What is the purpose of the spliceosome?

a.
to remove introns from pre-mrna
b.
to join together 2 exons
c.
to transcribe mrna
d.
a and b only are true
e.
a, b, and c are all true

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

the main thing i would use is bricks because if there is a hurricane, there is a great possibility for the house to still stand. and i would also use plexiglass windows instead of regular windows because plexiglass isn't prone to breaking.