Sort the chemical reactions based on whether they absorb or release energy.
burning a candle
producing electrical current
baking bread
activating a cold pack
photosynthesis
you have to sort these into whether they absorb or release energy.

Dna has unique properties that allow it to accurately retain genetic information, even after multiple rounds of replication. one aspect of dna that allows it to accurately store genetic information is the base pairing from chargaff\'s first rule of the four nucleotide bases. if the c content of a dna molecule is 22%, what are the percentages of the remaining bases?

Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion

List five ways we are indebted to phytoplankton