Two scientists are both studying RNA. One scientist is studying RNA in mice and the other is studying RNA in E. coli bacteria. Which of the following best describes how each scientist would use a genetic code? A. Both scientists would use the same genetic code because all organisms have RNA.
B. Both scientists would use the same genetic code because in all organisms the code is read three bases at a time and in the same direction.
C. The scientist studying mice would use the genetic code for mice and the scientist studying E. coli would use the genetic code for E. coli because mice are more complex multicellular organisms.
D. The scientist studying mice would use the genetic code for eukaryotes and the scientist studying E. coli would use the genetic code for prokaryotes because they each have different types of chromosomes.

Match the descriptions / definitions with the term they best describe 1. three dimensional relationship of the different polypeptide chains in a multisubunit protein or protein complex 2. common folding pattern in proteins in which a linear sequence of amino acids folds into a right-handed coil stabilized by internal hydrogen-bonding between polypeptide backbone atoms. 3. the amino acid sequence of a protein 4. a region on the surface of a protein that can interact with another molecule through noncovalent bonding. 5. three-dimensional arrangement of alpha-helices and beta-sheets within a single polypeptide, typically stabilized by a variety of noncovalent bonds, including ionic and hydrogen bonds, and nonpolar interactions / hydrophobic force. 6. the chain of repeating carbon and nitrogen atoms, linked by peptide bonds, in a protein. 7. common structural motif in proteins in which different sections of the polypeptide chain run alongside each other and are joined together by hydrogen bonding between atoms of the polypeptide backbone. 8. portion of a polypeptide chain that has a discrete tertiary structure of its own and can often fold independently of the rest of the chain 9. regular local folding patterns in a protein, including alpha-helix and beta-sheet a. primary structure b. beta-sheet c. protein d. coiled-coil e. polypeptide backbone f. secondary structure g. side chain h. tertiary structure i. binding site j. alpha-helix k. quaternary structure l. protein domain

Which of the following is not considered an appendage of the skin? nails glands follicles none of the above

What is a limitation of using a chemical formula, such as c6h1206, to represent a compound? the chemical formula does not show the types of elements that make up the compound. the chemical formula does not show how the atoms are connected to one another the chemical formula does not show the number of atoms of each element in a molecule. the chemical formula does not show the chemical symbols of the elements in the compound