If DNA analysis of a gene shows it has 20% adenine (A), what percent of the other bases does it have? Thymine (T): Cytosine (C): Guanine (G): Uracil (U):
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Q: By convention, nucleotide sequences are always written from the _____.
A:
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A: Answer is option E
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Q: A DNA sample contains 21% adenine. What is the complete percentage base composition?
A: Given Values: dsDNA has A = 21%
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Q: Type the matching bases in each DNA sequence. G A T A G C T A G G
A:
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- The nucleotides are very specific as to which bond together. The four nucleotides are:Adenine (A) Thymine (T)Guanine (G) Cytosine (C)They are written out in this order because Adenine always bonds with Thymine and Cytosine alwaysbonds with Guanine. Draw a line connecting those so you remember.Let’s practice making complementary strands. DNA: T-A-C-T-T-A-C-A-C-G-T-C-A-A-C-G-T-G-C-C-T-T-A-G-C-C-A-T-TDNA: A-T-GGo ahead and write out the complementary strand to the strand above continuing where we left off.DNA structure depends on base pairing of its four nucleotides, A, C, T, and G. Nucleotide A pairs with T, and nucleotide C pairs with G. This forms a four-letter DNA “alphabet." Because DNA codes for amino acids in sets of three nucleotides, there are 4 cubed (4'), or 64, possible combinations, coding for 20 different amino acids. What is the best explanation for why there is no selective advantage for DNA to have five nucleotides (e.g., A, C, T, G, and E) with C pairing with either G or functionally equivalent E? It would be impossible to form the DNA molecule, because it must have an equal number of Cs and Gs. Because G and E have the same role, there would still be four functional letters of the alphabet. Replication would be inaccurate because sometimes C would bond with G and sometimes C would bond with E. There would be a five-letter alphabet with 125 combinations, which is too numerous. It is impossible because there are not five known nucleotides in the cell.Draw a DNA structure that includes at least two criss crosses There must be 5 nucleotide pairs above and below each intersect. Label §Adenine §Thymine §Guanine §Cytosine §Phosphates §Sugars §Hydrogen bonds Color code each part and provide a key
- In the DNA structure, a purine molecule always binds with a pyrimidine molecule. How would you expect the structure to differ if Adenine forms base pairing with Guanine and Cytosine forms base pairing with Thymidine? Instead of A-T, G-C; can it be A-G, C-T? Justify your answer within five sentencesWrite out the DNA sequence using the following instructions: This is a double stranded DNA hydrogen bonding with each other following the principle of complementary base-pairing Each strand contains ten nucleotides Each strand contains all four different types of nucleotides You should indicate clearly the directionality of each strand in your answer You do not need to draw the full nucleotide structure. Use the one-letter code (A, T, G, C, or U) to represent each nucleotideA strand of nucleic acid is defined by its sequence of nucleotides: A, C, T, and G. How many different sequences are possible for a nucleic acid that is 200 nucleotides long? How does that number compare to the estimated number of atoms in the universe, which is approximately 1080?
- Some Discoveries about DNA DNA is made of deoxyribose sugar, phosphate, and four nucleotides (A, G, C, and T). DNA was originally isolated from white blood cells. X-ray diffraction of the DNA molecules shows that it is a helical structure. Adenine pairs with thymine and guanine pairs with cytosine in any sample of DNA. DNA, not proteins, carries genetic information. Match the following scientists with their discoveries listed above. Discovery: Answer Answer Answer Answer Scientist: Franklin Chargaff Levene Hershey and ChaseThe chromosome of the bacterium (prokaryote) Escherichia coli has a size of approximately 4,000 kilobases (kb) [one kilobase = 1,000 bases]. What length of DNA (B form) would be contained in it? How does this length compare to the average size and/or volume of this bacterium?Which of the following does NOT describe DNA as it occurs in Eukaryotic cells. CHOOSE ALL THAT APPLY: 1. nitrogenous bases of opposite strands are paired through covalent bonds 2. base pairs are stacked 3.4 A (0.34 nm) apart 3. the two strands of one double helix are complementary 4. two long polynucleotide chains 5. there are 20 base pairs per each turn of a double helix 6. adenine pairs with thymine of the neighboring nucleotide in a single DNA strand 7. bases face outside of the double helix 8. consecutive nucleotides of a single DNA strand are linked by hydrogen bonds 9. here are A-T and G-C pairs in DNA double helix 10. sugar-phosphate backbone of a single DNA strand is formed by linking deoxyribose units and phosphate groups through phosphodiester bonds 11. the two strands of one helix are antiparallel 12.double helix 13. the larger major groove alternates with the smaller minor groove along the length of the double stranded DNA I tried 2,3,4,9,10,11,12,13 together and got it…
- Cytosine makes up 42% of the nucleotides in a sample of DNA from an organism. The composition of the remaining bases is % adenine, % guanine, and % thymine.Which one of these facts would NOT be needed in order to determine the correct base sequence from the image of DNA in the question above? Adenine and guanine are purines with a two-ring chemical structure. Cytosine and thymine are pyrimidines with a one-ring chemical structure. Adenine pairs only with thymine using two hydrogen-bonds. Cytosine pairs only with guanine using three hydrogen-bonds. All of the facts above are needed.(True or False) 1.) Fatty acids can be found in ceramides and TAGs. 2.) The adenine base can easily form hydrogen bonds with thymine with the least energy requirement. 3.) The 3'end of nucleic acids structurally has a free OH group bonded to the 3' carbon of the sugar. 4.) Naturally occurring RNA molecules are always single stranded in the cell 5.) The Watson and Crick double stranded DNA structure is always antiparallel.