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

C. 
to transcribe mrna 

i hope i  

the glands which are associated with each description is given below:

pancreas - is an endocrine and exocrine gland that secretes juices with enzymes for digestion. salivary glands- with protection and digestion in the mouth. liver- secretes bile for digestion.   lachrymal glands - secrete tears to moisten eyes and protect them from particles and infection.   sweat gland -regulates water, salt, and temperature. oil glands - to form a protective barrier on the skin.   goblet cells - secrete mucus for protection.