Which of the following structural characteristics is not normally observed in a dna duplex?
(a) purine-pyrimidine pairs
(b) external sugar-phosphate backbone
(c) uniform left-handed twist
(d) antiparallel strands

Identify characteristics of energy from the sun. check all that apply. almost all of the energy on earth comes from the sun. energy from the sun is known as mechanical energy. the energy in fossil fuels originally came from the sun. plants convert the energy of sunlight into chemical energy.

Research question: why are the carrots that grew on the left side of the garden larger than the carrots that grew on the right side of the garden? which hypothesis is based on this research question? a comparison of people with gardens to people without gardens will show who is likely to live longer. b. carrots are thought to be good for your eyesight and should be eaten regularly. c. carrots that are provided lots of sunlight grow to a larger size than carrots grown in the shade. d. eating fresh vegetables every day is a healthy thing to do.

Consider the venn diagram of plant reproduction. where in this image, areas a - d, would you insert the picture of the orange lily?