Which of the following is true of the DNA molecule? A. Vorm 'n dubbel heliks met twee komplimentêre stringe. / Forms a double helix of two complimentary strands B. Die suiker wat in die nukleotiede gevind word is ribose. / The sugar found in the nucleotides is ribose C. Nukleotiede sluit in adenien, guanien, sitosien en urasiel. / Nucleotides include adenine, guanine, cytosine, and uracil D. Al die bogenoemde. / All of the above

DNA and RNA molecules are similar in that they both contain (1) nucleotides (2) a double helix (3) deoxyribose sugars (4) thymine

Which of the following statements is incorrect regarding DNA and RNA?DNA is double stranded, and RNA is a single strand.They each contain a slightly different sugar molecule.One of the bases is different.All of the above are correct.

Which of the following statements about DNA is incorrect?ANSWERThe alternating sugars and phosphate molecules of the DNA backbone bond together via phosphodiester bonds.DNA is a long, single-stranded molecule that curves into a helix, and the set pairings of the bases ensure that there is always a purine across from another purine and a pyrimidine across from another pyrimidine.The nitrogen base adenine always pairs with thymine, and guanine always pairs with cytosine.DNA has an antiparallel arrangement.

Which of the following statements is false concerning RNA?ANSWERIn RNA, the nitrogen base thymine is replaced by uracil.Ribonucleotides found in RNA include the same sugar deoxyribose that is found in DNA.RNA is a single-stranded molecule.Cells make numerous types of RNA.

How many statement(s) is/are correct about nucleic acids.(i) Synthesis of nucleic acid is from 5' end to 3' end during replication or transcription.(ii)  DNA contains adenine, thymine, guanine and cytosine nitrogenous base and ribose pentose sugar.(iii) RNA contains adenine uracil, guanine and cytosine nitrogenous base and ribose pentose sugar.(iv) Secondary structure of DNA is double Helix structure which has hydrogen bonds.(v) RNA exist as single strand.(vi) r-RNA is the structural part of ribosome.(vii) α-helix and β-pleated sheet are secondary structure of DNA.