(select all that apply.) choose from the following list the three groups of lipids. a. fatty acids b. steroids c. phospholipids d. amino acids e. proteins f. fats

Which of these is not a function of some membrane proteins ? a.allowing polar molecules to enter the cell b.recognizing other types of cells c.receiving messeges from other cells b.carrying messages to oher cells

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?

What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?