If a DNA sequence has 10% guanine, which of the following is TRUE?
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- Which of the following statements about the structure or composition of DNA is FALSE? O DNA is a double helix Complementary base-pairing occurs between pyrimidine and purine bases O The amount of thymine closely approximates that of guanine within a particular organism O The base-pairing is mediated by hydrogen bonding O Adenine pairs with thymine and guanine with cytosineWhich of the following is true about DNA ? * Two DNA strands are twisted around each other to form an anti-parallel double helix Adenine pairs with thymine though 2 hydrogen bonds (A=T) Guanine pairs with cytosine through 3 hydrogen bonds (GEC). O All of themWhich of the following statements about the DNA double helix is FALSE? O The base pairs are located in the center of the helix O The plane of the base pairs is perpendicular to the direction of the deoxyribose- phosphate backbone O The two strands have the same 5' to 3' direction (i.e, are parallel) O The base pairs stack on one another O The deoxyribose-phosphate backbone is on the outside of the helix
- There are four types of nucleotides in DNA molecules. Which of the following is NOT one of the four types of DNA nucleotides? O Adenine O Cytosine O Guanine O Thymine O ValineA double-stranded molecule of DNA has 80 T nucleotides and 110 G nucleotides. What is the TOTAL number of nucleotides in this molecule of DNA? O 80 O 110 O 160 O 190 220 O 380According to Chargaff's rule, if the DNA of a species contains 20% adenine, what percent of guanine will it contain? O 20% O 30% O 606 O none of the above
- Examine the 5'- 3 sequence of bases of the DNA molecules (A D) shown below. I am only showing you the 5 - 3' strand of each molecule, but you can imagine the complementary 3' - 5' strand for each molecule. Which double-stranded molecule is held together by 10 hydrogen bonds? O AAAT O ATAG O TGTC O GCGAA strand of DNA contains the base pair 5’-T-C-A-G-C-A-T-3’. Give the base sequence onthe complementary DNA strand.Which of the following base pairs is/are not possible in B-DNA? H O A and B O A and C O only A O only B O Band C O only C O all of them O none of them
- Which of the following is something that DNA and RNA have in common? They are both nucleic acids They are both only found in the nucleus They are both made of deoxyribose sugar They are both double stranded Sign out US Lenovo 40 esc $4 1. 2 4. 7 tab W e r y f k a V n shift alt ctrl ctrl altIf thymine makes up 15% of the nitrogenous bases in a specific DNA molecule, what percent of the bases are cytosine? O 15% O 30% 35% O 42.5% O 70% 85%If I'm any organism a dna molecule is 24% cytosine, how much adenine will that dna molocule contian