Which of the sugars in the following figure is/are D sugars? Choose all correct answers. CHO CHO CHO CHO НО H Н- НО H- Н OH Н OH ОН CH₂OH A Н- H H H ОН OH OH OH CH₂OH в Н HO H НО OH -H -ОН -H І CH OH C НО НО -H -OH -H H CH2OH D
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- State the properties of the WatsonCrick model of DNA in the following categories: a. number of polynucleotide chains b. polarity (running in same direction or opposite directions) c. bases on interior or exterior of molecule d. sugar/phosphate on interior or exterior of molecule e. which bases pair with which f. right- or left-handed helixWhich type of nucleic acid would have the sequence "ACCGAUUG"?If the sequence of one strand of a DNA molecule is 5’-AGCCCCGACTCTATTC-3’, what is the sequence of the complementary strand?
- Considering the principle of complementary base pairing, you would expect an equal ratio of which two nitrogenous bases in a DNA molecule? a. guanine and thymine b. uracil and adenine c. thymine and cytosine d. cytosine and guanine e. adenine and guanineWhich 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.What is the nucleotide sequence of the complementary strand of the DNA molecule: 5’-AATGCGATCTTCAT-3’? Indicate the 5’ and 3’ ends. Follow the same format as the given sequence.
- A 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?Watson and Crick, the pair of researchers who determined the structure of DNA, deduced the pairing of nucleotides in DNA using information learned from Erwin Chargaff. Which of the following is the correct pairing of nucleotides in DNA? a guanine with adenine; cytosine with adenine b adenine with thymine; guanine with cytosine c cytosine with guanine; uracil with adenine d cytosine with adenine; thymine with guanineWhen comparing the structures of RNA and DNA , which of the following statement is True?A-Only RNA contains 3'-deoxyribise rings B-Both RNA and DNA contain 3'-deoxyribise rings C-Only DNA contains 3'- deoxyribise rings D-Neither RNA or DNA contain 3'-deoxyribise rings
- Phosphate and deoxyribose make up what part of DNA?Which of the following cannot be said concerning base-pairing complementarity in DNA or RNA? Uracil forms 2 hydrogen bonds with Adenine. Thymine forms 2 hydrogen bonds with adenine. Purines pair with pyrimidines. Guanine forms 3 hydrogen bonds with cytosine. Pyrimidines pair with pyrimidines and purines pair with purines.Which of the following nucleotides contains a base found in DNA but not in RNA?