Some Discoveries about DNA 1. DNA is made of deoxyribose sugar, phosphate, and four nucleotides (A, G, C, and T). 2. DNA was originally isolated from white blood cells. 3. X-ray diffraction of the DNA molecules shows that it is a helical structure. 4. Adenine pairs with thymine and guanine pairs with cytosine in any sample of DNA. 5. DNA, not proteins, carries genetic information. Match the following scientists with their discoveries listed above. Discovery: Hershey Franklin Chargaff Levene Scientist: and Chase

Some Discoveries about DNA 1. DNA is made of deoxyribose sugar, phosphate, and four nucleotides (A, G, C, and T). 2. DNA was originally isolated from white blood cells. 3. X-ray diffraction of the DNA molecules shows that it is a helical structure. 4. Adenine pairs with thymine and guanine pairs with cytosine in any sample of DNA. 5. DNA, not proteins, carries genetic information. Match the following scientists with their discoveries listed above. Discovery: Hershey Franklin Chargaff Levene Scientist: and Chase

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter6: Metabolism

Section: Chapter Questions

Problem 5RQ: DNA replication involves unwinding two strands of parent DNA, copying each strand to synthesize...

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Activity 4. Study the structure of DNA and answer the questions below. Sugar-Phosphate Backbones Nucleotide Key: O Adenine O Thymine I Guanine I Cytosine Hydrogen Bonds Antiparallel DNA Strands DNA Ladder Double Helix Fig. 9.DNA Structure. Retrieved June 19, 2020 from https://ib.bioninja.com.au/standard-level/topic-2-molecular- biology/26-structure-of-dna-and-rna/dna-structure.html 1. What are the common parts of the nucleotide? 2. Name the different kinds of nitrogenous bases found in the DNA molecule. 3. In DNA what is the paring arrangement of the bases?
True or False, if the statement is false, provide the correct answer. 1. The amino acid sequence is not responsible for specifying the 3D shape of a protein. 2. The red, orange, and yellow pigments found in plants, that are often visible in the fall are chlorophyll. 3. There are 10 base pairs in one full turn of the DNA double helix. 4. The stroma is a gel-like material within the chloroplast that corresponds to the cytoplasm of the original bacterium. 5. Plants gather the sun's energy with light-absorbing molecules called pigments.
Central Dogma Theory (Chapter 8.1, 8.2, 8.3, 8.4, 8.5, 8.6, & 8.7) o Page 7: Draw a double-stranded segment of DNA and label phosphate groups, sugars, and the 4 bases (adenine, guanine, cytosine, & thymine) correctly paired.
Please help me to answer the following: 1. Explain how the synthesis of a DNA daughter strand growing toward a replication fork differs from the synthesis of a daughter strand growing away from a replication fork. 2. The base sequence ACGTCT represents a portion of a single strand of DNA. Please draw the complete double stranded molecule for this portion of the strand and use the representation to illustrate the replication of the DNA strand.Please clearly identify the nucleotide bases involved, the new strands formed, and the daughter DNA molecules. 3. Please explain the origin of Okazaki fragments. Thank you very muxh for your help.
Some Processes Involved in DNA Replication 1. The replication origin is identified. 2. DNA primase builds RNA primer. 3. Okazaki fragments are spliced by DNA ligase. 4. Helicases bind and uncoil the DNA double helix. 5. RNA primer is the starting point for DNA polymerase. 6. DNA replication ends at the telomere where DNA codes for termination. 7. DNA polymerase adds complementary nucleotides in the 5' to 3' direction in short segments called Okazaki fragments. The sequence in which the events numbered above occur during DNA replication of the lagging strand is , and
Part C: The Big Picture – In this part, you will use the information from Part A and Part B so answer questions. 1. When you were creating the complimentary DNA strands, what bases (letters) paired together? Were there any bases that could pair with more than one base (letter)? 2. Using the following DNA sequence, ATTACGCATATG, what would the sequence of the complimentary strand be? 3. Could DNA be replicated without the use of enzymes? Explain your answer by giving specific examples. 4. If you replicate on strand of DNA, how many do you end up with? Are the strands identical to the original or different? How do you know? The bases that Paired to)ether Wa s
no explanation necessary! Letter of answer only. Part I: Multiple choice 1. The DNA base pairing rules are: a) Any combination of the bases. b) T pairs with C, and A pairs with G. c) A pairs with T, and C pairs with G. d) C pairs with A, and T pairs with G. 2. DNA in cells is damaged: a) Millions of times a day. b) By collisions with other molecules or by chemical accidents and radiation. c) Not very often¸ and by radiation only. d) a and b 3. For genes that code for proteins, which molecule conveys the information from the gene to the ribosome? a) DNA b) mRNA c) tRNA d) rRNA 4. Which of the molecules below is produced during replication? a) mRNA b) rRNA c) tRNA d) DNA 5. Why is there a difference between the synthesis of a lead strand and that of a discontinuous strand in DNA molecules? a) The origins of replication are found only at end 5' of the molecule. b) Helicase and protein factors act at the extremity of 5'. c) DNA polymerases can only add new nucleotides at the extremity 3' a…
Select the incorrect statement w.r.t. double helical structure of DNA. 1. The two chains of DNA run in anti-parallel fashion 2. The backbone is constituted by sugar-phosphate 3. The nitrogenous bases project outwards 4. Guanine is bonded with cytosine with three H-bonds
4 bases that make up DNA
II. Phoebus Levene (1920s) He is perhaps best known for his incorrect tetranucleotide hypothesis of DNA (DNA was made up of equal amounts of adenine, guanine, cytosine and thymine). He did, however, work to determine the chemical structures of many biochemicals. Specifically, he chemically analyzed DNA and stated it consisted of 3 parts. 2. What are the 3 parts of a nucleotide?
DNA strand below: 3’ T A C A T G C C G A A T G C C 5’ Discuss how will replication happen by mentioning the enzyme needed then transcribe to form mRNA. Discuss what will happen to mRNA, then translate, mentioning the anticodon to be used. Look at the genetic code to know what amino acid will become part of the polypeptide chain. 1. Give the discussion of the entire procedure
DNA: The Secret of Life https://www.youtube.com/watch?v=HwPWv50YcMY There were three main groups working to discover the structure of DNA. Who were the three different teams and what techniques were they using?