A cell membrane is said to be a bilayer. What forms the two layers? A) Phospholipid molecules that self-arrange tail-to-tail

B) Proteins and carbohydrates with electrons

C) Aquaporins and proteins with opposite charges

D) Phospholipid molecules that self-arrange head-to-head

Of seawater increases with decrease in the temperature. therefore, the cold water sinks to the deeper layers at the bottom

Aquaternary consumer species would be expected to have a smaller population than a secondary consumer species. select the best answer from the choices provided t f

Dna, in the nucleus carries the genetic code for making proteins in ribosomes. in the diagram, b, represents the proteins produced. dna cannot leave the nucleus to carry the genetic information to the ribosome where proteins are produced. how does the genetic code get from the nucleus to the ribosome? what does a represent? now