Phospholipids make up most of the lipid part of the cell membrane. since water exists on both the outside and inside of a cell, which of the following phospholipid arrangements makes the most sense?
a. a single layer of phospholipids with the polar heads facing outside the cell
b. two back-to-back phospholipid layers with the non-polar tails facing out on both sides
c. a single layer of phospholipids with the polar heads facing inside the cell
d. two back-to-back phospholipid layers with the polar heads facing out on both sides

What evidence is there that convection occurs in earth’s troposphere?

1. the passing of is the basis of heredity. 2. our encode the instructions that define our traits. 3. each of us has thousands of genes, which are made of and reside in our chromosomes. 4. in addition to our genes, the we live in also define our traits. 5. humans have two complete sets of chromosomes. 6. when parents conceive a child, each parent contributes set of chromosomes. 7. every child receives of its chromosomes from the mother and half from the father. 8. this transfer takes place at when the father’s sperm joins the mother’s egg. 9. while most cells in our bodies have two sets of chromosomes, or a total of egg and sperm each have chromosomes. 10. when egg and sperm unite they create a single cell called a 11. each parent contributes complete set of chromosomes to their child. 12. since the parents contribute the chromosomes to each new child, every child inherits a unique set of chromosomes. 13. as a result, every baby will have a combination of traits.

What is the most important nursing intervention for minority adolescents?