Dr. trout has noticed that salmon in his fish hatchery seem to enjoy listening to the radio in his lab. the fish in the tank closest to the radio seem to grow larger. dr. trout decides that the more music he plays, the larger the fish must grow. to test his idea, he sets up 5 large ponds with 100 salmon in each pond. he places a loudspeaker at the middle of each pond and plays various amounts of music in each pond. he plays the same band, feeds the fish the same diet, and keeps water conditions in all tanks exactly the same. after 10 weeks, he ends the trial and takes the average mass of the fish in each pond.

what is the range of average fish mass in dr. trout's experiment?
a) 0.40
b) 1.30
c) 1.80
d) 8.84

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 words best matches this definition: the process in which the best adapted organisms survive and pass on their traits, while those that are not well adapted do not survive to pass on their traits. question 3 options: acquired selection natural selection artificial selection organic selection

Modern sea star larvae resemble some primitive vertebrate larvae. this similarity may suggest that primitive vertebrates