convincing support for this hypothesis? a. there are more types of RNA than there are of DNA b. RNA can both store genetic information and act

    asked by tim on October 16, 2015
  5. biology

    In evolutionary terms, RNA is thought to have preceded proteins and DNA. Which of the following provides the most convincing support for this hypothesis? a. there are more types of RNA than there are of DNA b. RNA can both store genetic information and act

    asked by Time on September 26, 2015
  6. biology

    In evolutionary terms, RNA is thought to have preceded proteins and DNA. Which of the following provides the most convincing support for this hypothesis? a. there are more types of RNA than there are of DNA b. RNA can both store genetic information and act

    asked by Tim on September 24, 2015
  7. biology

    In evolutionary terms, RNA is thought to have preceded proteins and DNA. Which of the following provides the most convincing support for this hypothesis? a. there are more types of RNA than there are of DNA b. RNA can both store genetic information and act

    asked by Tim on September 24, 2015
  8. Science

    RNA is thought to have proceeded proteins and DNA, why? A. more types of RNA than DNA B. single stranded RNA is less complex than DNA Not sure if either are correct?

    asked by sharon on February 17, 2016
  9. AP Biology- Molecular Genetics

    The correct sequence between genes and their phenotypic expression is a) RNA-DNA-protein-trait b) DNA-RNA-protein-trait c) Protein-DNA-RNA-trait d) trait-DNA-RNA-protein I think it is either b or d but do not know if the trait is at the beginnig or end...

    asked by Jill on March 14, 2011
  10. DNA &RNA

    State two differences between DNA and RNA. we did not study this at all, so far I see that DNA has several million nucleotides, the smaller RNA only has several thousand of them. the second thing I noticed is that they both have a base,a five carbon sugar

    asked by sport on February 26, 2009
  11. intro chemistry college

    State two differences between DNA and RNA. we did not study this at all, so far I see that DNA has several million nucleotides, the smaller RNA only has several thousand of them. the second thing I noticed is that they both have a base,a five carbon sugar

    asked by sport on February 26, 2009
  12. genetics

    Though this question sucks, which enzyme elongates the new DNA strand starting at an RNA primer? A.DNA polymerase I B.DNA polymerase III C.DNA polymerase II D.DNA ligase E.RNA polymerase

    asked by Lucy on March 22, 2015
  13. Biology

    17. When errors in nucleotide sequencing occur, a. DNA polymerases replaces the incorrect nucleotide with the correct nucleotide b. enzymes dissolve the incorrect nucleotide so DNA polymerase can add the correct one c. purines replace pyrimidines in the

    asked by mysterychicken on February 8, 2010
  14. Biology

    17. When errors in nucleotide sequencing occur, a. DNA polymerases replaces the incorrect nucleotide with the correct nucleotide b. enzymes dissolve the incorrect nucleotide so DNA polymerase can add the correct one c. purines replace pyrimidines in the

    asked by mysterychicken on February 8, 2010
  15. Bio

    of the following, the best conclusion concerning the difference between the S phases for beta and gamma is that: a. gamma contains more DNA than beta b. beta and gamma contains the same amout of DNA c. beta contains more RNA than gamma d. gamma contains 48

    asked by Awalmeer on October 24, 2007
  16. Biochemistry

    Just need help. Question: One strand of DNA is completely transcribed into RNA by RNA polymerase. The base composition of the DNA template strand is: G =20%. C=25%, A=15%, and T=40%. What would you expect the composition of the newly synthesized RNA to be?

    asked by James on October 2, 2009
  17. Biology

    Using RNA a s a template for prot e in synthesis instead of t r ans l a t ing prot e ins directly from the DNA is advantageous for the cell because A) RNA is much more stable than DNA. B) RNA acts as an expendable copy of the genetic material, allowing the

    asked by Matthew on December 11, 2011
  18. Chemistry

    since nucleic acis have charged phosphate groups, DNA and RNA contain lots of negative charges. Would you suspect that DNA and RNA are soluble in polar solvent like water?

    asked by Heather on May 5, 2009
  19. Biology

    http://talk.collegeconfidential.com/showthread.php?p=4515174 Imagine you had made an RNA copy of each strand of a DNA double helix. If you were now to mix these two RNA single-strand copies together, do you think they would form a double-stranded RNA

    asked by bobpursley on August 5, 2007
  20. biology

    why are RNA viruses much more deadly than DNA viruses? Thank you for using the Jiskha Homework Help Forum. Biology is out of my field but here are some links on RNA & DNA viruses: 1. http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/V/Viruses.html 2.

    asked by help me please!!! on March 20, 2007
  21. biology

    1.How many strands of mRNA are transcribed from the two "unzipped" strandsof DNA? 2.What are the three parts of an RNA nucleotide? 3.How does base pairing differ in RNA and DNA? 4.What is the function of mRNA? 5. What is a codon?

    asked by alex on December 31, 2007
  22. Anatomy + Physiology

    What are the building blocks for nucleic acids DNA and RNA? DNA (deoxyribonucleic acid) and RNA (ribonucleic acid) are polymers of nucleotides linked in a chain through phosphodiester bonds. In biological systems, they serve as information-carrying

    asked by AJ on November 7, 2006
  23. Science

    what is the difference between RNA and DNA?

    asked by Lynn on January 24, 2010
  24. science

    What is the difference between RNA and DNA that can be used to separate them from one another?

    asked by jonathan on April 9, 2008
  25. science

    wehat is the difference between RNA and DNA that allows them to be separated?

    asked by allie on April 9, 2008
  26. biology

    1. What are the three parts that make up a nucleotide? 2. What is the sugar found in DNA? 3. What are the four different bases found in DNA nucleotides? 4. What two parts make up the sides of the DNA “ladder”? 5. What holds the sugars and the

    asked by Anonymous on February 24, 2008
  27. Genetics

    Given the sequence of bases in the sense strand of DNA shown below, please answer the following questions. 5'-ATGTTTCCCCAGAAGAGGTATGGGAAAAAGATTTGA-3' a. Show the sequence of bases in the messenger RNA encoded by this gene. I'm not sure what this means. I

    asked by Jenna on November 4, 2009
  28. Biology

    During transcription, when RNA nucleotides form base pairs with the DNA template, does this mean that RNA nucleotides and DNA nucleotides pair up?

    asked by Anonymous on September 24, 2014
  29. Bio...DNA

    Can anyone explain the relationship between the structure of DNA , protein structure and phenotype of an organism? Also, what is the role of DNA in protein synthesis? I will give you a little hint. The DNA makes the RNA. The RNA makes the proteins by amino

    asked by Pet on May 20, 2007
  30. Biology

    8. Where is RNA formed? 9. Write out the pairings from DNA to RNA. 10. Where is RNA formed? To where does it travel? 11. What is the difference between mRNA and tRNA? 12. What are three bases of mRNA called? At what organelle are they read? 13. What is the

    asked by Tiffany on January 29, 2008
  31. Biology

    sorry a few more questions why can DNA form fibres that allow it to seprate from RNA while RNA cant form such fibres? also, when treated with DNAse, I know DNA viscosity reduces because its cut up into smaller pieces. but on a graph of viscosity vs time, I

    asked by Steven on April 9, 2008
  32. Biology

    I need help with DNA conversion. First of all, I needed to convert this DNA sequence into its RNA equivalent. 5'-TACTTCTTCAAGACT-3' After the conversion, I came up with this.. 3'-AUGAAGAAGUUCUGA-5'. Is this correct? Then I need to take the converted

    asked by Marsha on April 10, 2009
  33. biology

    Indentify what category (protein, carbohydrate, or lipid) each of the following is: hemoglobin, ligaments, RNA, DNA, muscle fibers, cholesterol I thought RNA and DNA were nuecleotides.. but who knows? Thanks in advance. If those are the only 3 possible

    asked by Natalia on September 27, 2006
  34. biochem

    dna template of auc? dna template of met? would that be ATC or TAG? Met's rna temp would be AUG. so its dna is TAC? or ATG? im confused.

    asked by sheen on January 14, 2016
  35. Biology

    Convert the following DNA sequence into its RNA equivalent and then using the genetic code, convert that RNA sequence into the amino acid sequence. 5’–TACTTCTTCAAGACT-3’ For this above DNA sequence, what information is contained in the

    asked by Sherri on April 13, 2009
  36. Anthropolgy

    If one strand of DNA has a nucleotide base sequence of TCAGGTCCATAT, What is its complement base sequence? If the above is the DNA template strand, what is the corresponding RNA nucleotide base sequence? How many amino acids are coded for on the segment of

    asked by Ted on May 26, 2008
  37. Microbes and Society

    ) what cancer diseases that are linked to DNA and RNA tumor viruses. Which diseases are they and which viruses are the causative agents? Describe at least 4 diseases linked to viruses (both DNA and RNA). please help

    asked by Dianne on February 15, 2017
  38. Biology

    I need some help with these questions. I've chosen answers, but I want to make sure if they are correct. 1)Which of the following is an acidic pH? 6 7 8 800 A: 6 None of the above ------------------------------------- 2) Which of the following is directly

    asked by Krista on March 20, 2015
  39. science please help

    after the DNA strands are separated, which of the following is the next step of DNA replication in the S phase of the cell cycle? A) Action of helicase B) formation of RNA primer C) Breaking of hydrogen bonds D) joining of nucleotides i think it is either

    asked by john on May 13, 2015
  40. science please help

    after the dna strands are separated, which of the following is the next step of DNA replication in the S phase of the cell cycle? Action of helicase formantion of RNa primer breaking go hydrogen bonds joining of nucleotides i think either B or D

    asked by john on May 13, 2015
  41. Science

    I answered the questions, but I don't know if my choices are right. 1) Which of the following is an acidic pH? 6 7 8 800 None of the Above Answer: 6 ------------------------------------- 2) Which of the following is directly produced by photosynthesis?

    asked by Jane on March 21, 2015
  42. Biology

    Why do we use dna primer for PCR but RNA primer for dna polymerase in cells

    asked by asdasdfasdf on March 11, 2016
  43. Biology

    Where in the cell does DNA become RNA?

    asked by Katie.. on January 15, 2008
  44. Biology

    Why DNA is more stable than RNA?

    asked by Mengistu on January 12, 2013
  45. Science

    Genes are specific sections of (Fill in the blank) Answer choices alleles, chromosome, incomplete dominance, mitosis, codominance, centromere, DNA, diploid, reproduce, phenotype, meiosis, RNA Is the answer chromosome, or DNA?

    asked by Anonymous on October 15, 2014
  46. Chemistry

    State two differences between DNA and RNA.

    asked by Laura on February 22, 2009
  47. science

    what is the number of strands in dna and rna?

    asked by Tammy on February 24, 2009
  48. biology

    in what aspects are DNA and RNA polymerases similar?

    asked by Anonymous on November 29, 2013
  49. Bio

    What gives you your amino acid chain, DNA or RNA?

    asked by A. on May 28, 2016
  50. biology

    what are the advantages of beginning with RNA versus DNA?

    asked by Gordon on September 8, 2010
  51. Biology

    do mutations occur in DNA or RNA? Explain

    asked by Cam on December 18, 2012
  52. Biology

    Mention the role of DNA and RNA in living organisms?

    asked by Harsh on July 4, 2014
  53. science

    in evolutionaly terms, RNA is though to have preceded proteins and DNA.

    asked by qq on November 29, 2016
  54. science

    if a DNA virus infects a cell, why must it produce RNA?

    asked by robbie on December 2, 2012
  55. science

    Which molecule contains ribose has its sugar? where in the cell does DNA become RNA?

    asked by Kristen on January 15, 2008
  56. Science

    What is in RNA, but not in DNA? a.) thymine b.) thyroid c.) adenine d.) uracil

    asked by Brittany on September 20, 2007
  57. chemistry

    If I isolated a strand of nucleotides, how could I determine if they were DNA or RNA?

    asked by ana on July 14, 2011
  58. biochemistry

    pls help! discuss the effect of acids and alkalis on DNA & RNA. Thanks.

    asked by victor on February 6, 2011
  59. biology

    explain why the synthesis of proteins, DNA and RNA requires energy. thanks :)

    asked by grace on September 21, 2011
  60. Science

    What is DNA and RNA? How do it work? How does it reproduce? How does it mutate? How do things evolve?

    asked by Hossain on February 23, 2015
  61. Biology

    What are the macromolecules DNA and RNA referred to as? Proteins Carbohydrates Nucleic acids

    asked by Help me quick question on November 6, 2014
  62. AP Biology

    the process of making a complimentary copy of the DNA to form RNA is called?

    asked by unknown on February 23, 2011
  63. DNA

    I have to build a DNA and RNA structure. It must stand on its own. What materials would you suggest i use? Thank you. http://biology.about.com/c/ht/00/07/How_DNA_Model_Candy0962932481.htm

    asked by Amanda on November 5, 2006
  64. science

    19. The term chromatin refers to a. the color of certain cells b. chromosomal DNA c. the fluid within the nucleus d. ribosomal RNA

    asked by erica on January 28, 2013
  65. Biology

    During translation, the amino acid detaches from the transfer RNA molecule and attaches to the end of a growing protein chain when a. the ribosomal RNA anticodon binds to the messenger RNA codon. b. the transfer RNA anticodon binds to the messenger RNA

    asked by iTrY on August 6, 2017
  66. Biology

    Which of the following is not a terminal electron acceptor in anaerobic respirations? a)nitrite b)carbon dioxide c)hydrogen sulfide d)sulfate e)nitrate Question 2 Which of the following is not an end product of fermentation? a)pyruvate b)none of the

    asked by Tommy on September 10, 2010
  67. ap biology

    The best conclusion concerning delta is that the cells a. contain no DNA. b. contain no RNA. c. contain only one chromosome that is very short d. are actually in the G0 phase e. divide in the G1phase Explain your choice: Would it be d?

    asked by Ella on November 19, 2014
  68. Biology

    5. Dideoxynucleosides are employed in the course of the Sanger process of DNA sequencing. Dideocynucleosides are used because a) They stop the synthesis of DNA strands b) They are fluoresce c) They are radioactive d) They move quicly during gel

    asked by Deepa on May 8, 2014
  69. science (Genetics and Evolution)

    What contains DNA? Where is DNA found? What is the difference between phenotype and genotype?

    asked by jason on May 3, 2011
  70. help please on this

    Making a vaccine for HIV is difficult because the virus has a rapid rate of (A)__________. This is because it is a(n) (B)________ - its genetic material is RNA instead of DNA.

    asked by john on May 21, 2014
  71. Biology

    DNA can copy itself easier than RNA because? A. its a double helix B. polymer of nucleotide C. its confined to nucleus D.its supported by histone proteins I have no idea

    asked by sharon on February 17, 2016
  72. Science

    DNA can copy itself easier than RNA because? A. its a double helix B. polymer of nucleotide C. its confined to nucleus D.its supported by histone proteins I have no idea

    asked by sharon on February 17, 2016
  73. science

    Lipids: Not a polymer because _ __x's energy than carbs Saturated= Unsaturated= Nucleic Acids: RNA= DNA= Carbohydrates: Building blockks

    asked by Katie on January 26, 2013
  74. science help

    Chromosone pairs contain diffrent versions of genes, which are called? A.alleles B.chromosome C.mitosis D.DNA E.RNA F.diploid G.meiosis H.phenotype Is the answer A??

    asked by happy on October 16, 2014
  75. Science plz help

    Explain the basic parts of a major theme in molecular biology: the pathway of DNA to RNA to proteins. Include a general idea of what occurs at each stage

    asked by Sara on January 23, 2015
  76. Biology

    A preventive treatment to help avoid contracting a viral disease that cannot be treated with antibiotics is a A.DNA fingerprint. B.vaccine. C.transfer RNA. D.transgenic human genome.

    asked by TonsOfQs on August 6, 2017
  77. Science

    RNA is to U(Uracil) as DNA is to ? a. Cytosine (don't think so) b. Guanine (don't think so) c. Thymine d. Adenine

    asked by David on January 24, 2014
  78. Biology

    What is the basic unit of information in a DNA molecule? In an RNA molecule? In a polypeptide?

    asked by Anonymous on March 14, 2014
  79. AP Biology

    compare and contrast the mode of reproduction of a DNA virus with that of a typical RNA virus (retrovirus).

    asked by sheer on March 18, 2010
  80. Biology

    What is the role of Helicase in transcription? My textbook says RNA polymerase unzips the DNA during this process, so what does Helicase do?

    asked by Anonymous on September 19, 2014
  81. science

    Lisof a strand of the base sequence of a strand of RNA made using the DNA pattern ATCCGTC. Can you please help me

    asked by Gaby on February 24, 2009
  82. science

    what is the unity of life? if asked to explain two examples could it be a human and a chimp or would the two examples be DNA and RNA?

    asked by annie on January 16, 2013
  83. Biology-Is my answer correct

    Which of the following must occur for a mismatch error to be repaired? Which is the best answer, I think it's A, am I right? A)Damaged DNA must be identified by DNA repair proteins B)The sequence of nucelotides in the damaged DNA sequence must guide the

    asked by jake on November 21, 2011
  84. Biology

    Which of the following must occur for a mismatch error to be repaired? Which is the best answer, I think it's A, am I right? A)Damaged DNA must be identified by DNA repair proteins B)The sequence of nucelotides in the damaged DNA sequence must guide the

    asked by jake on November 21, 2011
  85. science

    Which of the following must occur for a mismatch error to be repaired? Which is the best answer, I think it's A, am I right? A)Damaged DNA must be identified by DNA repair proteins B)The sequence of nucelotides in the damaged DNA sequence must guide the

    asked by jake on November 21, 2011
  86. Science-important!

    Which of the following must occur for a mismatch error to be repaired? Which is the best answer, I think it's A or B. A)Damaged DNA must be identified by DNA repair proteins B)The sequence of nucelotides in the damaged DNA sequence must guide the synthesis

    asked by jake on November 21, 2011
  87. science

    Which of the following must occur for a mismatch error to be repaired? Which is the best answer, I think it's A or B. A)Damaged DNA must be identified by DNA repair proteins B)The sequence of nucelotides in the damaged DNA sequence must guide the synthesis

    asked by jake on November 20, 2011
  88. Science

    mismatch error to be repaired? Which is the best answer, I think it's A. Can someone who know's science tell me if I am right? A)Damaged DNA must be identified by DNA repair proteins B)The sequence of nucelotides in the damaged DNA sequence must guide the

    asked by jake on November 21, 2011
  89. biology

    In the search to discover the agents that caused mad cow disease, scrapie in sheep, and CJD and kuru in humans, the diseased brain tissues were filtered and still found to be infective, indicating they are not bacteria but either viruses or chemical

    asked by Brooke on October 11, 2008
  90. Self assembly

    Can self assembly of macromolecules occur in vivo? I think it does occur. DNA, RNA, polypeptides, etc. http://www.worldscibooks.com/physics/5347.html

    asked by Mary on November 9, 2006
  91. AP Biology

    1.Oparin and Haldane hypothesized that the Earth's early atmosphere was strongly (2 points) acidic. oxidizing. reducing. ~~ ionic. 2.The most significant outcome of the Miller and Urey experiments was that they (2 points) synthesized living cells from

    asked by henry on September 12, 2012
  92. Biololgy

    Genetic engineering a. Allows the use of bacteria as production factories for a number of molecules b. Relies of recombinant DNA technology c. Is dependent on RNA enzymes d.Relies completely on conjugation e. a and b

    asked by Mecia on June 21, 2008
  93. biology

    What is the difference betwen RNA virus and Retrovirus?

    asked by Nuwaya on January 10, 2012
  94. biology

    What is the difference betwen RNA virus and Retrovirus?

    asked by Nuwaya on January 10, 2012
  95. biochemistry: Protein Synthesis

    1. Assume that a particular microorganism has 50 distinct t-rna molecules, and that it has 100 copies of each type of t-rna. Further assume that average number of nucleotides in each t-rna is 80. What is the energy cost, expressed as number of phosphoric

    asked by mae on October 23, 2007
  96. Biology

    Where RNA is present? in cytoplasm or nucleus or both of them. Thank you for using the Jiskha Homework Help Forum. I'd begin with the information found on Wikipedia: http://en.wikipedia.org/wiki/RNA (the basics)

    asked by Candy on March 4, 2007
  97. Biology

    In the final step of DNA extraction from E. Coli bacteria, we used ethanol so that the DNA would precipitate. Why is it that DNA precipitates in ethanol, and not in water? Both of them are polar solvents, and so is DNA. So why doesn't water make DNA

    asked by Christiaan on November 11, 2008
  98. Genetics, HELP!!!

    Planet X, a recently discovered planet, contains life forms that have double-stranded DNA as the genetic material. The DNA on Planet X is transcribed into RNA which is translated into protein. Planet X DNA contains only two bases: guanine (G) and cytosine

    asked by Zack on February 21, 2016
  99. CHEMISTRY

    Discuss, in detail, the role played by DNA and RNA in genetic diseases. What are the breakthroughs, if any, in the treatment/management of genetic diseases?

    asked by ken on August 19, 2011
  100. chemistry urgent urgent

    Discuss, in detail, the role played by DNA and RNA in genetic diseases. What are the breakthroughs, if any, in the treatment/management of genetic diseases?

    asked by zachary on January 15, 2013