About how much of the universe is believed to consist of ordinary atoms that can be detected? 75% 20% 3%

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 equation is used to calculate the magnetic force on a charge moving in a magnetic field

The negative change found inside the plasma membrane is created by potassium ions sodium ions hydrogen ions chlorine ions