Ametabolically important difference between proteins and carbohydrates and fats is that: a. proteins contain carbon whereas carbohydrates and fats do not b. proteins contain a lot more energy per gram than both carbohydrates and fats c. proteins contain nitrogen whereas carbohydrates and fats do not d. proteins are made of smaller building blocks whereas carbohydrates and fats are not

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.

What organ is the first to receive nutrients that have been absorbed from the digestive tract?

All annelids and arthropods have a blank body plan . unlike annelids, arthropods also have blank . the circulatory system of annelids is blank , while circulatory system of arthropods is blank .