Which is a factor that determines whether a molecule can cross a cell
membrane?
o
a. speed
o b. mass
o
c. texture
o
d. polarity
subm

7. describe two strategies that parents can use to cope with stress. 8. describe the three types of childcare available to families. 9. what can parents do to be more involved in their children's education at home and at school? 10. which factors should a parent consider when choosing a childcare option?

What enzyme is most important for dna replication and why?

What happens when two nitrogen atoms share electrons