Which of the following organelles uses carbon dioxide to produce sugars (glucose)? Answer Choices are
A: Vacuoles
B: Ribosomes
C: Chloroplasts
D: Mitochondria

Which of the following birds remained ancient looking in the miocene epoch? a. crows b. owls c. grouses d. none of the above

Maria wanted to grow a fern in her backyard. acting on a suggestion from a friend, she collected brown dots from the underside of a fern's leaves and then potted them. after a few days, maria saw small fern leaves erupting from the pot. which statement explains this phenomenon? a. the fern transitioned from gametophyte generation to sporophyte generation. b. the fern grew as a result of mitosis. c. the fern transitioned from sporophyte generation to gametophyte generation. d. the fern grew to be genetically identical to its parent plant.

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?