One feature of all dna molecules is that they are: a. single-stranded b. double-stranded c. triglycerides d. disaccharides

Which of the following statements about archaea and bacteria is true? a. neither is single-celled. b. they both have nuclear membranes. c. neither reproduces by binary fission. d. they both lack a nuclear membrane.

Explain how light energy is turned into chemical energy? ! due tomorrow!

Hairs that clean dirt out of the air in your nasal passages are called: a. sinus b. trachea c. cilia d. mucus