6. Membranes are essential to life processes. Which of the following best
defines a membrane?
A. Membranes are phospholipid bilayers.
B. Membranes are selectively permeable barriers.
C. Membranes are the sites of energy transformations.
D. Membranes are barriers that protect organelles from outside substances.

In iceland, the mid atlantic ridge runs through the center of the contry. what can you conclude about the apperence of iceland many thousands of years from now?

Plants that have reproductive structures called cones are?

Svetlana and her mother are very similar. both have blonde hair, a love of scrapbooking, blue eyes, and a thin nose. which statement  most likely  describes svetlana’s traits? svetlana inherited her love of scrapbooking from her mother, but her blue eyes come from her environment.svetlana inherited her blue eyes from her mother, but her love of scrapbooking comes from her environment.svetlana inherited her thin nose from her mother, but her blonde hair comes from her environment.svetlana inherited her blonde hair from her mother, but her thin nose comes from her environment.