Oscar placed a beaker of water on a hot plate and recorded the temperature of the water for four minutes. he recorded his observations in the data table below.
time (s) temperature (°c) observations
0 24 no activity
30 35 no activity
60 57 some steam rising
90 81 more steam rising;
tiny bubbles forming
120 98 more steam rising;
more bubbles
150 100 boiling
180 100 boiling
210 100 boiling
240 100 boiling
based on oscar's observations, what is the most appropriate scientific question to ask?

Are salt and soap nutrients or toxins for yeast? explain.

Considering the yellow and green pea color phenotypes studied by gregor mendel: a. what is the biochemical function of the protein that is specified by the gene responsible for the pea color phenotype? (1 point) b. a null allele of a gene is an allele that does not specify (or encode) any of the biochemical function that the gene normally provides (in other words, either no protein at all or only non-functional protein is produced from it). of the two alleles, y and y, which is more likely to be a null allele? (1 point) c. in terms of the underlying biochemistry, why is the y allele dominant to the y allele? (2 points) d. why are peas that are yy homozygotes green? (1 point) e. the amount of protein produced from a gene is roughly proportional to the number of functional copies of the gene carried by a cell or individual. what do the phenotypes of yy homozygotes, yy heterozygotes, and yy homozygotes tell us about the amount of sgr enzyme needed to produce a yellow color? explain your reasoning. (2 points)

For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a.control b.hypothesis c.procedure d.system