Ascientist wants to test whether the ph, salinity, and temperature of seawater impacts coral development. he sets up an experiment with three conditions: aquarium 1: normal ph, normal salinity, normal temperature aquarium 2: high ph, high salinity, high temperature aquarium 3: low ph, low salinity, low temperature he finds that coral grow the least in aquarium 2. he concludes that coral does not grow well in conditions with high salt. why is this an invalid conclusion?   the experiment does not have a control group.   the experiment changes more than one variable at once.   the experiment does not have an experimental group.   the experiment does not measure any dependent variables.

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

How many chromosomes are in a gold fish?

Nucleic acid certain protein cell membranes certain carbohydrates