MCQ for DNA STRUCTURE

MCQ for DNA STRUCTURE The correct structure of DNA components can be presented as Phosphate-base-sugar Phosphate-sugar-base Base=phosphate-sugar Phosphate-sugar-phosphate-base Which one of the following is the complementary sequence of 5′ TTAAGCGTAC 3′?A. 5’ GTACGCTTAA 3′B. 5’ AATTCGCATG 3‘C. 5‘ CATGCGAATT 3’D. 5’ TTAAGCGTAC 3’  One of the functions of DNA is toA. secrete vacuoles.B. make copies of itself.C. join amino acids to each other.D. carry genetic information out of the nucleus.  Two sugars found in nucleic acids areA. sucrose and ribose.B. glucose and fructose.C. deoxyribose and ribose.D. deoxyribose and glucose. The number of adenine bases in a DNA molecule equals the number of thymine bases becauseA. DNA contains equal numbers of all four bases.B. thymine always follows adenine on each DNA strand.C. DNA is made of alternating adenine and thymine bases.D. adenine on one strand bonds to thymine on the other strand. Which of the following would not occur during complementary base pairing?A. A-TB. U-GC. C-GD. A-U Which of the following describes a DNA molecule?A. Double helix of glucose sugars and phosphates.B. Ladder-like structure composed of fats and sugars.C. Double chain of nucleotides joined by hydrogen bonds.D. A chain of alternating phosphates and nitrogenous base Which of the following is an example of complementary base pairing?A. Thymine – uracil.B. Guanine – adenine.C. Adenine – thymine.D.Cytosine – thymine. Which of the following is the correct matching of base pairs in DNA?A. Adenine–Guanine and Thymine–Uracil.B. Guanine–Cytosine and Adenine–Uracil.C. Adenine–Thymine and Guanine–Cytosine.D. Guanine–Thymine and Adenine–Cytosine The base found in RNA nucleotides but not in DNA nucleotides isA. uracil (U).B. adenine (A).C. guanine (G).D. cytosine (C). Which of the following is a characteristic of double-stranded DNA? 2 nanometer in width 10 basepairs per turn 0.34 nanometer per basepair All of the above RNA differs from DNA in all of the following ways except __________. Thymine A sugar molecule Different functions of RNA Vs DNA 5’ & 3’ orientation of polynucleotide strand DNA is made up of nucleotides consisting of a phosphate group, a nitrogenous base and A protein A sugar A molecule of ATP A fat 14.In the DNA molecule A. Adenine pairs with Thymine B. Guanine pairs with Thymine C. Cytosine pairs with Thymine D. Adenine pairs Cytosine 15. Which of the following DNA molecules is the most stable A CTGCATAC TACGTATG B GAAATTTC CTTTAAAG C AGTCGAAT TCAGCTTA D GCGTGCAC CGCACGTG 2