In order to explain dna's consistent width, watson and crick concluded that a. one nucleotide will stretch its bonds to meet the other. b. one strand must run opposite of the other. c. one single ring base will always bond with one double ring base.

At the complete end of cellular respiration, how many molecules of atp are produced?               a.  15    b.  26    c.  38    d.  34 

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.

What is true of sea slugs in these orders