Plss ! the models below represent nuclear reactions. the atoms on the left of the equal sign are present before the reaction, and the atoms on the right of the equal sign are produced after the reaction. model 1: atom 1 + atom 2 = atom 3 + energy model 2: atom 4 = atom 5 + atom 6 + energy which of these statements is most likely correct about the two models?

a. both models show reactions which produce energy in the sun.

b. both models show reactions which use up energy in the sun.

c. model 1 shows reactions in the nuclear power plants and model 2 shows reactions in the sun.

d. model 1 shows reactions in the sun and model 2 shows reactions in a nuclear power plant.

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

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)

Which list is in order from simplest to most complex? a bacteria - virus - plant - protist b protist - bacteria - virus - plant c virus - bacteria - plant - protist d virus - bacteria - protist - plant