synthesis/RNA/DNA

1.The basic differences between RNA and DNA are: a.The organic bases only b.Bases, ribose units, and the phosphodiester linkage c.Bases, ribose units, and the glycosidic bond type d.Bases and the ribose units only. 2.The solubility characteristics of the pyrimidine or purine bases and the corresponding nucleosides differ greatly. Which of the following statements is not true? a.purine bases are quite soluble in water. b.Nucleosides are much more soluble than the corresponding bases. c.Nucleosides and nucleotides are quite soluble in water. d.Ribose units are very soluble in water. 3.Adenosine and guanosine are found predominantly in which tautomeric forms, respectivel... click for more

rna/dna

16.Digestion of the oligonucleotide AGUACAA by pancreatic RNase A would result in which set of products? a.AGUp, ACp. M b.AGU, pAC. pM c.AGp. UAp, CM d.AG. pUA, pCCA 17.How is the radioactivity incorporated into the newly synthesized DNA using the chain termination protocol for sequencing DNA? a.The dideoxynucleotide triphosphate is labeled with 32P. b.One of the dNTPs is labeled with 32P. c.The primer strand is labeled with 32P. d.The template strand has been labeled beforehand with 32P. 18.Which of the following characteristics is associated with the B form of DNA? a.The sugars are located in the interior of the double helix. b.The distance between base pairs al... click for more

DNA/RNA - 24 Questions

16. What statement is incorrect about the different RNA molecules? a.tRNA contain numerous intramolecular hydrogen bonds between bases. b.There are more distinct tRNA molecules than there are rRNA molecules. c.rRNA are complexed to proteins in the ribosomes. d.The most abundant RNA molecule in the cell is mRNA. 17. Digestion of the oligonucleotide AGUACAA by pancreatic RNase A would result in which set of products? a.AGUp, ACp. M b.AGU, pAC. pM c.AGp. UAp, CM d.AG. pUA, pCCA How is the radioactivity incorporated into the newly synthesized DNA using the chain termination protocol for sequencing DNA? a.The dideoxynucleotide triphosphate is labeled with 32P. b.One of... click for more

Amino acids

Which statement is incorrect about the classification of amino acids? a. Alanine and valine are neutral, nonpolar amino acids. b. Lysine and arginine are basic amino acids. c. Tryptophan and phenylalanine are aromatic amino acids. d. Aspartic acid and aspargine are acidic amino acids. Which of the following amino acids is the least water soluble at pH 7.0? a. Tryptophan b. Glutamic acid c. Cysteine d. Histidine Which amino acid would migrate the furthest toward the anode (positive electrode) during paper electrophoresis at pH 7.0? a. Aspartic acid b. Alanine c. Lysin d. Glutamine Which of the following functional groups, attached to an inert matrix, could ... click for more

Cells/molecules

Which of the following characteristics is associated with the plasma membrane in an eukaryotic cell? a.Signal transduction b.Transport of glucose c.Cell-cell interactions d.All of the above Membrane lipids in a liquid bilyaer are held together primarily by: a.hydrophobic forces b.hydrogen bonds c.electrostatic forces d.covalent bonds The association of membrane proteins with lipids in the membrane bilayer primarily involves: a.Electrostatic interactions b.Hydrophobic interactions c.Covalent linkages d.Hydrogen bonding 4.Which lipid is least likely to be found in plasma membrane of erythrocytes? a.Triglyceride b.Shingomyelin c.Ganglioside d.Choles... click for more