An organic molecules that is an importanat part of cell membranes is: : a. cellulose b. glycogen c. rna d. phospholipid

Look at the images of different rocks. which rocks have a fine-grained texture? check all that apply. 1 2 3 4 5

Describe the function of the endomembrane system? what organelles are involved?

The cretaceous period spanned the time interval between and 65 million years ago. 250 million 144 million 75 million 200 million